[Protein engineering of uridine phosphorylase from Escherichia coli K-12. I. Cloning and expression of uridine phosphorylase genes from Klebsiella aerogenes and Salmonella typhimurium in E. coli]. / Belkovaia inzheneriia uridinofosforilazy iz Escherichia coli K-12. I. Klonirovanie i ékspressiia v E. coli genov uridinofosforilaz iz Klebsiella aerogenes i Salmonella typhimurium.
Bioorg Khim
; 24(5): 381-7, 1998 May.
Article
in Ru
| MEDLINE
| ID: mdl-9661793
ABSTRACT
Genes of uridine phosphorylases (udp) from Klebsiella aerogenes and Salmonella typhimurium were cloned and expressed. Highly effective producer strains of the corresponding proteins were constructed. Enzymic properties of the UPases obtained were studied and compared with those from the Escherichia coli enzyme. Mutant forms of UPase from E. coli (D5E, D5N, D5A) were prepared by site-directed mutagenesis techniques. It was shown that the Asp5 residue plays an insignificant role in the formation of the active form of the protein.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Salmonella typhimurium
/
Uridine Phosphorylase
/
Gene Expression Regulation, Enzymologic
/
Escherichia coli
/
Klebsiella pneumoniae
Language:
Ru
Journal:
Bioorg Khim
Year:
1998
Document type:
Article
Affiliation country:
Rusia