3fjf: Difference between revisions

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[[Image:3fjf.png|left|200px]]


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==Crystal structure of C83T mutant of Human acidic fibroblast growth factor==
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<StructureSection load='3fjf' size='340' side='right'caption='[[3fjf]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3fjf]] is a 2 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=3FJF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FJF FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMT:FORMIC+ACID'>FMT</scene></td></tr>
{{STRUCTURE_3fjf|  PDB=3fjf  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3fjf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fjf OCA], [https://pdbe.org/3fjf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fjf RCSB], [https://www.ebi.ac.uk/pdbsum/3fjf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fjf ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FGF1_HUMAN FGF1_HUMAN] Plays an important role in the regulation of cell survival, cell division, angiogenesis, cell differentiation and cell migration. Functions as potent mitogen in vitro.<ref>PMID:8663044</ref> <ref>PMID:16597617</ref> <ref>PMID:20145243</ref>
== 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/fj/3fjf_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=3fjf ConSurf].
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== Publication Abstract from PubMed ==
The 22 members of the mouse/human fibroblast growth factor (FGF) family of proteins contain a conserved cysteine residue at position 83 (numbering scheme of the 140-residue form of FGF-1). Sequence and structure information suggests that this position is a free cysteine in 16 members and participates as a half-cystine in at least 3 (and perhaps as many as 6) other members. While a structural role as a half-cystine provides a stability basis for possible selective pressure, it is less clear why this residue is conserved as a free cysteine (although free buried thiols can limit protein functional half-life). To probe the structural role of the free cysteine at position 83 in FGF-1, we constructed Ala, Ser, Thr, Val, and Ile mutations and determined their effects on structure and stability. These results show that position 83 in FGF-1 is thermodynamically optimized to accept a free cysteine. A second cysteine mutation was introduced into wild-type FGF-1 at adjacent position Ala66, which is known to participate as a half-cystine with position 83 in FGF-8, FGF-19, and FGF-23. Results show that, unlike position 83, a free cysteine at position 66 destabilizes FGF-1; however, upon oxidation, a near-optimal disulfide bond is formed between Cys66 and Cys83, resulting in approximately 14 kJ/mol of increased thermostability. Thus, while the conserved free cysteine at position 83 in the majority of the FGF proteins may have a principal role in limiting functional half-life, evidence suggests that it is a vestigial half-cystine.


===Crystal structure of C83T mutant of Human acidic fibroblast growth factor===
Structural basis of conserved cysteine in the fibroblast growth factor family: evidence for a vestigial half-cystine.,Lee J, Blaber M J Mol Biol. 2009 Oct 16;393(1):128-39. Epub 2009 Aug 13. PMID:19683004<ref>PMID:19683004</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
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*[[Fibroblast growth factor 3D structures|Fibroblast growth factor 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 19683004 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_19683004}}
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</StructureSection>
==About this Structure==
3FJF is a 2 chains structure with 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=3FJF OCA].
 
==Reference==
<ref group="xtra">PMID:19683004</ref><references group="xtra"/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Blaber, M.]]
[[Category: Large Structures]]
[[Category: Lee, J.]]
[[Category: Blaber M]]
[[Category: Acetylation]]
[[Category: Lee J]]
[[Category: Angiogenesis]]
[[Category: Beta-trefoil]]
[[Category: Developmental protein]]
[[Category: Differentiation]]
[[Category: Growth factor]]
[[Category: Heparin-binding]]
[[Category: Hormone]]
[[Category: Mitogen]]
[[Category: Polymorphism]]
 
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