High-level expression of uniformly 15N-labeled hen lysozyme in Pichia pastoris and identification of the site in hen lysozyme where phosphate ion binds using NMR measurements

Shouhei Mine, Tadashi Ueda, Yoshio Hashimoto, Yoshitsugu Tanaka, Taiji Imoto

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The non-enzymatic deamidation of Asn to Asp is known to occur in proteins and peptides and is accelerated by phosphate buffer [Tyler-Cross, R. and Schirch, V. (1991) J. Biol. Chem. 25, 22549-22556]. We attempted to identify the site in lysozyme where a phosphate ion binds by means of 1H-15N HSQC measurements of 15N-labeled lysozyme, which was successfully obtained using Pichia pastoris. As a result, we found that the phosphate ion was preferentially bound to Asn-103 in hen lysozyme. The method presented here may be useful for identifying the binding site of a protein with low molecular weight substances. Copyright (C) 1999 Federation of European Biochemical Societies.

Original languageEnglish
Pages (from-to)33-37
Number of pages5
JournalFEBS Letters
Volume448
Issue number1
DOIs
Publication statusPublished - Apr 2 1999

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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