5xma

Crystal structure of AsfvPolX in complex with DNA enzyme at P43212 space group

spinqualitylabelsall models 5xma, resolution 3.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5xma is a 4 chain structure with sequence from African swine fever virus BA71V and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function DPOLX_ASFB7 Error-prone polymerase lacking a proofreading 3'-5' exonuclease which plays a role in viral DNA repair. Specifically binds intermediates in the single-nucleotide base-excision repair process. Also catalyzes DNA polymerization with low nucleotide-insertion fidelity. Together with the viral DNA ligase, fills the single nucleotide gaps generated by the AP endonuclease. Publication Abstract from PubMed In addition to storage of genetic information, DNA can also catalyze various reactions. RNA-cleaving DNAzymes are the catalytic DNAs discovered the earliest, and they can cleave RNAs in a sequence-specific manner. Owing to their great potential in medical therapeutics, virus control, and gene silencing for disease treatments, RNA-cleaving DNAzymes have been extensively studied; however, the mechanistic understandings of their substrate recognition and catalysis remain elusive. Here, we report three catalytic form 8-17 DNAzyme crystal structures. 8-17 DNAzyme adopts a V-shape fold, and the Pb(2+) cofactor is bound at the pre-organized pocket. The structures with Pb(2+) and the modification at the cleavage site captured the pre-catalytic state of the RNA cleavage reaction, illustrating the unexpected Pb(2+)-accelerated catalysis, intrinsic tertiary interactions, and molecular kink at the active site. Our studies reveal that DNA is capable of forming a compacted structure and that the functionality-limited bio-polymer can have a novel solution for a functional need in catalysis. Crystal structure of an RNA-cleaving DNAzyme.,Liu H, Yu X, Chen Y, Zhang J, Wu B, Zheng L, Haruehanroengra P, Wang R, Li S, Lin J, Li J, Sheng J, Huang Z, Ma J, Gan J Nat Commun. 2017 Dec 8;8(1):2006. doi: 10.1038/s41467-017-02203-x. PMID:29222499 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also DNA polymerase 3D structures

Proteopedia Page Contributors and Editors (what is this?)

OCA