Guzzo CR, Nagem RAP, Barbosa JARG, Farah CS. Structure of Xanthomonas axonopodis pv. citri YaeQ reveals a new compact protein fold built around a variation of the PD-(D/E)XK nuclease motif.
Proteins 2007;
69:644-51. [PMID:
17623842 DOI:
10.1002/prot.21556]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The YaeQ family of proteins are found in many Gram-negative and a few Gram-positive bacteria. We have determined the first structure of a member of the YaeQ family by X-ray crystallography. Comparisons with other structures indicate that YaeQ represents a new compact protein fold built around a variation of the PD-(D/E)XK nuclease motif found in type II endonucleases and enzymes involved in DNA replication, repair, and recombination. We show that catalytically important residues in the PD-(D/E)XK nuclease superfamily are spatially conserved in YaeQ and other highly conserved YaeQ residues may be poised to interact with nucleic acid structures.
Collapse