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[[Image:1fza.jpg|left|200px]]


{{Structure
==CRYSTAL STRUCTURE OF FIBRINOGEN FRAGMENT D==
|PDB= 1fza |SIZE=350|CAPTION= <scene name='initialview01'>1fza</scene>, resolution 2.9&Aring;
<StructureSection load='1fza' size='340' side='right'caption='[[1fza]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene> and <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>
<table><tr><td colspan='2'>[[1fza]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FZA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FZA FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.9&#8491;</td></tr>
|GENE=  
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
}}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fza FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fza OCA], [https://pdbe.org/1fza PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fza RCSB], [https://www.ebi.ac.uk/pdbsum/1fza PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fza ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/FIBA_HUMAN FIBA_HUMAN] Defects in FGA are a cause of congenital afibrinogenemia (CAFBN) [MIM:[https://omim.org/entry/202400 202400]. This is a rare autosomal recessive disorder characterized by bleeding that varies from mild to severe and by complete absence or extremely low levels of plasma and platelet fibrinogen. Note=The majority of cases of afibrinogenemia are due to truncating mutations. Variations in position Arg-35 (the site of cleavage of fibrinopeptide a by thrombin) leads to alpha-dysfibrinogenemias.  Defects in FGA are a cause of amyloidosis type 8 (AMYL8) [MIM:[https://omim.org/entry/105200 105200]; also known as systemic non-neuropathic amyloidosis or Ostertag-type amyloidosis. AMYL8 is a hereditary generalized amyloidosis due to deposition of apolipoprotein A1, fibrinogen and lysozyme amyloids. Viscera are particularly affected. There is no involvement of the nervous system. Clinical features include renal amyloidosis resulting in nephrotic syndrome, arterial hypertension, hepatosplenomegaly, cholestasis, petechial skin rash.<ref>PMID:8097946</ref>  
== Function ==
[https://www.uniprot.org/uniprot/FIBA_HUMAN FIBA_HUMAN] Fibrinogen has a double function: yielding monomers that polymerize into fibrin and acting as a cofactor in platelet aggregation.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fz/1fza_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1fza ConSurf].
<div style="clear:both"></div>


'''CRYSTAL STRUCTURE OF FIBRINOGEN FRAGMENT D'''
==See Also==
 
*[[Fibrinogen|Fibrinogen]]
 
== References ==
==Overview==
<references/>
In blood coagulation, units of the protein fibrinogen pack together to form a fibrin clot, but a crystal structure for fibrinogen is needed to understand how this is achieved. The structure of a core fragment (fragment D) from human fibrinogen has now been determined to 2.9 A resolution. The 86K three-chained structure consists of a coiled-coil region and two homologous globular entitles oriented at approximately 130 degrees to each other. Additionally, the covalently bound dimer of fragment D, known as 'double-D', was isolated from human fibrin, crystallized in the presence of a Gly-Pro-Arg-Pro-amide peptide ligand, which simulates the donor polymerization site, and its structure solved by molecular replacement with the model of fragment D.
__TOC__
 
</StructureSection>
==Disease==
Known diseases associated with this structure: Afibrinogenemia, congenital OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Afibrinogenemia, congenital OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Amyloidosis, hereditary renal OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, alpha type, causing bleeding diathesis OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, alpha type, causing recurrent thrombosis OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134820 134820]], Dysfibrinogenemia, beta type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Dysfibrinogenemia, gamma type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]], Hypofibrinogenemia, gamma type OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]], Thrombophilia, dysfibrinogenemic OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134830 134830]], Thrombophilia, dysfibrinogenemic OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=134850 134850]]
 
==About this Structure==
1FZA is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FZA OCA].
 
==Reference==
Crystal structures of fragment D from human fibrinogen and its crosslinked counterpart from fibrin., Spraggon G, Everse SJ, Doolittle RF, Nature. 1997 Oct 2;389(6650):455-62. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9333233 9333233]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Doolittle, R F.]]
[[Category: Doolittle RF]]
[[Category: Everse, S J.]]
[[Category: Everse SJ]]
[[Category: Spraggon, G.]]
[[Category: Spraggon G]]
[[Category: CA]]
[[Category: NAG]]
[[Category: blood coagulation]]
[[Category: fibrin]]
[[Category: fibrinogen]]
[[Category: plasma]]
[[Category: platelet]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:15:57 2008''

Latest revision as of 14:18, 27 March 2024

CRYSTAL STRUCTURE OF FIBRINOGEN FRAGMENT DCRYSTAL STRUCTURE OF FIBRINOGEN FRAGMENT D

Structural highlights

1fza is a 6 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.9Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

FIBA_HUMAN Defects in FGA are a cause of congenital afibrinogenemia (CAFBN) [MIM:202400. This is a rare autosomal recessive disorder characterized by bleeding that varies from mild to severe and by complete absence or extremely low levels of plasma and platelet fibrinogen. Note=The majority of cases of afibrinogenemia are due to truncating mutations. Variations in position Arg-35 (the site of cleavage of fibrinopeptide a by thrombin) leads to alpha-dysfibrinogenemias. Defects in FGA are a cause of amyloidosis type 8 (AMYL8) [MIM:105200; also known as systemic non-neuropathic amyloidosis or Ostertag-type amyloidosis. AMYL8 is a hereditary generalized amyloidosis due to deposition of apolipoprotein A1, fibrinogen and lysozyme amyloids. Viscera are particularly affected. There is no involvement of the nervous system. Clinical features include renal amyloidosis resulting in nephrotic syndrome, arterial hypertension, hepatosplenomegaly, cholestasis, petechial skin rash.[1]

Function

FIBA_HUMAN Fibrinogen has a double function: yielding monomers that polymerize into fibrin and acting as a cofactor in platelet aggregation.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

References

  1. ↑ Benson MD, Liepnieks J, Uemichi T, Wheeler G, Correa R. Hereditary renal amyloidosis associated with a mutant fibrinogen alpha-chain. Nat Genet. 1993 Mar;3(3):252-5. PMID:8097946 doi:http://dx.doi.org/10.1038/ng0393-252

1fza, resolution 2.90Å

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