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1g82
From Proteopedia
STRUCTURE OF FIBROBLAST GROWTH FACTOR 9
Overview
Fibroblast growth factors (FGFs) constitute a family of at least 20 structurally related heparin-binding polypeptides active in regulating cell growth, survival, differentiation and migration. FGF9, originally discovered as a glia-activating factor, shares 30% sequence identity with other FGFs and has a unique spectrum of target-cell specificity. FGF9 crystallized in the tetragonal space group I4(1), with unit-cell parameters a = b = 151.9, c = 117.2 A. The structure of the glycosylated protein has been refined to an R value of 21.0% with R(free) = 24.8%) at 2.6 A resolution. The four molecules in the asymmetric unit are arranged in two non-crystallographic dimers, with the dimer interface composed partly of residues from N- and C-terminal extensions from the FGF core structure. Most of the receptor-binding residues identified in FGF1- and FGF2-receptor complexes are buried in the dimer interface, with the beta8-beta9 loop stabilized in a particular conformation by an intramolecular hydrogen-bonding network. The potential heparin-binding sites are in a pattern distinct from FGF1 and FGF2. The carbohydrate moiety attached at Asn79 has no structural influence.
About this Structure
1G82 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of fibroblast growth factor 9 shows a symmetric dimer with unique receptor- and heparin-binding interfaces., Hecht HJ, Adar R, Hofmann B, Bogin O, Weich H, Yayon A, Acta Crystallogr D Biol Crystallogr. 2001 Mar;57(Pt 3):378-84. PMID:11223514 Page seeded by OCA on Fri May 2 17:15:29 2008
