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. 1989 May;171(5):2506–2512. doi: 10.1128/jb.171.5.2506-2512.1989

Nucleotide sequence and analysis of the plant-inducible locus pinF from Agrobacterium tumefaciens.

R H Kanemoto 1, A T Powell 1, D E Akiyoshi 1, D A Regier 1, R A Kerstetter 1, E W Nester 1, M C Hawes 1, M P Gordon 1
PMCID: PMC209927  PMID: 2708311

Abstract

Several loci on the tumor-inducing plasmid from Agrobacterium tumefaciens were transcriptionally activated in the presence of wounded plant tissue or extracts. The inducible virulence loci were required for efficient tumor formation. In contrast, the plant-inducible locus pinF was not observed to be absolutely essential for virulence. Mutants in pinF showed an attenuated virulence on a variety of dicotyledonous hosts, and this attenuation became more pronounced with decreasing numbers of bacterial cells in the inoculum. The DNA sequence of a 5.5-kilobase region which included the pinF locus from the octopine-type tumor-inducing plasmid A6 was determined. Four open reading frames consistent with the observed transcription of pinF were observed. Two of the open reading frames, pinF1 and pinF2, coded for polypeptides with relative molecular weights of 47,519 (pinF1) and 46,740 (pinF2). A comparison of the amino acid sequences of pinF1 and pinF2 indicated that they were similar to each other and to known polypeptide sequences for cytochrome P-450 enzymes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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