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2xvu

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2xvu, resolution 2.60Å ()
Ligands:
Related: 2bxq, 1hk4, 2bxi, 2vuf, 2xvv, 1o9x, 1bke, 2bxk, 1hk1, 1uor, 1h9z, 1e7b, 1hk2, 1hk5, 2esg, 1e7e, 2bxg, 2xvq, 2bxh, 2bxo, 2bxf, 1ysx, 1e7g, 1ao6, 2bxc, 2bxe, 1tf0, 2bxn, 1e7c, 1gnj, 2xw0, 1e7h, 2bxa, 1hk3, 2xsi, 2xvw, 2bxb, 1e7i, 2xw1, 2bxl, 1gni, 1ha2, 1bj5, 1e7a, 2bxp, 2bxd, 1bm0, 1e78, 2vdb, 1e7f, 1n5u, 2bxm, 2bx8, 2vue


Resources: FirstGlance, OCA, RCSB, PDBsum
Coordinates: save as pdb, mmCIF, xml


Contents

HUMAN SERUM ALBUMIN COMPLEXED WITH DANSYL-L-ASPARAGINE

Publication Abstract from PubMed

Human serum albumin (HSA) has two primary binding sites for drug molecules. These sites selectively bind different dansylated amino acid compounds, which-due to their intrinsic fluorescence-have long been used as specific markers for the drug pockets on HSA. We present here the co-crystal structures of HSA in complex with six dansylated amino acids that are specific for either drug site 1 (dansyl-l-asparagine, dansyl-l-arginine, dansyl-l-glutamate) or drug site 2 (dansyl-l-norvaline, dansyl-l-phenylalanine, dansyl-l-sarcosine). Our results explain the structural basis of the site-specificity of different dansylated amino acids. They also show that fatty acid binding has only a modest effect on binding of dansylated amino acids to drug site 1 and identify the location of secondary binding sites.

Structural basis of binding of fluorescent, site-specific dansylated amino acids to human serum albumin., Ryan AJ, Ghuman J, Zunszain PA, Chung CW, Curry S, J Struct Biol. 2010 Oct 18. PMID:20940056

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

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]

About this Structure

2xvu is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

See Also

Reference

  • Ryan AJ, Ghuman J, Zunszain PA, Chung CW, Curry S. Structural basis of binding of fluorescent, site-specific dansylated amino acids to human serum albumin. J Struct Biol. 2010 Oct 18. PMID:20940056 doi:10.1016/j.jsb.2010.10.004
  1. 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
  2. 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
  3. 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
  4. 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
  5. 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

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