2iz3

Solution structure of human beta-microseminoproteinSolution structure of human beta-microseminoprotein

Structural highlights 2iz3 is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease MSMB_HUMAN Defects in MSMB are the cause of susceptibility to prostate cancer hereditary type 13 (HPC13) [MIM:611928. It is a condition associated with familial predisposition to cancer of the prostate. Most prostate cancers are adenocarcinomas that develop in the acini of the prostatic ducts. Other rare histopathologic types of prostate cancer that occur in approximately 5% of patients include small cell carcinoma, mucinous carcinoma, prostatic ductal carcinoma, transitional cell carcinoma, squamous cell carcinoma, basal cell carcinoma, adenoid cystic carcinoma (basaloid), signet-ring cell carcinoma and neuroendocrine carcinoma. Function MSMB_HUMAN 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 Beta-microseminoprotein (MSP) is a small cysteine-rich protein (molecular mass about 10 kDa) first isolated from human seminal plasma and later identified in several other organisms. The function of MSP is not known, but a recent study has shown MSP to bind CRISP-3, a protein present in neutrophilic granulocytes. The amino acid sequence is highly variable between species raising the question of the evolutionary conservation of the 3D structure. Here we present NMR solution structures of both the human and the porcine MSP. The two proteins (sequence identity 51%) have a very similar 3D structure with the secondary structure elements well conserved and with most of the amino acid substitutions causing a change of charge localized to one side of the molecule. MSP is a beta-sheet-rich protein with two distinct domains. The N-terminal domain is composed of a four-stranded beta-sheet, with the strands arranged according to the Greek key-motif, and a less structured part. The C-terminal domain contains two two-stranded beta-sheets with no resemblance to known structural motifs. The two domains, connected to each other by the peptide backbone, one disulfide bond, and interactions between the N and C termini, are oriented to give the molecule a rather extended structure. This global fold differs markedly from that of a previously published structure for porcine MSP, in which the two domains have an entirely different orientation to each other. The difference probably stems from a misinterpretation of ten specific inter-domain NOEs. Solution structures of human and porcine beta-microseminoprotein.,Ghasriani H, Teilum K, Johnsson Y, Fernlund P, Drakenberg T J Mol Biol. 2006 Sep 22;362(3):502-15. Epub 2006 Jul 21. PMID:16930619 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

spinqualitylabelsall models 2iz3 Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image