Journal
CURRENT MICROBIOLOGY
Volume 46, Issue 4, Pages 235-240Publisher
SPRINGER-VERLAG
DOI: 10.1007/s00284-002-3840-4
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Acinetobacter calcoaceticus PHEA-2 is a phenol-degrading bacterium isolated from the wastewater from an oil refinery. A 10-kb XhoI fragment consisting of nine complete Open Reading Frames (ORFs) and one partial ORF was screened from a lambda library of PHEA-2 by Southern hybridization. The sequence analyses revealed that ORF2-ORF7, designated mphKLMNOP, are homologous to dmpKLMNOP of Pseudomonas sp. CF600 and mopKLMNOP of Acinetobacter calcoaceticus NCIB8250, sharing 38%-72% and 58.5%-93.5% respectively. The products encoded by dMP and mop genes convert phenol to catechol. The mph-operon and downstream ORFs; ORF9 and ORF10, sharing high identities to benM and benA, which encode ben-operon regulatory protein and benzoate 1,2-dioxygenase alpha subunit respectively, are separated by ORF8, whose function is unknown. The organization of the mph and ben operons is different from that described previously.
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