diagram of the blood coagulation and protein C pathways. In the blood coagulation pathway, thrombin ..., thrombin promotes platelet activation and aggregation via activation of protease activated receptors on the cell membrane of the platelet. Thrombin also cross over into the protein C pathway by converting ... PAR 1 and EPCR. Role of thrombin in the blood coagulation cascade Thrombin is a trypsin like ... cleaved to form thrombin in the coagulation The coagulation cascade coagulation cascade , which ultimately results in the stemming of blood loss. Thrombin in turn acts as a serine protease that converts ... doi 10.1007 BF01612263 ref Physiology Synthesis Thrombin is produced by the enzymatic cleavage of two ... level of antithrombin activity has been measured to be around 1.1 units mL. Newborn levels of thrombin ... coagulation pathway, thrombin acts to convert factor XI to XIa, factor VIII VIII to VIIIa ... bonds increase the stability of the fibrin clot. Thrombin Protein protein interaction interacts ... the thrombin thrombomodulin complex journal J. Biol. Chem. volume 271 issue 28 pages 16603 8 year ... journal author Jakubowski HV, Owen WG title Macromolecular specificity determinants on thrombin for fibrinogen ... July pmid 2544585 doi url issn ref As part of its activity in the coagulation cascade, thrombin ... membrane of the platelet. Negative feedback Thrombin bound to thrombomodulin activates protein ... the binding of thrombin to thrombomodulin , an integral membrane protein expressed by endothelial ... S leads to a modest increase in its activity. Thrombin is also inactivated by antithrombin ... from prothrombin fragment 1.2 to create the active enzyme thrombin, which has a molecular weight of 36,000 Da. Gene The Thrombin prothrombin gene is located on the eleventh chromosome 11p11 q12 ... G20210A mutation at 20210A . Thrombin, a potent vasoconstrictor and mitogen , is implicated ... clots around a cerebral artery , releasing thrombin. This can induce an acute and prolonged narrowing ... more details
url http www.clinchem.org cgi pmidlookup?view long&pmid 12507975 ref This test is also known as the Thrombin Clotting Time TCT . Thrombin time compares a patient s rate of clot formation to that of a sample of normal pooled plasma. Thrombin is added to the samples of plasma. If the plasma does ... is used instead of thrombin. Reptilase has a similar action to thrombin but unlike thrombin it is not inhibited by heparin. The thrombin time is used to diagnose bleeding disorders and to assess the effectiveness of fibrinolytic therapy. Reference values for thrombin time are 10 to 15 seconds ... and 20 seconds. Thrombin time can be prolonged by heparin, fibrin degradation products, factor XIII ..., the Thrombin Clotting Time is one of the most procedurally simple. After liberating the plasma from the whole blood by centrifugation , bovine Thrombin is added to the sample of plasma. The clot is formed ... of the thrombin and the clot formation is recorded as the thrombin clotting time Specimen Requirements ... blood. Reference Interval The reference interval of the Thrombin Clotting time is generally 22 ... EJ title Inhibitor of the thrombin time in systemic amyloidosis a common coagulation abnormality journal ... www.utmb.edu lsg labsurvivalguide hem thrombin time.htm Myeloid blood tests Category Blood tests ... more details
Unreferenced stub auto yes date December 2009 There are three known thrombin receptors termed PAR1 , PAR3 and PAR4 PAR for protease activated receptor . These receptors are members of the 7 transmembrane g protein coupled family of Receptor biochemistry receptor s, however, their method of activation is unique. Thrombin , a serine protease , binds to and cleaves the extracellular N terminal domain of the receptor. A tethered ligand biochemistry ligand corresponding to the new N terminus , SFLLRN, is then unmasked, binding to the second extracellular loop of the receptor and activating it. Transmembrane receptors G protein coupled receptors DEFAULTSORT Thrombin Receptor Category G protein coupled receptors Biochem stub ... more details
