1wfb | pdb_00001wfb

WINTER FLOUNDER ANTIFREEZE PROTEIN ISOFORM HPLC6 AT-180 DEGREES C

spinqualitylabelsall models 1wfb, resolution 1.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1wfb is a 2 chain structure with sequence from Pseudopleuronectes americanus. The December 2009 RCSB PDB Molecule of the Month feature on Antifreeze Proteins by David Goodsell is 10.2210/rcsb_pdb/mom_2009_12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: NH2 Related: 1wfa Resources: FirstGlance, OCA, RCSB, PDBsum Function [ANPA_PSEAM] Antifreeze proteins lower the blood freezing point. Publication Abstract from PubMed Antifreeze proteins provide fish with protection against the freezing effect of polar environments by binding to ice surfaces and inhibiting growth of ice crystals. We present the X-ray crystal structure at 1.5 A resolution of a lone alpha-helical antifreeze protein from winter flounder, which provides a detailed look at its ice-binding features. These consist of four repeated ice-binding motifs, the side chains of which are inherently rigid or restrained by pair-wise side-chain interactions to form a flat binding surface. Elaborate amino- and carboxy-terminal cap structures are also present, which explain the protein's rich alpha-helical content in solution. We propose an ice-binding model that accounts for the binding specificity of the antifreeze protein along the <0112> axes of the (2021) ice planes. Ice-binding structure and mechanism of an antifreeze protein from winter flounder.,Sicheri F, Yang DS Nature. 1995 Jun 1;375(6530):427-31. PMID:7760940 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Antifreeze protein

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