<text>to colour the structure by Evolutionary Conservation</text>
<text>to colour the structure by Evolutionary Conservation</text>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1qfk ConSurf].
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Revision as of 02:29, 10 February 2016
STRUCTURE OF HUMAN FACTOR VIIA AND ITS IMPLICATIONS FOR THE TRIGGERING OF BLOOD COAGULATION
1qfk is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[FA7_HUMAN] Defects in F7 are the cause of factor VII deficiency (FA7D) [MIM:227500]. A hemorrhagic disease with variable presentation. The clinical picture can be very severe, with the early occurrence of intracerebral hemorrhages or repeated hemarthroses, or, in contrast, moderate with cutaneous-mucosal hemorrhages (epistaxis, menorrhagia) or hemorrhages provoked by a surgical intervention. Finally, numerous subjects are completely asymptomatic despite very low factor VII levels.[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]
Function
[FA7_HUMAN] Initiates the extrinsic pathway of blood coagulation. Serine protease that circulates in the blood in a zymogen form. Factor VII is converted to factor VIIa by factor Xa, factor XIIa, factor IXa, or thrombin by minor proteolysis. In the presence of tissue factor and calcium ions, factor VIIa then converts factor X to factor Xa by limited proteolysis. Factor VIIa will also convert factor IX to factor IXa in the presence of tissue factor and calcium.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Factor VIIa (EC 3.4.21.21) is a trypsin-like serine protease that plays a key role in the blood coagulation cascade. On injury, factor VIIa forms a complex with its allosteric regulator, tissue factor, and initiates blood clotting. Although the structure of the binary complex has already been determined [Banner, D. W., D'Arcy, A., Chene, C., Winkler, F. K., Guha, A., Konigsberg, W. H., Nemerson, Y. & Kirchhofer, D. (1996) Nature (London) 380, 41-46], the conformational effects of cofactor binding to factor VIIa are not known in detail because of a lack of structural information on free factor VIIa. Here we report the structure of gamma-carboxyglutamic acid-domainless human coagulation factor VIIa at a resolution of 2.8 A. The molecule adopts an extended conformation within the crystal similar to that previously observed for the full-length protein in complex with tissue factor. Detailed comparison of free and tissue factor-bound factor VIIa reveals several structural differences. The binding mode of the active-site inhibitor D-Phe-Phe-Arg methyl ketone differs in the two structures, suggesting a role for the cofactor in substrate recognition. More importantly, a surface-exposed alpha-helix in the protease domain (residues 307-312), which is located at the cofactor recognition site, is distorted in the free form of factor VIIa. This subtle structural difference sheds light on the mechanism of the dramatic tissue factor-induced enhancement of factor VIIa activity.
Structure of human factor VIIa and its implications for the triggering of blood coagulation.,Pike AC, Brzozowski AM, Roberts SM, Olsen OH, Persson E Proc Natl Acad Sci U S A. 1999 Aug 3;96(16):8925-30. PMID:10430872[25]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑Bernardi F, Liney DL, Patracchini P, Gemmati D, Legnani C, Arcieri P, Pinotti M, Redaelli R, Ballerini G, Pemberton S, et al.. Molecular defects in CRM+ factor VII deficiencies: modelling of missense mutations in the catalytic domain of FVII. Br J Haematol. 1994 Mar;86(3):610-8. PMID:8043443
↑O'Brien DP, Gale KM, Anderson JS, McVey JH, Miller GJ, Meade TW, Tuddenham EG. Purification and characterization of factor VII 304-Gln: a variant molecule with reduced activity isolated from a clinically unaffected male. Blood. 1991 Jul 1;78(1):132-40. PMID:2070047
↑Marchetti G, Patracchini P, Gemmati D, DeRosa V, Pinotti M, Rodorigo G, Casonato A, Girolami A, Bernardi F. Detection of two missense mutations and characterization of a repeat polymorphism in the factor VII gene (F7). Hum Genet. 1992 Jul;89(5):497-502. PMID:1634227
↑Marchetti G, Ferrati M, Patracchini P, Redaelli R, Bernardi F. A missense mutation (178Cys-->Tyr) and two neutral dimorphisms (115His and 333Ser) in the human coagulation factor VII gene. Hum Mol Genet. 1993 Jul;2(7):1055-6. PMID:8364544
↑Chaing S, Clarke B, Sridhara S, Chu K, Friedman P, VanDusen W, Roberts HR, Blajchman M, Monroe DM, High KA. Severe factor VII deficiency caused by mutations abolishing the cleavage site for activation and altering binding to tissue factor. Blood. 1994 Jun 15;83(12):3524-35. PMID:8204879
