Overexpression, purification, and preliminary X-ray crystallographic studies of methionine sulfoxide reductase B from Bacillus subtilis

Ae Kyung Park, Youn Jae Shin, Jin Ho Moon, Young Kwan Kim, Kwang Yeon Hwang, Young Min Chi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The peptide methionine sulfoxide reductases (Msrs) are enzymes that catalyze the reduction of methionine sulfoxide back to methionine. Because of two enantiomers of methionine sulfoxide (S and R forms), this reduction reaction is carried out by two structurally unrelated classes of enzymes, MsrA (E.C. 1.8.4.11) and MsrB (E.C. 1.8.4.12). Whereas MsrA has been well characterized structurally and functionally, little information on MsrB is available. The recombinant MsrB from Bacillus subtilis has been purified and crystallized by the hanging-drop vapor-diffusion method, and the functional and structural features of MsrB have been elucidated. The crystals belong to the trigonal space group P3, with unit-cell parameters a=b=136.096, c=61.918 Å, and diffracted to 2.5 Å resolution using a synchrotron-radiation source at Pohang Light Source. The asymmetric unit contains six subunits of MsrB with a crystal volume per protein mass (VM) of 3.37 Å3 Da-1 and a solvent content of 63.5%.

Original languageEnglish
Pages (from-to)59-62
Number of pages4
JournalJournal of microbiology and biotechnology
Volume18
Issue number1
Publication statusPublished - 2008 Jan 28

Keywords

  • Bacillus subtilis
  • Crystallization
  • Methionine sulfoxide reductase B

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

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