Development of the Micromonospora carbonacea var. africana ATCC 39149 bacteriophage pMLP1 integrase for site-specific integration in Micromonospora spp. 2003

Dylan C Alexander, and David J Devlin, and Duane D Hewitt, and Ann C Horan, and Thomas J Hosted
New Lead Discovery, Schering Plough Research Institute, 2015 Galloping Hill Road, K15-B425-MS4800, Kenilworth, NJ 07033, USA.

Micromonospora carbonacea var. africana ATCC 39149 contains a temperate bacteriophage, pMLP1, that is present both as a replicative element and integrated into the chromosome. Sequence analysis of a 4.4 kb KpnI fragment revealed pMLP1 att/int functions consisting of an integrase, an excisionase and the phage attachment site (attP). Plasmids pSPRH840 and pSPRH910, containing the pMLP1 att/int region, were introduced into Micromonospora spp. by conjugation from Escherichia coli. Sequence analysis of DNA flanking the integration site confirmed site-specific integration into a tRNAHis gene in the chromosome. The pMLP1 attP element and chromosomal bacterial attachment (attB) site contain a 24 bp region of sequence identity located at the 3' end of the tRNA. Integration of pMLP1-based plasmids in M. carbonacea var. africana caused a loss of the pMLP1 phage. Placement of an additional attB site into the chromosome allowed integration of pSPRH840 into the alternate attB site. Plasmids containing the site-specific att/int functions of pMLP1 can be used to integrate genes into the chromosome.

UI MeSH Term Description Entries
D008847 Micromonospora A genus of gram-positive bacteria that forms a branched mycelium. It commonly occurs as a saprophytic form in soil and aquatic environments. Micromonospora echinospora
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D010957 Plasmids Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS. Episomes,Episome,Plasmid
D011995 Recombination, Genetic Production of new arrangements of DNA by various mechanisms such as assortment and segregation, CROSSING OVER; GENE CONVERSION; GENETIC TRANSFORMATION; GENETIC CONJUGATION; GENETIC TRANSDUCTION; or mixed infection of viruses. Genetic Recombination,Recombination,Genetic Recombinations,Recombinations,Recombinations, Genetic
D002876 Chromosomes, Bacterial Structures within the nucleus of bacterial cells consisting of or containing DNA, which carry genetic information essential to the cell. Bacterial Chromosome,Bacterial Chromosomes,Chromosome, Bacterial
D004269 DNA, Bacterial Deoxyribonucleic acid that makes up the genetic material of bacteria. Bacterial DNA
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D005798 Genes, Bacterial The functional hereditary units of BACTERIA. Bacterial Gene,Bacterial Genes,Gene, Bacterial
D005822 Genetic Vectors DNA molecules capable of autonomous replication within a host cell and into which other DNA sequences can be inserted and thus amplified. Many are derived from PLASMIDS; BACTERIOPHAGES; or VIRUSES. They are used for transporting foreign genes into recipient cells. Genetic vectors possess a functional replicator site and contain GENETIC MARKERS to facilitate their selective recognition. Cloning Vectors,Shuttle Vectors,Vectors, Genetic,Cloning Vector,Genetic Vector,Shuttle Vector,Vector, Cloning,Vector, Genetic,Vector, Shuttle,Vectors, Cloning,Vectors, Shuttle

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