2w5i | pdb_00002w5i

RNASE A-AP3A COMPLEX

spinqualitylabelsall models 2w5i, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2w5i is a 2 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ATP Related: 1ssb, 1afu, 1w4q, 1c0b, 6rat, 1ymr, 1o0o, 8rsa, 5rsa, 1rno, 7rat, 1izq, 1eid, 1cjq, 1eos, 1rnn, 1j82, 1qhc, 1ymw, 1afk, 1f0v, 1dy5, 1o0h, 1jn4, 1rnq, 1rnm, 1rbf, 1z3m, 1rnx, 1rob, 1rbn, 1rbx, 1eow, 1rbi, 1rbj, 1dfj, 1rsm, 1kf5, 1xps, 1rat, 1fev, 2aas, 1j80, 1rhb, 1b6v, 1fs3, 1rpg, 3srn, 1z6s, 1kf8, 4rsk, 1rtb, 1bzq, 9rsa, 1bel, 1kf4, 1kf7, 1rbw, 1eie, 9rat, 1rpf, 1o0m, 1c8w, 1rnc, 1rca, 1jvt, 1c0c, 3rsd, 1xpt, 1rbb, 2blz, 3rsp, 1ssc, 8rat, 2apq, 1w4o, 1j7z, 1rbd, 1rnz, 1jvv, 1rar, 1kf3, 1z3l, 1aqp, 1rbh, 1rbg, 1o0n, 1js0, 3rsk, 1ssa, 1cjr, 1eic, 1d5d, 1ymn, 1j81, 1rnw, 1rph, 2rns, 1rta, 1rny, 1rnu, 1z3p, 1gv7, 1rcn, 1rnv, 4rat, 1w4p, 4rsd, 1a5p, 1wbu, 1rha, 1ras, 2blp, 1rnd, 1kf2, 1d5h, 1srn, 2rat, 1d5e, 1izp, 1o0f, 1izr, 1c9x, 2rln, 4srn, 1c9v, 1u1b, 5rat, 1ruv, 1rbc, 1afl, 1z6d, 1rbe, 1a5q, 1kh8, 1lsq, 1jvu, 1a2w, 3rat, 3rn3 Activity: Pancreatic ribonuclease, with EC number 3.1.27.5 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 Ribonuclease A is the archetype of a functionally diverse superfamily of vertebrate-specific ribonucleases. Inhibitors of its action have potential use in the elucidation of the in vivo roles of these enzymes and in the treatment of pathologies associated therewith. Derivatives of adenosine 5'-pyrophosphate are the most potent nucleotide-based inhibitors known. Here, we use X-ray crystallography to visualize the binding of four naturally-occurring derivatives that contain 5'-pyrophosphate-linked extensions. 5'-ATP binds with the adenine occupying the B(2) subsite in the manner of an RNA substrate but with the gamma-phosphate at the P(1) subsite. Diadenosine triphosphate (Ap(3)A) binds with the adenine in syn conformation, the beta-phosphate as the principal P(1) subsite ligand and without order beyond the gamma-phosphate. NADPH and NADP(+) bind with the adenine stacked against an alternative rotamer of His119, the 2'-phosphate at the P(1) subsite and without order beyond the 5'-alpha-phosphate. We also present the structure of the complex formed with pyrophosphate ion. The structural data enable existing kinetic data on the binding of these compounds to a variety of ribonucleases to be rationalized and suggest that as the complexity of the 5'-linked extension increases, the need to avoid unfavorable contacts places limitations on the number of possible binding modes. (c) 2009 Wiley Periodicals, Inc. Biopolymers, 2009. Influence of naturally-occurring 5'-pyrophosphate-linked substituents on the binding of adenylic inhibitors to ribonuclease A: An X-ray crystallographic study.,Holloway DE, Chavali GB, Leonidas DD, Baker MD, Acharya KR Biopolymers. 2009 Feb 3. PMID:19191310 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribonuclease 3D structures Temp

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