Ri. Aminov et al., CLONING, SEQUENCING AND COMPLEMENTATION ANALYSIS OF THE RECA GENE FROM PREVOTELLA-RUMINICOLA (VOL 144, PG 53, 1996), FEMS microbiology letters, 145(3), 1996, pp. 473-473
Degenerate PCR primers based on conserved RecA protein regions were us
ed to amplify a portion of recA from Prevotella ruminicola strain 23,
which was used as a probe to isolate the full-length recA gene from th
e P. ruminicola genomic library. The P. ruminicola recA gene encoded a
protein of 340 amino acids with a molecular mass of 36.81 kDa. P. rum
inicola RecA was highly similar to other RecA proteins and most closel
y resembled that of Bacteroides fragilis (75% identity). It alleviated
the methyl methanesulfonate and mitomycin C sensitivities of Escheric
hia coli recA mutants, but did not restore the resistance to UV-light
irradiation. Mitomycin C treatment of otherwise isogenic E. coli strai
ns showed a higher level of prophage induction in a recA harboring lys
ogen.