AutoAbBox Autoantigen Thrombin OneIsoform Yes OneIsoformSpecialName coagulation br factor II OneGene F2 OneOrgan Cardiovascular OneTissue serum OneCell blood platelets OneAlso serum protein inhibitor OneDisease lupus erythematosus Systemic lupus erythematosus OneIgClass OneIgGSubclass OneHLA1 OneHLA2 OneHLA3 OneAssociatedGene OneTCellRestr OneTrigger Anti thrombin antibodies are autoantibodies directed against thrombin that may constitute a fraction of lupus anticoagulant and are seen an increased levels in lupus erythematosus systemic lupus erythematosus . Image 2c93.png thumb 127px left crystal structure of thrombin . In mammals, there is normally occurring anti thrombin activity antithrombin III , which can be distinguished from autoimmune anti thrombin. Anti thrombin antibodies can react with both types of thrombin in the antithrombin thrombin complex. ref name pmid6787123 cite journal ... between thrombin and antithrombin III journal J. Immunol. volume 127 issue 1 pages 239 44 year 1981 pmid 6787123 doi ref Antibodies IgG against thrombin can strongly inhibit its activity. ref name ... 655 64 year 1982 pmid 7066212 doi 10.1111 j.1365 2141.1982.tb01966.x ref Inhibitory anti thrombin ... LR, Pepper DS, Prowse CV title Monoclonal antibodies directed against human alpha thrombin and the thrombin ... pmid 6523447 doi 10.1016 0049 3848 84 90296 2 ref Autoimmune anti thrombin was also found to inhibit the binding of antithrombin III to thrombin. ref name pmid4076847 cite journal author Barthels M, Heimburger N title Acquired thrombin inhibitor in a patient with liver cirrhosis journal Haemostasis ..., that despite autoimmune anti thrombinthrombin inhibitory activity, these antibodies correlate with thrombotic ... antibodies to thrombin, antibodies to vascular heparin sulfate appear to interfere with antithrombin thrombin interaction. ref name pmid8299226 cite journal author Shibata S, Sasaki T, Harpel P, Fillit ... with endothelial cells and inhibit the formation of thrombin antithrombin III complexes journal ... more details
Direct thrombin inhibitors DTIs are a class of medication that act as anticoagulant s delaying coagulation blood clotting by directly inhibiting the enzyme thrombin . Some are in clinical use, while others are undergoing clinical development. Several members of the class are expected to replace heparin and derivatives and warfarin in various clinical scenarios. Types There are two types of DTIs, dependent on their interaction with the thrombin molecule. Bivalent DTIs hirudin and analogs bind both to the active site and exosite 1, while univalent DTIs bind only to the active site. ref name DiNisio cite journal author Di Nisio M, Middeldorp S, B ller H title Direct thrombin inhibitors. journal N Engl J Med volume 353 issue 10 pages 1028 40 year 2005 pmid 16148288 doi 10.1056 NEJMra044440 ref Bivalent Hirudin and derivatives were originally discovered in Hirudo medicinalis Hirudin Bivalirudin transient inhibition is cleaved by thrombin Lepirudin Desirudin Univalent Univalent DTIs include Argatroban Melagatran and its prodrug ximelagatran Dabigatran Uses Bivalent DTIs enjoy limited use in circumstances where heparin would be indicated such as the acute coronary syndrome unstable angina , but cannot be used. As they are administered by injection intravenous , intramuscular or subcutaneous , they are less suitable for long term treatment. ref name DiNisio Argatroban as well as the hirudins are used for heparin induced thrombocytopenia , a rare but serious complication of heparin treatment that requires anticoagulation as it increases both arterial and venous thrombosis risk but not with the putative agent, heparin. ref name DiNisio Ximelagatran showed good efficacy compared with warfarin in several trials in prevention and treatment of deep vein thrombosis and as thromboprophylaxis in atrial fibrillation . ref name DiNisio Development was stopped by manufacturer AstraZeneca ... test. ref name DiNisio References references Antithrombotics Category Direct thrombin inhibitors ... more details
