1rsm

THE 2-ANGSTROMS RESOLUTION STRUCTURE OF A THERMOSTABLE RIBONUCLEASE A CHEMICALLY CROSS-LINKED BETWEEN LYSINE RESIDUES 7 AND 41

spinqualitylabelsall models 1rsm, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1rsm is a 1 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: NIN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RNAS1_BOVIN Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA. 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 crystal structure of Lys-7-(dinitrophenylene)-Lys-41-cross-linked ribonuclease A has been determined by molecular replacement and refined by restrained least-squares methods to an R factor of 0.18 at 2.0-A resolution. Diffraction intensity data were collected by using a conventional diffractometer and an x-ray area detector. Comparison of the thermostable cross-linked protein and the native enzyme shows them to be structurally similar, with a rms difference in backbone and side-chain atoms of 0.52 and 1.34 A, respectively. Native and modified proteins additionally show 35 common bound solvent sites and similar overall temperature factor behavior, despite localized differences resulting from cross-link introduction, altered crystal pH, or lattice interactions with neighboring molecules. These results are discussed in the context of proposals on the origins of thermostability in the cross-linked enzyme. The 2-A resolution structure of a thermostable ribonuclease A chemically cross-linked between lysine residues 7 and 41.,Weber PC, Sheriff S, Ohlendorf DH, Finzel BC, Salemme FR Proc Natl Acad Sci U S A. 1985 Dec;82(24):8473-7. PMID:3936036 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribonuclease 3D structures

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