1eii

NMR STRUCTURE OF HOLO CELLULAR RETINOL-BINDING PROTEIN IINMR STRUCTURE OF HOLO CELLULAR RETINOL-BINDING PROTEIN II

Structural highlights 1eii is a 1 chain structure with sequence from Rattus norvegicus. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Ligands: Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RET2_RAT Intracellular transport of retinol. 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 The structure and backbone dynamics of rat holo cellular retinol-binding protein II (holo-CRBP II) in solution has been determined by multidimensional NMR. The final structure ensemble was based on 3980 distance and 30 dihedral angle restraints, and was calculated using metric matrix distance geometry with pairwise Gaussian metrization followed by simulated annealing. The average RMS deviation of the backbone atoms for the final 25 structures relative to their mean coordinates is 0.85(+/-0.09) A. Comparison of the solution structure of holo-CRBP II with apo-CRBP II indicates that the protein undergoes conformational changes not previously observed in crystalline CRBP II, affecting residues 28-35 of the helix-turn-helix, residues 37-38 of the subsequent linker, as well as the beta-hairpin C-D, E-F and G-H loops. The bound retinol is completely buried inside the binding cavity and oriented as in the crystal structure. The order parameters derived from the (15)N T(1), T(2) and steady-state NOE parameters show that the backbone dynamics of holo-CRBP II is restricted throughout the polypeptide. The T(2) derived apparent backbone exchange rate and amide (1)H exchange rate both indicate that the microsecond to second timescale conformational exchange occurring in the portal region of the apo form has been suppressed in the holo form. Binding of retinol induces changes in rat cellular retinol-binding protein II conformation and backbone dynamics.,Lu J, Lin CL, Tang C, Ponder JW, Kao JL, Cistola DP, Li E J Mol Biol. 2000 Jul 14;300(3):619-32. PMID:10884357 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Retinol-binding protein 3D structures

spinqualitylabelsall models 1eii Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image