2jtm | pdb_00002jtm

Solution structure of Sso6901 from Sulfolobus solfataricus P2

spinqualitylabelsall models 2jtm, 20 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2jtm is a 1 chain structure with sequence from Atcc 35091. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Function [CREN7_SULSO] A highly abundant probable chromatin protein, it binds double-strand DNA without sequence specificity; there is approximately 1 Cren7 molecule for 12 bp of DNA. Constrains negative DNA supercoils, increases DNA stability against thermal denaturation. Binding does not require protein methylation. Binds single-strand DNA weakly. 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 Archaea contain a variety of chromatin proteins consistent with the evolution of different genome packaging mechanisms. Among the two main kingdoms in the Archaea, Euryarchaeota synthesize histone homologs, whereas Crenarchaeota have not been shown to possess a chromatin protein conserved at the kingdom level. We report the identification of Cren7, a novel family of chromatin proteins highly conserved in the Crenarchaeota. A small, basic, methylated and abundant protein, Cren7 displays a higher affinity for double-stranded DNA than for single-stranded DNA, constrains negative DNA supercoils and is associated with genomic DNA in vivo. The solution structure and DNA-binding surface of Cren7 from the hyperthermophilic crenarchaeon Sulfolobus solfataricus were determined by NMR. The protein adopts an SH3-like fold. It interacts with duplex DNA through a beta-sheet and a long flexible loop, presumably resulting in DNA distortions through intercalation of conserved hydrophobic residues into the DNA structure. These data suggest that the crenarchaeal kingdom in the Archaea shares a common strategy in chromatin organization. Biochemical and structural characterization of Cren7, a novel chromatin protein conserved among Crenarchaea.,Guo L, Feng Y, Zhang Z, Yao H, Luo Y, Wang J, Huang L Nucleic Acids Res. 2008 Mar;36(4):1129-37. Epub 2007 Dec 20. PMID:18096617 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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