Reptilase time RT is a blood test used to detect deficiency or abnormalities in fibrinogen , ref name pmid12162688 cite journal author Van Cott EM, Smith EY, Galanakis DK title Elevated fibrinogen in an acute phase reaction prolongs the reptilase time but typically not the thrombin time journal Am. J. Clin. Pathol. volume 118 issue 2 pages 263 8 year 2002 month August pmid 12162688 doi 10.1309 WUB3 72JT E50M EU8J url http ajcp.metapress.com openurl.asp?genre article&issn 0002 9173&volume 118&issue 2&spage 263 ref ref name pmid200301 cite journal author Johnson PJ, White Y, Woolf IL, Williams R title Reptilase time in cirrhosis and hepatocellular carcinoma journal Br Med J volume 2 issue 6091 pages 869 70 year 1977 month October pmid 200301 pmc 1631704 doi 10.1136 bmj.2.6091.869 a url ref especially in cases of heparin contamination. Reptilase , an enzyme found in the venom of Bothrops Bothrops snakes , has activity similar to thrombin . Unlike thrombin, reptilase is resistant to inhibition by antithrombin III . Thus, the reptilase time is not prolonged in blood samples containing heparin, hirudin , or direct thrombin inhibitor s, whereas the thrombin time will be prolonged in these samples. Reptilase also differs from thrombin by releasing fibrinopeptide A, but not fibrinopeptide B, in its cleavage of fibrin . Other causes of prolonged reptilase time include the presence of fibrin degradation products , which interfere with fibrin polymerization. References reflist Myeloid blood tests Category Blood tests med stub fr temps de reptilase ... more details
Image Hirudin in complex with thrombin.png thumb 250px Structure of Hirudin in complex with Thrombin . ref PDB 4HTC ref Infobox protein family Symbol Hirudin Name Hirudin image PDB 1dwc EBI.jpg width caption crystallographic analysis at 3.0 angstroms resolution of the binding to human thrombin of four active site directed inhibitors Pfam PF00713 Pfam clan InterPro IPR000429 SMART PROSITE MEROPS SCOP 4htc TCDB OPM family OPM protein CAZy CDD Hirudin is a naturally occurring peptide in the salivary gland s of medicinal leech es such as Hirudo medicinalis that has a blood anticoagulant property. This is fundamental ... acid residue s 1 3 form a parallel beta strand with residues 214 217 of thrombin , the nitrogen atom ... terminal domain makes numerous electrostatic interactions with an anion binding exosite of thrombin ... thrombin journal Science volume 249 issue 4966 pages 277 80 year 1990 month July pmid 2374926 doi ... A. et al. title Refined structure of the Hirudin Thrombin complex journal J. Mol. Biol. year 1991 volume ... protease enzyme thrombin . ref cite journal author Fenton JW 2nd, Ofosu SA et al. title Thrombin and antithrombotics journal Semin Thromb Hemost year 1998 volume 24 pages 87 91 issue 2 pmid 9579630 doi 10.1055 s 2007 995828 ref Thrombin is produced from prothrombin , by the action of an enzyme ... to form a blood clot . The principal Enzyme inhibitor inhibitor of thrombin in normal blood circulation ... of hirudin is based on its ability to inhibit the procoagulant activity of thrombin . Hirudin is the most potent natural inhibitor of thrombin. Unlike antithrombin III, hirudin binds to and inhibits only the activity of thrombin, with a specific activity on fibrinogen. ref name Rydell Therefore, hirudin ... serum protein s, and can also act on protein complex complexed thrombin. It is difficult to extract ... other direct thrombin inhibitor s are derived chemically from hirudin. See also Hirudotherapy ...,Malaysia Leeches Hirudinaria Manillensis Antithrombotics Category Direct thrombin inhibitors Category ... more details
PBB geneid 2149 Proteinase activated receptor 1 PAR1 also known as the coagulation factor II thrombin receptor is a protein that in humans is encoded by the F2R gene . ref name pmid8395910 cite journal ... thrombin receptor gene localization to region q13 of chromosome 5 journal Blood volume 82 issue ... of the receptor. ref name entrez cite web title Entrez Gene F2R coagulation factor II thrombin ... author Coughlin SR, Vu TK, Hung DT, Wheaton VI title Characterization of a functional thrombin ..., Laurent GJ, Chambers RC title Role of thrombin and its major cellular receptor, protease activated ... pmid 12023853 cite journal author Tellez C, Bar Eli M title Role and regulation of the thrombin ... VI, Coughlin SR title Molecular cloning of a functional thrombin receptor reveals a novel proteolytic ..., et al. title Solid tumor cells express functional tethered ligand thrombin