Use of amber suppressors to investigate the thermostability of Bacillus licheniformis alpha-amylase. Amino acid replacements at 6 histidine residues reveal a critical position at His-133.

Abstract excerpt

A set of 12 Escherichia coli suppressor tRNAs, inserting different amino acids in response to an amber codon, has been used to create rapidly numerous protein variants of a thermostable amylase; by site-directed mutagenesis, amber mutations were first introduced into Bacillus licheniformis alpha-amylase gene at position His35, His133, His247, His293, His406, or His450; genes carrying one or two amber mutations...

Topics

Share this publication in a Topic to start or enrich a Post.

• Share to Amino Acid Sequence
• Share to Cloning, Molecular