Overexpression, crystallization, and preliminary x-ray crystallographic analysis of the alanine racemase from enterococcus faecalis v583

Amit Priyadarshi, Eun Hye Lee, Min Woo Sung, Jae Hee Kim, Min Je Ku, Eunice Eunkyeong Kim, Kwang Yeon Hwang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Alanine racemase, a bacterial enzyme belonging to the fold-type III group of pyridoxal 5′-phosphate (PLP)-dependent enzymes, has been shown to catalyze the interconversion between L- and D-alanine. The alanine racemase from the pathogenic bacterium Enterococcus faecalis v583 has been overexpressed in E. coli and was shown to crystallize an enzyme at 295 K, using polyethylene glycol (PEG) 8000 as a precipitant. X-ray diffraction data to 2.5 Å has been collected using synchrotron radiation. The crystal is a member of the orthorhombic space group, C2221, with unit cell parameter of a=94.634, b=156.516, c=147.878 Å, and α=β=γ=90°. Two or three monomers are likely to be present in the asymmetric unit, with a corresponding Vm of 3.38 Å3 Da-1 and 2.26 Å3 Da-1 and a solvent content of 63.7% and 45.5%, respectively.

Original languageEnglish
Pages (from-to)55-58
Number of pages4
JournalJournal of Microbiology and Biotechnology
Volume18
Issue number1
Publication statusPublished - 2008 Jan 28

Keywords

  • Alanine racemase
  • Enterococcus faecalis
  • PLP
  • Preliminary x-ray analysis

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology
  • Microbiology
  • Bioengineering

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