receptor journal Cancer ..., Coughlin SR, Kobilka BK title Intracellular targeting and trafficking of thrombin receptors. A novel ... V, et al. title Crystallographic structures of thrombin complexed with thrombin receptor peptides ... K, Schultz G title G proteins of the G12 family are activated via thromboxane A2 and thrombin receptors ... Response of blood leukocytes to thrombin receptor peptides journal J. Leukoc. Biol. volume 54 issue ... Genomic cloning and characterization of the human thrombin receptor gene. Structural similarity to the proteinase .... title Cloning and identification of regulatory sequences of the human thrombin receptor gene journal ... cite journal author Shapiro MJ, Trejo J, Zeng D, Coughlin SR title Role of the thrombin receptor ... K, Shimizu N title Direct evidence for two distinct G proteins coupling with thrombin receptors in human ... al. title Thrombin receptors on human platelets. Initial localization and subsequent redistribution ... Specific inhibition of thrombin induced cell activation by the neutrophil proteinases elastase, cathepsin G, and proteinase 3 evidence for distinct cleavage sites within the aminoterminal domain of the thrombin ... more details
chembox UNII Ref fdacite correct FDA UNII 428409I84L ImageFile Inogatran.tif Width 400px ImageSize ImageAlt IUPACName 2 2R 1 2S 2 4 carbamimidamidobutyl carbamoyl piperidin 1 yl 3 cyclohexyl 1 oxopropan 2 yl amino acetic acid OtherNames Inogatran Section1 Chembox Identifiers CASNo PubChem ChEMBL 114715 SMILES NC N NCCCCNC O C H 1CCCCN1C O C H CC1CCCCC1 NCC O O Section2 Chembox Properties Formula C21 H38 N6 O4 MolarMass 438.6 g mol Appearance Density MeltingPt BoilingPt Solubility Section3 Chembox Hazards MainHazards FlashPt Autoignition Inogatran is a low molecular weight peptidomimetric thrombin inhibitor. Inogatran was developed for the potential treatment of arterial and venous thrombosis thrombotic diseases ref Cite journal pmid volume 85 issue 2 pages 133 145 last Teger Nilsson first Ann Catrine coauthors Ruth Bylund, David Gustafsson, Erika Gyzander and Ulf Eriksson title IN VITRO EFFECTS OF INOGATRAN, A SELECTIVE LOW MOLECULAR WEIGHT THROMBIN INHIBITOR journal Thrombosis Research year 1997 ref References reflist Category Direct thrombin inhibitors ... more details
The dysfibrinogenemias are a group of Dominance genetics autosomal dominant disorders of qualitatively abnormal fibrinogen s. ref http emedicine.medscape.com article 199723 overview ref There are more than 350 different fibrinogen abnormalities, each named after the place where it was discovered. ref cite book author McDonagh, J chapter Dysfibrinogenemia and other disorders of fibrinogen structure or function editor Colman R, Hirsh J, Marder V, Clowes A, George J title Hemostasis and Thrombosis edition 4th location Philadelphia, PA publisher Lippincott Williams & Wilkins year 2001 pages 855 892 ref Each dysfibrinogenemia is associated with slightly different effects on the thrombin time and on normal clotting. Some dysfibrinogenemias cause abnormal bleeding or even thrombosis , while others have no effect on either bleeding or thrombosis. ref cite journal url http www.archivesofpathology.org doi full 10.1043 0003 9985 282002 29126 3C1387 3ADAT 3E2.0.CO 3B2 journal Archives of Pathology & Laboratory Medicine title Dysfibrinogenemia and Thrombosis volume 126 issue 11 year 2002 pages 1387 1390 author Hayes T pmid 12421146 doi 10.1043 0003 9985 2002 126 1387 DAT 2.0.CO 2 ref Some examples are Amsterdam is a major defect, characterized by aggregation of fibrin monomer s, prolonged thrombin time, and an inhibitory effect on normal clotting but it is asymptomatic. Detroit is a major defect, there is fibrinopeptide release, the thrombin time is prolonged, there is an inhibitory effect on normal clotting and there is abnormal bleeding. Wiesbaden is a major defect, there is aggregation of fibrin monomers, the thrombin time is prolonged, there is an inhibitory effect on normal clotting and there is both bleeding and thrombosis. References reflist Diseases of RBCs and megakaryocytes Category Coagulopathies Category Autosomal dominant disorders Category Rare diseases disease stub ... more details
