This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1o9x

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 16:44, 5 January 2015

HUMAN SERUM ALBUMIN COMPLEXED WITH TETRADECANOIC ACID (MYRISTIC ACID) AND HEMIN

Structural highlights

1o9x is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1ao6, 1bj5, 1bke, 1bm0, 1e78, 1e7a, 1e7b, 1e7c, 1e7e, 1e7f, 1e7g, 1e7h, 1e7i, 1gni, 1gnj, 1h9z, 1ha2, 1hk1, 1hk2, 1hk3, 1hk4, 1hk5, 1uor
Resources:	FirstGlance, OCA, RCSB, PDBsum

Disease

[ALBU_HUMAN] Defects in ALB are a cause of familial dysalbuminemic hyperthyroxinemia (FDH) [MIM: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.^[1] ^[2] ^[3] ^[4]

Function

[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.^[5]

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

BACKGROUND: Human serum albumin (HSA) is an abundant plasma protein that binds a wide variety of hydrophobic ligands including fatty acids, bilirubin, thyroxine and hemin. Although HSA-heme complexes do not bind oxygen reversibly, it may be possible to develop modified HSA proteins or heme groups that will confer this ability on the complex. RESULTS: We present here the crystal structure of a ternary HSA-hemin-myristate complex, formed at a 1:1:4 molar ratio, that contains a single hemin group bound to subdomain IB and myristate bound at six sites. The complex displays a conformation that is intermediate between defatted HSA and HSA-fatty acid complexes; this is likely to be due to low myristate occupancy in the fatty acid binding sites that drive the conformational change. The hemin group is bound within a narrow D-shaped hydrophobic cavity which usually accommodates fatty acid; the hemin propionate groups are coordinated by a triad of basic residues at the pocket entrance. The iron atom in the centre of the hemin is coordinated by Tyr161. CONCLUSION: The structure of the HSA-hemin-myristate complex (PDB ID 1o9x) reveals the key polar and hydrophobic interactions that determine the hemin-binding specificity of HSA. The details of the hemin-binding environment of HSA provide a structural foundation for efforts to modify the protein and/or the heme molecule in order to engineer complexes that have favourable oxygen-binding properties.

Crystal structural analysis of human serum albumin complexed with hemin and fatty acid.,Zunszain PA, Ghuman J, Komatsu T, Tsuchida E, Curry S BMC Struct Biol. 2003 Jul 7;3:6. Epub 2003 Jul 7. PMID:12846933^[6]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Sunthornthepvarakul T, Angkeow P, Weiss RE, Hayashi Y, Refetoff S. An identical missense mutation in the albumin gene results in familial dysalbuminemic hyperthyroxinemia in 8 unrelated families. Biochem Biophys Res Commun. 1994 Jul 29;202(2):781-7. PMID:8048949
↑ Rushbrook JI, Becker E, Schussler GC, Divino CM. Identification of a human serum albumin species associated with familial dysalbuminemic hyperthyroxinemia. J Clin Endocrinol Metab. 1995 Feb;80(2):461-7. PMID:7852505
↑ Wada N, Chiba H, Shimizu C, Kijima H, Kubo M, Koike T. A novel missense mutation in codon 218 of the albumin gene in a distinct phenotype of familial dysalbuminemic hyperthyroxinemia in a Japanese kindred. J Clin Endocrinol Metab. 1997 Oct;82(10):3246-50. PMID:9329347
↑ Sunthornthepvarakul T, Likitmaskul S, Ngowngarmratana S, Angsusingha K, Kitvitayasak S, Scherberg NH, Refetoff S. Familial dysalbuminemic hypertriiodothyroninemia: a new, dominantly inherited albumin defect. J Clin Endocrinol Metab. 1998 May;83(5):1448-54. PMID:9589637
↑ Lu J, Stewart AJ, Sadler PJ, Pinheiro TJ, Blindauer CA. Albumin as a zinc carrier: properties of its high-affinity zinc-binding site. Biochem Soc Trans. 2008 Dec;36(Pt 6):1317-21. doi: 10.1042/BST0361317. PMID:19021548 doi:10.1042/BST0361317
↑ Zunszain PA, Ghuman J, Komatsu T, Tsuchida E, Curry S. Crystal structural analysis of human serum albumin complexed with hemin and fatty acid. BMC Struct Biol. 2003 Jul 7;3:6. Epub 2003 Jul 7. PMID:12846933 doi:10.1186/1472-6807-3-6

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 See Also
7 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1o9x"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1o9x]] is a 1 chain structure with sequence 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=1O9X OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1O9X FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MYR:MYRISTIC+ACID'>MYR</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MYR:MYRISTIC+ACID'>MYR</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ao6|1ao6]], [[1bj5|1bj5]], [[1bke|1bke]], [[1bm0|1bm0]], [[1e78|1e78]], [[1e7a|1e7a]], [[1e7b|1e7b]], [[1e7c|1e7c]], [[1e7e|1e7e]], [[1e7f|1e7f]], [[1e7g|1e7g]], [[1e7h|1e7h]], [[1e7i|1e7i]], [[1gni|1gni]], [[1gnj|1gnj]], [[1h9z|1h9z]], [[1ha2|1ha2]], [[1hk1|1hk1]], [[1hk2|1hk2]], [[1hk3|1hk3]], [[1hk4|1hk4]], [[1hk5|1hk5]], [[1uor|1uor]]</td></tr>
+<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ao6|1ao6]], [[1bj5|1bj5]], [[1bke|1bke]], [[1bm0|1bm0]], [[1e78|1e78]], [[1e7a|1e7a]], [[1e7b|1e7b]], [[1e7c|1e7c]], [[1e7e|1e7e]], [[1e7f|1e7f]], [[1e7g|1e7g]], [[1e7h|1e7h]], [[1e7i|1e7i]], [[1gni|1gni]], [[1gnj|1gnj]], [[1h9z|1h9z]], [[1ha2|1ha2]], [[1hk1|1hk1]], [[1hk2|1hk2]], [[1hk3|1hk3]], [[1hk4|1hk4]], [[1hk5|1hk5]], [[1uor|1uor]]</td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1o9x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1o9x OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1o9x RCSB], [http://www.ebi.ac.uk/pdbsum/1o9x PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1o9x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1o9x OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1o9x RCSB], [http://www.ebi.ac.uk/pdbsum/1o9x PDBsum]</span></td></tr>
-<table>
+</table>
 == Disease ==
 [[http://www.uniprot.org/uniprot/ALBU_HUMAN ALBU_HUMAN]] Defects in ALB are a cause of familial dysalbuminemic hyperthyroxinemia (FDH) [MIM:[http://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>
@@ Line 37: / Line 37: @@
 </StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Curry, S.]]
+[[Category: Curry, S]]
-[[Category: Ghuman, J.]]
+[[Category: Ghuman, J]]
-[[Category: Komatsu, T.]]
+[[Category: Komatsu, T]]
-[[Category: Tsuchida, E.]]
+[[Category: Tsuchida, E]]
-[[Category: Zunszain, P A.]]
+[[Category: Zunszain, P A]]
 [[Category: Fatty acid transport]]
 [[Category: Heme-binding]]
 [[Category: Lipid-binding]]
 [[Category: Plasma protein]]

1o9x

From Proteopedia

Revision as of 16:44, 5 January 2015

HUMAN SERUM ALBUMIN COMPLEXED WITH TETRADECANOIC ACID (MYRISTIC ACID) AND HEMIN

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox