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Stewart Cole

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An unmodified form of the ColE2 lysis protein, an envelope lipoprotein, retains reduced ability to promote colicin E2 release and lysis of producing cells

Site-directed mutagenesis was used to replace the codon for the N-terminal cysteine residue of pColE2-P9-encoded mature lysis protein (CelB) by an arginine codon. In contrast to the wild-type CelB protein, the product of the mutated gene, which has an alte ...

1987

Nucleotide sequence and comparative analysis of the human papillomavirus type 18 genome. Phylogeny of papillomaviruses and repeated structure of the E6 and E7 gene products.

The complete nucleotide sequence and genomic organization of human papillomavirus type 18, associated with cervical cancer, has been established. A detailed comparative analysis was undertaken leading to the identification of a number of features specific ...

1987

Molecular characterization of the resolvase gene, res, carried by a multicopy plasmid from Clostridium perfringens: common evolutionary origin for prokaryotic site-specific recombinases

Clostridium perfringens strain CPN50 harbours a 10.2 kb plasmid known as pIP404 which, in addition to a set of UV-inducible genes involved in bacteriocin production, carries res, a gene probably encoding a site-specific recombinase. The RES protein is high ...

1987

Evolution of the enterobacterial sulA gene: a component of the SOS system encoding an inhibitor of cell division

The LexA-regulated sulA (sfiA) gene of Escherichia coli encodes an unstable protein which inhibits cell division. By determining the nucleotide sequences of the corresponding genes from the related bacteria Salmonella typhimurium, Enterobacter aerogenes an ...

1987

Nucleotide sequence and comparative analysis of the frd operon encoding the fumarate reductase of Proteus vulgaris: Extensive sequence divergence of the membrane anchors and absence of an frd-linked ampC cephalosporinase gene

The fumarate reductase of Escherichia coli is a bioenergetically important membrane-bound flavoenzyme consisting of four subunits. A and B comprise a membrane-extrinsic catalytic domain whereas C and D are hydrophobic polypeptides which link the catalytic ...

1987

Molecular genetic analysis of cephalosporinase production and its role in beta-lactam resistance in clinical isolates of Enterobacter cloacae.

Two strains of Enterobacter cloacae were isolated from a patient before (strain MHN1) and during (strain MHN2) treatment with moxalactam and gentamicin. Strain MHN1 exhibited inducible ampC cephalosporinase production. In contrast, strain MHN2 expressed th ...

1987

Characterization of a bacteriocinogenic plasmid from Clostridium perfringens and molecular genetic analysis of the bacteriocin-encoding gene.

Stewart Cole

The bacteriocinogenic plasmid pIP404 from Clostridium perfringens was isolated and cloned in Escherichia coli, and its physical map was deduced. Expression of the bcn gene, encoding bacteriocin BCN5, is inducible by UV irradiation of C. perfringens and thu ...

1986

beta-Galactosidase and alkaline phosphatase do not become extracellular when fused to the amino-terminal part of colicin N

Stewart Cole

A series of plasmids encoding hybrid proteins comprising various lengths of the NH2-terminal region of colicin N coupled to almost complete beta-galactosidase or alkaline phosphatase polypeptides was constructed by transposon mutagenesis of ColN plasmid de ...

1986

A single point mutation responsible for c-mos polymorphism in cancer patients.

Stewart Cole

A rare EcoRI restriction fragment length polymorphism (RFLP) in the 3' end of the human c-mos locus has been identified in DNA from patients with breast tumors, esophageal carcinomas and leukemias. Until now, this RFLP has not been found in normal populati ...

1987

Inducible cephalosporinase production in clinical isolates of Enterobacter cloacae is controlled by a regulatory gene that has been deleted from Escherichia coli.

Cephalosporin hyper-resistant Enterobacter cloacae strains are isolated with increasing frequency from hospital infections. Resistance is principally due to the chromosomal ampC gene encoding a cephalosporinase. In contrast to Escherichia coli which expres ...

1986