unreferenced date December 2011 A coagulation screen is a combination of Screening medicine screening laboratory tests , designed to provide rapid non specific information, which allows an initial broad categorization of haemostatic problems. The basic screen consists of platelet count bleeding time for platelet function PR prothrombin ratio for extrinsic pathway aPTT Activated Partial Thromboplastin time for the intrinsic pathway Thrombin clotting time TCT or fibrinogen assay for final common pathway Two other tests are regularly performed at the same time blood count , to detect other hematological abnormalities liver function tests to exclude liver disease as a cause of coagulation factor deficiency These tests may miss mild abnormalities but they will detect major disorders. The results of these screening tests, in conjunction with the clinical history especially bleeding history , will then direct the selection of further, more detailed and specific coagulation tests, such as specific factor assays, like fibrin degradation product s, D dimer , thrombin time , platelet aggregation , or specific factor inhibitor assays, like Protein C , TFPI , Antithrombin etc. Category Blood tests ... more details
PBB geneid 9002 Protease activated receptor 4 PAR4 , previously known as Coagulation factor II thrombin receptor like 3 , is a protein encoded by the gene F2RL3 gene in humans. ref name entrez cite web title Entrez Gene F2RL3 coagulation factor II thrombin receptor like 3 url http www.ncbi.nlm.nih.gov sites entrez?Db gene&Cmd ShowDetailView&TermToSearch 9002 accessdate ref The PBB Summary template is automatically maintained by Protein Box Bot. See Template PBB Controls to Stop updates. PBB Summary section title summary text Coagulation factor II thrombin receptor like 3 F2RL3 is a member of the large family of 7 transmembrane region receptors that couple to guanosine nucleotide binding proteins. F2RL3 is also a member of the protease activated receptor family. F2RL3 is activated by proteolytic cleavage of its extracellular amino terminus. The new amino terminus functions as a tethered ligand and activates the receptor. F2RL3 is activated by thrombin and trypsin. ref name entrez cite web title Entrez Gene F2RL3 coagulation factor II thrombin receptor like 3 url http www.ncbi.nlm.nih.gov ... pnas.95.12.6642 pmc 22580 cite journal author Kahn ML, Zheng YW, Huang W, et al. title A dual thrombin ... receptors 1 and 4 mediate activation of human platelets by thrombin. journal J. Clin. Invest ... mediator of thrombin stimulated platelet procoagulant activity. journal Proc. Natl. Acad. Sci ..., Sulciner DJ, et al. title PAR3 is a cofactor for PAR4 activation by thrombin. journal Nature volume ... cite journal author Covic L, Singh C, Smith H, Kuliopulos A title Role of the PAR4 thrombin receptor ... author Owen WG title PAR 3 is a low affinity substrate, high affinity effector of thrombin. journal ... S0006 291X 03 00732 0 cite journal author Adam F, Verbeuren TJ, Fauch re JL, et al. title Thrombin ... Wu CC, Hwang TL, Liao CH, et al. title The role of PAR4 in thrombin induced thromboxane production ... motif for thrombin recognition and cleavage. journal Biochem. J. volume 376 issue Pt 3 pages 733 ... more details
proteases that function in a way very similar to thrombin. Like thrombin, these proteases are capable .... Structural Comparison to Thrombin Cerastocytin, like most other serine proteases, ref Nelson, D ... . ref thrombin specifically, has three distinguishing features the hydrophobic pocket, the positive ..., closely mimics the activity of thrombin at 1nM. ref Dekhil et al. 2003 Molecular Cloning and Expression ... region of alpha thrombin. Despite these functional and structural similarities, cerastocytin ... pocket when combined with the 90 loop Phe90 Val99 . The peptides that serve this purpose in thrombin ... from that of thrombin, however, the 3 D structure and functionality remain the same. In cerastocytin ... cerastes Viper. Biochemistry 42 10609 10618. ref Similarly in thrombin four Arg, one Lys, one His ... this exosite was shown to be involved in the platelet aggregating activity of thrombin, a similar ... Cys42 Cys58 forms part of the fibrinogen recognition subsite S that is recognized as crucial