↑Bernardi F, Castaman G, Redaelli R, Pinotti M, Lunghi B, Rodeghiero F, Marchetti G. Topologically equivalent mutations causing dysfunctional coagulation factors VII (294Ala-->Val) and X (334Ser-->Pro). Hum Mol Genet. 1994 Jul;3(7):1175-7. PMID:7981691
↑Ohiwa M, Hayashi T, Wada H, Minamikawa K, Shirakawa S, Suzuki K. Factor VII Mie: homozygous asymptomatic type I deficiency caused by an amino acid substitution of His (CAC) for Arg(247) (CGC) in the catalytic domain. Thromb Haemost. 1994 Jun;71(6):773-7. PMID:7974346
↑Arbini AA, Mannucci M, Bauer KA. A Thr359Met mutation in factor VII of a patient with a hereditary deficiency causes defective secretion of the molecule. Blood. 1996 Jun 15;87(12):5085-94. PMID:8652821
↑Bharadwaj D, Iino M, Kontoyianni M, Smith KJ, Foster DC, Kisiel W. Factor VII central. A novel mutation in the catalytic domain that reduces tissue factor binding, impairs activation by factor Xa, and abolishes amidolytic and coagulant activity. J Biol Chem. 1996 Nov 29;271(48):30685-91. PMID:8940045
↑Tamary H, Fromovich Y, Shalmon L, Reich Z, Dym O, Lanir N, Brenner B, Paz M, Luder AS, Blau O, Korostishevsky M, Zaizov R, Seligsohn U. Ala244Val is a common, probably ancient mutation causing factor VII deficiency in Moroccan and Iranian Jews. Thromb Haemost. 1996 Sep;76(3):283-91. PMID:8883260
↑Leonard BJ, Chen Q, Blajchman MA, Ofosu FA, Sridhara S, Yang D, Clarke BJ. Factor VII deficiency caused by a structural variant N57D of the first epidermal growth factor domain. Blood. 1998 Jan 1;91(1):142-8. PMID:9414278
↑Ozawa T, Takikawa Y, Niiya K, Ejiri N, Suzuki K, Sato S, Sakuragawa N. Factor VII Morioka (FVII L-26P): a homozygous missense mutation in the signal sequence identified in a patient with factor VII deficiency. Br J Haematol. 1998 Apr;101(1):47-9. PMID:9576180
↑Alshinawi C, Scerri C, Galdies R, Aquilina A, Felice AE. Two new missense mutations (P134T and A244V) in the coagulation factor VII gene. Hum Mutat. 1998;Suppl 1:S189-91. PMID:9452082
↑Au WY, Lam CC, Chan EC, Kwong YL. Two novel factor VII gene mutations in a Chinese family with factor VII deficiency. Br J Haematol. 2000 Oct;111(1):143-5. PMID:11091194
↑Millar DS, Kemball-Cook G, McVey JH, Tuddenham EG, Mumford AD, Attock GB, Reverter JC, Lanir N, Parapia LA, Reynaud J, Meili E, von Felton A, Martinowitz U, Prangnell DR, Krawczak M, Cooper DN. Molecular analysis of the genotype-phenotype relationship in factor VII deficiency. Hum Genet. 2000 Oct;107(4):327-42. PMID:11129332
↑Nagaizumi K, Inaba H, Suzuki T, Hatta Y, Hagiwara T, Amano K, Arai M, Fukutake K. Two double heterozygous mutations in the F7 gene show different manifestations. Br J Haematol. 2002 Dec;119(4):1052-8. PMID:12472587
↑Takamiya O, Hino K. A patient homozygous for a Gly354Cys mutation in factor VII that results in severely impaired secretion of the molecule, but not complete deficiency. Br J Haematol. 2004 Feb;124(3):336-42. PMID:14717781
↑Mota L, Shetty S, Idicula-Thomas S, Ghosh K. Phenotypic and genotypic characterization of Factor VII deficiency patients from Western India. Clin Chim Acta. 2009 Nov;409(1-2):106-11. doi: 10.1016/j.cca.2009.09.007. Epub, 2009 Sep 13. PMID:19751712 doi:10.1016/j.cca.2009.09.007
↑Herrmann FH, Wulff K, Auerswald G, Schulman S, Astermark J, Batorova A, Kreuz W, Pollmann H, Ruiz-Saez A, De Bosch N, Salazar-Sanchez L. Factor VII deficiency: clinical manifestation of 717 subjects from Europe and Latin America with mutations in the factor 7 gene. Haemophilia. 2009 Jan;15(1):267-80. doi: 10.1111/j.1365-2516.2008.01910.x. Epub, 2008 Oct 30. PMID:18976247 doi:10.1111/j.1365-2516.2008.01910.x
↑Landau D, Rosenberg N, Zivelin A, Staretz-Chacham O, Kapelushnik J. Familial factor VII deficiency with foetal and neonatal fatal cerebral haemorrhage associated with homozygosis to Gly180Arg mutation. Haemophilia. 2009 May;15(3):774-8. doi: 10.1111/j.1365-2516.2009.02004.x. PMID:19432927 doi:10.1111/j.1365-2516.2009.02004.x
↑Kwon MJ, Yoo KY, Lee KO, Kim SH, Kim HJ. Recurrent mutations and genotype-phenotype correlations in hereditary factor VII deficiency in Korea. Blood Coagul Fibrinolysis. 2011 Mar;22(2):102-5. doi:, 10.1097/MBC.0b013e328343641a. PMID:21206266 doi:10.1097/MBC.0b013e328343641a
↑Jiang M, Wang Z, Yu Z, Bai X, Su J, Cao L, Zhang W, Ruan C. A novel missense mutation close to the charge-stabilizing system in a patient with congenital factor VII deficiency. Blood Coagul Fibrinolysis. 2011 Jun;22(4):264-70. doi:, 10.1097/MBC.0b013e3283447388. PMID:21372693 doi:10.1097/MBC.0b013e3283447388
↑Pike AC, Brzozowski AM, Roberts SM, Olsen OH, Persson E. Structure of human factor VIIa and its implications for the triggering of blood coagulation. Proc Natl Acad Sci U S A. 1999 Aug 3;96(16):8925-30. PMID:10430872
