Escherichia coli bacteriophage T1 DNA methyltransferase appears to interact with Escherichia coli enolase.
Biol Chem
; 379(4-5): 621-3, 1998.
Article
in En
| MEDLINE
| ID: mdl-9628368
ABSTRACT
Infection of Escherichia coli cells with bacteriophage T1 induces synthesis of a bacteriophage-specific DNA methyltransferase (M.EcoT1, EC No 2.1.1.72) with a specificity for adenine residues in the sequence 5'-GATC-3'. Purification of M.EcoT1 allowed the determination of the coding sequence of the gene (Schneider-Scherzer et al., 1990). The peptide of the entire coding sequence was over-expressed as a histidine-hexapeptide tagged protein in E. coli. Affinity purification using a Ni2+ chelating (Ni-NTA) resin yielded a recombinant enzyme with almost the same enzymatic properties as the protein purified from T1 infected E. coli cells. Interestingly, in both purification procedures, a protein with a molecular weight of 50000 was found to copurify with M.EcoT1. The N-terminal amino acid sequence identified these proteins in both cases as E. coli enolase (EC No 4.2.1.11).
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phosphopyruvate Hydratase
/
T-Phages
/
Site-Specific DNA-Methyltransferase (Adenine-Specific)
/
Escherichia coli
Language:
En
Journal:
Biol Chem
Journal subject:
BIOQUIMICA
Year:
1998
Document type:
Article
Affiliation country:
Austria