4gs3

Dimeric structure of the N-terminal domain of PriB protein from Thermoanaerobacter tencongensis solved ab initio

spinqualitylabelsall models 4gs3, resolution 1.09Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4gs3 is a 1 chain structure with sequence from Caldanaerobacter subterraneus subsp. tengcongensis MB4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q8RBI8_CALS4 Publication Abstract from PubMed PriB is one of the components of the bacterial primosome, which catalyzes the reactivation of stalled replication forks at sites of DNA damage. The N-terminal domain of the PriB protein from the thermophilic bacterium Thermoanaerobacter tengcongensis (TtePriB) was expressed and its crystal structure was solved at the atomic resolution of 1.09 A by direct methods. The protein chain, which encompasses the first 104 residues of the full 220-residue protein, adopts the characteristic oligonucleotide/oligosaccharide-binding (OB) structure consisting of a five-stranded beta-barrel filled with hydrophobic residues and equipped with four loops extending from the barrel. In the crystal two protomers dimerize, forming a six-stranded antiparallel beta-sheet. The structure of the N-terminal OB domain of T. tengcongensis shows significant differences compared with mesophile PriBs. While in all other known structures of PriB a dimer is formed by two identical OB domains in separate chains, TtePriB contains two consecutive OB domains in one chain. However, sequence comparison of both the N-terminal and the C-terminal domains of TtePriB suggests that they have analogous structures and that the natural protein possesses a structure similar to a dimer of two N-terminal domains. Dimeric structure of the N-terminal domain of PriB protein from Thermoanaerobacter tengcongensis solved ab initio.,Liebschner D, Brzezinski K, Dauter M, Dauter Z, Nowak M, Kur J, Olszewski M Acta Crystallogr D Biol Crystallogr. 2012 Dec;68(Pt 12):1680-9. doi:, 10.1107/S0907444912041637. Epub 2012 Nov 9. PMID:23151633 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Single-stranded DNA-binding protein 3D structures

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