Crystal structure of the protein from Arabidopsis thaliana gene At5g06450, a putative DnaQ-like exonuclease domain-containing protein with homohexameric assembly
- Authors
- Smith, David W.; Han, Mi Ra; Park, Joon Sung; Kim, Kyung Rok; Yeom, Taeho; Lee, Ji Yeon; Kim, Do Jin; Bingman, Craig A.; Kim, Hyun-Jung; Jo, Kyubong; Han, Byung Woo; Phillips, George N., Jr.
- Issue Date
- Sep-2013
- Publisher
- WILEY-BLACKWELL
- Keywords
- 3-5 exonuclease; DnaQ-like exonuclease family; Arabidopsis thaliana; AtDECP; homohexamer; crystal structure
- Citation
- PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS, v.81, no.9, pp 1669 - 1675
- Pages
- 7
- Journal Title
- PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
- Volume
- 81
- Number
- 9
- Start Page
- 1669
- End Page
- 1675
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/14325
- DOI
- 10.1002/prot.24315
- ISSN
- 0887-3585
1097-0134
- Abstract
- Arabidopsis thaliana gene At5g06450 encodes a putative DnaQ-like 3-5 exonuclease domain-containing protein (AtDECP). The DnaQ-like 3-5 exonuclease domain is often found as a proofreading domain of DNA polymerases. The overall structure of AtDECP adopts an RNase H fold that consists of a mixed -sheet flanked by -helices. Interestingly, AtDECP forms a homohexameric assembly with a central six fold symmetry, generating a central cavity. The ring-shaped structure and comparison with WRN-exo, the best structural homologue of AtDECP, suggest a possible mechanism for implementing its exonuclease activity using positively charged patch on the N-terminal side of the homohexameric assembly. The homohexameric structure of AtDECP provides unique information about the interaction between the DnaQ-like 3-5 exonuclease and its substrate nucleic acids.Proteins 2013. (c) 2013 Wiley Periodicals, Inc.
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