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Default High-level expression of uniformly 15N-labeled hen lysozyme in Pichia pastoris and id

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.

Related Articles 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.

FEBS Lett. 1999 Apr 1;448(1):33-7

Authors: Mine S, Ueda T, Hashimoto Y, Tanaka Y, Imoto T

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.

PMID: 10217404 [PubMed - indexed for MEDLINE]



Source: PubMed
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