View source for 1gnj


==HUMAN SERUM ALBUMIN COMPLEXED WITH cis-5,8,11,14-EICOSATETRAENOIC ACID (ARACHIDONIC ACID)==
<StructureSection load='1gnj' size='340' side='right'caption='[[1gnj]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1gnj]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. The January 2003 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Serum Albumin''  by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2003_1 10.2210/rcsb_pdb/mom_2003_1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GNJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GNJ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACD:ARACHIDONIC+ACID'>ACD</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=1gnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gnj OCA], [https://pdbe.org/1gnj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gnj RCSB], [https://www.ebi.ac.uk/pdbsum/1gnj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gnj ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/ALBU_HUMAN ALBU_HUMAN] Defects in ALB are a cause of familial dysalbuminemic hyperthyroxinemia (FDH) [MIM:[https://omim.org/entry/103600 103600]. FDH is a form of euthyroid hyperthyroxinemia that is due to increased affinity of ALB for T(4). It is the most common cause of inherited euthyroid hyperthyroxinemia in Caucasian population.<ref>PMID:8048949</ref> <ref>PMID:7852505</ref> <ref>PMID:9329347</ref> <ref>PMID:9589637</ref> 
== Function ==
[https://www.uniprot.org/uniprot/ALBU_HUMAN ALBU_HUMAN] Serum albumin, the main protein of plasma, has a good binding capacity for water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs. Its main function is the regulation of the colloidal osmotic pressure of blood. Major zinc transporter in plasma, typically binds about 80% of all plasma zinc.<ref>PMID:19021548</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/gn/1gnj_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=1gnj ConSurf].
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== Publication Abstract from PubMed ==
The primary ligands of human serum albumin (HSA), an abundant plasma protein, are non-esterified fatty acids. In vivo, the majority of fatty acids associated with the protein are unsaturated. We present here the first high-resolution crystal structures of HSA complexed with two important unsaturated fatty acids, the monounsaturated oleic acid (C18:1) and the polyunsaturated arachidonic acid (C20:4). Both compounds are observed to occupy the seven binding sites distributed across the protein that are also bound by medium and long-chain saturated fatty acids. Although C18:1 fatty acid binds each site on HSA in a conformation almost identical with that of the corresponding saturated compound (C18:0), the presence of multiple cis double bonds in C20:4 induces distinct binding configurations at some sites. The observed restriction on binding configurations plausibly accounts for differences in the pattern of binding affinities for the primary sites between polyunsaturated fatty acids and their saturated or monounsaturated counterparts.

Crystal structures of human serum albumin complexed with monounsaturated and polyunsaturated fatty acids.,Petitpas I, Grune T, Bhattacharya AA, Curry S J Mol Biol. 2001 Dec 14;314(5):955-60. PMID:11743713<ref>PMID:11743713</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1gnj" style="background-color:#fffaf0;"></div>

==See Also==
*[[Albumin 3D structures|Albumin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Serum Albumin]]
[[Category: Bhattacharya AA]]
[[Category: Curry S]]
[[Category: Gruene T]]
[[Category: Petitpas I]]