for thrombin ... in the thrombin facilitated fibrinogenolysis. However, the lack of a Cys, and therefore disulfide ... site is not the same as that of thrombin. This is cinfirmed by the fact that cerastotin was still active after a thrombin desensitization test and was not affected by the competitive inhibitors of thrombin ... The effects of various inhibitors are not always consistent for thrombin and cerastocytin. Just as with thrombin, cerastocytin activated platelet aggregation is inhibited by chlorpromazine, theophylline ... mediated clot formation even though both have been observed to inhibit thrombin fascilitated platelet ..., some antibodies such as LJIblO that have been observed to inhibit thrombin, interfered with cerastocytin ... more details
Infobox protein family Symbol Haemadin Name Haemadin image PDB 1e0f EBI.jpg width caption crystal structure of the human alpha thrombin haemadin complex an exosite ii binding inhibitor Pfam PF09065 Pfam clan InterPro IPR015150 SMART PROSITE MEROPS SCOP 1e0f TCDB OPM family OPM protein CAZy CDD In molecular biology, haemadin is an anticoagulant peptide synthesised by the Indian leech , Haemadipsa sylvestris . It adopts a secondary structure consisting of five short Beta strand beta strands beta1 beta5 , which are arranged in two Antiparallel biochemistry antiparallel distorted beta sheet sheets formed by strands beta1 beta4 beta5 and beta2 beta3 facing each other. This beta sandwich is stabilised by six enclosed cysteine s arranged in a 1 2, 3 5, 4 6 Disulphide bond disulphide pairing resulting in a disulphide rich hydrophobic core that is largely inaccessible to bulk solvent . The close proximity of disulphide Chemical bond bond s 3 5 and 4 6 organises haemadin into four distinct loop biochemistry loops . The N terminal segment of this protein domain domain binds to the active site of thrombin , inhibiting it. ref name pmid11060016 cite journal author Richardson JL, Kroger B, Hoeffken W, Sadler JE, Pereira P, Huber R, Bode W, Fuentes Prior P title Crystal structure of the human alpha thrombin haemadin complex an exosite II binding inhibitor journal EMBO J. volume 19 issue 21 pages 5650 60 year 2000 month November pmid 11060016 pmc 305786 doi 10.1093 emboj 19.21.5650 url ref References reflist InterPro content IPR015150 Category Protein domains ... more details
italic title Taxobox name Millettia nitida image image width 250px image caption regnum Plantae unranked divisio Angiosperms unranked classis Eudicots unranked ordo Rosids ordo Fabales familia Fabaceae subfamilia Faboideae tribus Millettieae genus Millettia species M. nitida binomial Millettia nitida binomial authority George Bentham Benth. br London Journal of Botany. London 1 484. 1842 subdivision ranks Subspecies subdivision Millettia nitita var. hirsutissima ref name Zhang Interactions between thrombin and natural products of Millettia nitita var. hirsutissima using capillary zone electrophoresis. Shuyu Zhang, Jun Cheng, Wenjing Chen, Xiaomei Ling, Yuying Zhao, Jie Feng, Cheng Xiang and Hong Liang, Journal of Chromatography B, Volume 877, Issue 32, 15 December 2009, pages 4107 4114, doi 10.1016 j.jchromb.2009.10.033 ref synonyms Millettia nitida is a legume species in the genus Millettia . M. nitida produces a number of compounds among whom genistein 8 C D apiofuranosyl 1 6 O D glucopyranoside, calycosin , isoliquiritigenin , formononetin , gliricidin , 8 O methylretusin , dihydrokaempferol , biochanin , afromosin and hirsutissimiside F interact with thrombin , while sphaerobioside , formononetin 7 O D apiofuranosyl 1 6 O d glucopyranoside, genistein 5 methylether 7 O L rhamnopyranosyl 1 6 O D glucopyranoside, retusin isoflavone retusin 7,8 O D diglucopyranoside, symplocoside , ononin , genistin , afromosin 7 O D glucopyranoside, lanceolarin , liquiritigenin , 7,2 dihydroxy,4 methoxyiso avan and sphaerobioside have no binding to thrombin. ref name Zhang References references External links wikispecies commons Category Millettia nitida Category Plants described in 1842 Faboideae stub ... more details
