View source for 2jor


==NMR Solution Structure, Stability, and Interaction of the Recombinant Bovine Fibrinogen alphaC-Domain Fragment==
<StructureSection load='2jor' size='340' side='right'caption='[[2jor]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2jor]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JOR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JOR FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 20 models</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=2jor FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jor OCA], [https://pdbe.org/2jor PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jor RCSB], [https://www.ebi.ac.uk/pdbsum/2jor PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jor ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FIBA_BOVIN FIBA_BOVIN] 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/jo/2jor_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=2jor ConSurf].
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== Publication Abstract from PubMed ==
According to the existing hypothesis, in fibrinogen, the COOH-terminal portions of two Aalpha chains are folded into compact alphaC-domains that interact intramolecularly with each other and with the central region of the molecule; in fibrin, the alphaC-domains switch to an intermolecular interaction resulting in alphaC-polymers. In agreement, our recent NMR study identified within the bovine fibrinogen Aalpha374-538 alphaC-domain fragment an ordered compact structure including a beta-hairpin restricted at the base by a 423-453 disulfide linkage. To establish the complete structure of the alphaC-domain and to further test the hypothesis, we expressed a shorter alphaC-fragment, Aalpha406-483, and performed detailed analysis of its structure, stability, and interactions. NMR experiments on the Aalpha406-483 fragment identified a second loose beta-hairpin formed by residues 459-476, yielding a structure consisting of an intrinsically unstable mixed parallel/antiparallel beta-sheet. Size-exclusion chromatography and sedimentation velocity experiments revealed that the Aalpha406-483 fragment forms soluble oligomers whose fraction increases with an increase in concentration. This was confirmed by sedimentation equilibrium analysis, which also revealed that the addition of each monomer to an assembling alphaC-oligomer substantially increases its stabilizing free energy. In agreement, unfolding experiments monitored by CD established that oligomerization of Aalpha406-483 results in increased thermal stability. Altogether, these experiments establish the complete NMR solution structure of the Aalpha406-483 alphaC-domain fragment, provide direct evidence for the intra- and intermolecular interactions between the alphaC-domains, and confirm that these interactions are thermodynamically driven.

NMR solution structure, stability, and interaction of the recombinant bovine fibrinogen alphaC-domain fragment.,Burton RA, Tsurupa G, Hantgan RR, Tjandra N, Medved L Biochemistry. 2007 Jul 24;46(29):8550-60. Epub 2007 Jun 23. PMID:17590019<ref>PMID:17590019</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[Fibrinogen|Fibrinogen]]
== References ==
<references/>
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</StructureSection>
[[Category: Bos taurus]]
[[Category: Large Structures]]
[[Category: Burton RA]]
[[Category: Leonid M]]
[[Category: Nico T]]
[[Category: Roy H]]
[[Category: Tsurupa G]]