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Plasmid. 1992 Mar;27(2):130-40.

Cloning and DNA sequence of the Mycobacterium fortuitum var fortuitum plasmid pAL5000.

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Department of Microbiology, University of Texas Health Center, Tyler 75710.


The complete nucleotide sequence of the Mycobacterium fortuitum var fortuitum plasmid pAL5000 has been determined. Computer analysis of this 4821-bp plasmid for protein coding regions, based on mycobacterial codon usage preferences, reveals the presence of two putative protein coding regions immediately downstream from typical mycobacterial promoter and ribosome binding sites. Both open reading frames, ORF1 and ORF2, produced proteins with the predicted respective sizes previously shown in minicell expression experiments [A. Labidi et al. (1985) FEMS Microbiol. Lett. 30, 221-225]. ORF1 encodes a putative 20-kDa basic protein with characteristics of a DNA binding protein involved in plasmid DNA replication. ORF2 encodes a 67-kDa protein with an amino-terminal sequence suggestive of a transported protein and a possible transmembrane anchor near its carboxyl-terminal. The current sequence and its analysis are more consistent with the minicell expression experiments than the previously published sequence of the pAL5000 plasmid [J. Rauzier et al. (1988) Gene 71, 315-321].

[Indexed for MEDLINE]

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