protein Name coagulation factor II receptor coagulation factor II thrombin receptor caption image width HGNCid 3537 Symbol F2R AltSymbols PAR1 EntrezGene 2149 OMIM 187930 RefSeq NM 001992 UniProt P25116 PDB ECnumber Chromosome 5 Arm q Band 13 LocusSupplementaryData protein Name F2RL1 coagulation factor II thrombin receptor like 1 caption image width HGNCid 3538 Symbol F2RL1 AltSymbols PAR2, GPR11 EntrezGene 2150 OMIM 600933 RefSeq NM 005242 UniProt P55085 PDB ECnumber Chromosome 5 Arm q Band 13 LocusSupplementaryData protein Name F2RL2 coagulation factor II thrombin receptor like 2 caption image width HGNCid 3539 Symbol F2RL2 AltSymbols PAR3 EntrezGene 2151 OMIM 601919 RefSeq NM 004101 UniProt O00254 PDB ECnumber Chromosome 5 Arm q Band 13 LocusSupplementaryData protein Name F2RL3 coagulation factor II thrombin receptor like 3 caption image width HGNCid 3540 Symbol F2RL3 AltSymbols PAR4 EntrezGene 9002 OMIM 602779 RefSeq NM 003950 UniProt Q96RI0 PDB ECnumber Chromosome 19 Arm p Band 12 LocusSupplementaryData Protease activated receptor s are a subfamily of related G protein coupled receptor s that are activated by cleavage of part of their extracellular domain. They are highly expressed in platelet s, but also on endothelial cells, myocytes and neurons. ref name Macfarlane 2001 cite journal author Macfarlane SR, Seatter MJ, Kanke T, Hunter GD, Plevin R title Proteinase activated receptors journal Pharmacol Rev volume 53 issue 2 pages 245 82 year 2001 doi pmid 11356985 url http pharmrev.aspetjournals.org cgi content abstract 53 2 245 format abstract ref Classification There are 4 ... the body. Activation PARs are activated by the action of serine protease s such as thrombin acts on PARs ... and Gq protein q calcium signalling to cause cellular actions. Function The cellular effects of thrombin are mediated by protease activated receptors PARs . Thrombin signalling in platelet s contributes ..., Rodr guez C, Gentile M, Calvayrac O, Badimon L title Thrombin and protease activated receptors PARs ... more details
Unreferenced stub auto yes date December 2009 An exoenzyme , or extracellular enzyme , is an enzyme that is secreted by a cell biology cell and that works extracellular outside of that cell . It is usually used for breaking up large molecules that would not be able to enter the cell otherwise. This term is also often used to refer to the hydrolytic digestive enzymes secreted by fungi. Examples of extracellular enzymes Amylase Angiotensin converting enzyme ACE generation of angiotensin II Lipoprotein lipase release of lipids from circulating lipoproteins Digestive enzymes breakdown of ingested nutrients Some clotting factors e.g. thrombin See also Endoenzyme Category Enzymes Enzyme stub ar de Exoenzym fr Exoenzyme pl Egzoenzymy ... more details
DTI may refer to Debt to income ratio Deep trench isolation Defense Technology Institute , the Thai defense technology public organisation Department of Trade and Industry disambiguation Department of Trade and Industry , a government department in several countries Detroit, Toledo and Ironton Railroad Dial test indicator Diffusion tensor imaging Direct thrombin inhibitor Diversified Technology, Inc. diesel turbo injection , on some older Opel models, predecessor of CDTi direct tension indicator disambig de DTI fr DTI ko DTI ja DTI ... more details
Unreferenced date July 2007 Blood spinning is a method used by sportsperson athletes to shorten the time to Healing heal an injury . Small samples of the athlete s blood are spun in a centrifuge to increase the concentration of growth hormone s. Calcium and the enzyme thrombin are added, forming a gel that is high in natural growth hormones. The sample is then injected into the wound , which can then heal as much as five times faster. Using this procedure can fall foul of the World Anti Doping Agency WADA due to possible non natural elements introduced into the athlete s body. A notable case where this procedure was used is that of NFL player Hines Ward . Following this there have been calls to legalize the procedure as scientists argue that it does not improve performance, only recovery time. Category Blood Category Doping treatment stub ... more details
