Kim S, Joo S, Yoon S, Kim S, Moon J, Ryu Y, Kim KK, Kim TD. Purification, crystallization and preliminary crystallographic analysis of Est-Y29: a novel oligomeric beta-lactamase.
Acta Crystallogr Sect F Struct Biol Cryst Commun 2009;
65:310-2. [PMID:
19255492 DOI:
10.1107/s1744309109005442]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Accepted: 02/16/2009] [Indexed: 11/10/2022]
Abstract
beta-Lactam antibiotics such as penicillins and cephalosporins have a four-atom ring as a common element in their structure. The beta-lactamases, which catalyze the inactivation of these antibiotics, are of great interest because of their high incidence in pathogenic bacteria. A novel oligomeric class C beta-lactamase (Est-Y29) from a metagenomic library was expressed, purified and crystallized. The recombinant protein was expressed in Escherichia coli with an N-terminal 6xHis tag and purified to homogeneity. EstY-29 was crystallized and X-ray intensity data were collected to 1.49 A resolution using synchrotron radiation.
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