3a4k | pdb_00003a4k

Crystal structural analysis of HindIII restriction endonuclease in complex with cognate DNA and divalent cations at 2.17 angstrom resolution

spinqualitylabelsall models 3a4k, resolution 2.17Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3a4k is a 14 chain structure with sequence from Haein. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACT, GOL, MG, MN Related: 2e52 Gene: hindIIIR (HAEIN) Activity: Type II site-specific deoxyribonuclease, with EC number 3.1.21.4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [T2D3_HAEIN] Recognizes the double-stranded sequence AAGCTT and cleaves after A-1. 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 three-dimensional crystal structures of HindIII bound to its cognate DNA with and without divalent cations were solved at 2.17 and 2.00 A resolution, respectively. HindIII forms a dimer. The structures showed that HindIII belongs to the EcoRI-like (alpha-class) subfamily of type II restriction endonucleases. The cognate DNA-complex structures revealed the specific DNA-recognition mechanism of HindIII by which it recognizes the palindromic sequence A/AGCTT. In the Mg(2+) ion-soaked structure the DNA was cleaved and two ions were bound at each active site, corresponding to the two-metal-ion mechanism. Structures of restriction endonuclease HindIII in complex with its cognate DNA and divalent cations.,Watanabe N, Takasaki Y, Sato C, Ando S, Tanaka I Acta Crystallogr D Biol Crystallogr. 2009 Dec;65(Pt 12):1326-33. doi:, 10.1107/S0907444909041134. Epub 2009 Nov 17. PMID:19966419 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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