Orphan date February 2009 TachoSil is a collagen sponge coated with the human coagulation factors fibrinogen and thrombin . It is used during surgery to stop local bleeding on internal Organ anatomy organ s hemostasis . The sponge is manufactured from horse tendons. TachoSil reacts upon contact with blood, other body fluids or saline to form a clot that glues it to the tissue surface. Hemostasis is reached in a few minutes, and the sponge is absorbed by the body within several weeks. Some patients experience hypersensitivity or allergic reactions. In rare cases, it could turn into severe hypersensitive reaction. Those who are prone to having a systemic reaction to horse proteins or human blood products are not good candidates for use of TachoSil. External links http www.tachosil.com TachoSil website treatment stub Category Surgery ... more details
by proteolysis at residue Arg92 by the thrombin thrombomodulin complex, CPB2 exhibits carboxypeptidase ... of two thrombin activatable fibrinolysis inhibitor isoforms journal Thromb. Haemost ... encoding human TAFI thrombin activable fibrinolysis inhibitor plasma procarboxypeptidase ... by thrombin and acts on carboxypeptidase B substrates. After thrombin activation, the mature protein ... reading citations cite journal author Bouma BN, Mosnier LO title Thrombin activatable fibrinolysis ... and fibrinolytic cascades through the thrombin thrombomodulin complex journal J. Biol. Chem ... PE, et al. title Inactivation of active thrombin activable fibrinolysis inhibitor takes place by a process ... LO, Meijers JC, Bouma BN title The role of protein S in the activation of thrombin activatable fibrinolysis ... JC title Protein C inhibitor regulates the thrombin thrombomodulin complex in the up and down regulation ... of thrombin activable fibrinolysis inhibitor TAFI do not determine the thrombomodulin dependence ... Association of a single nucleotide polymorphism in CPB2 encoding the thrombin activable fibrinolysis ... al. title Association between plasma thrombin activatable fibrinolysis inhibitor levels and activated ... M title Thrombin activatable fibrinolysis inhibitor antigen and TAFI activity in patients with APC ... citations no DEFAULTSORT Thrombin Activatable Fibrinolysis Inhibitor Category Fibrinolytic system ... more details
An exosite is a secondary binding site, remote from the active site, on an enzyme or other protein . ref http www.ingentaconnect.com content bsc jth 2007 00000005 00000010 art00013 IngentaConnect Manipulation of thrombin exosite I, by ligand directed covalent m Bot generated title ref This is similar to allosteric sites, but differs in the fact that, in order for an enzyme to be active, its exosite typically must be occupied. ref http www.blackwellpublishing.com isth2003 abstract.asp?id 9231 Congress of the International Society on Thrombosis and Haemostasis Bot generated title ref Exosites have recently become a hot topic in biomedical research as potential drug targets. citation needed date April 2011 References reflist External links http bloodjournal.hematologylibrary.org cgi reprint 84 6 1843.pdf Category Enzymes Category Catalysis biology stub ... more details
protein domain domains . Function Thrombomodulin functions as a Cofactor biochemistry cofactor in the thrombin ... complex with thrombin. This raises the speed of protein C activation thousandfold. Thrombomodulin bound thrombin has no procoagulant effect. The TT complex also inhibits fibrinolysis by cleaving thrombin activatable fibrinolysis inhibitor TAFI into its active form. The antigen described as BDCA ..., thrombomodulin has at least one other ligand biochemistry ligand apart from thrombin ... Thrombomodulin has been shown to Protein protein interaction interact with thrombin . ref name ... and fibrinolytic cascades through the thrombin thrombomodulin complex journal J. Biol. Chem ... specificity determinants on thrombin for fibrinogen and thrombomodulin journal J. Biol ... cite journal author Jakubowski HV, Owen WG title Macromolecular specificity determinants on thrombin ... K, Kusumoto H, Deyashiki Y, et al. title Structure and expression of human thrombomodulin, a thrombin ..., a cofactor for thrombin catalyzed activation of protein C. journal J. Biochem. volume 103 issue ... author Srinivasan J, Hu S, Hrabal R, et al. title Thrombin bound structure of an EGF subdomain ... more details
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