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. 2004 Mar;48(3):930–939. doi: 10.1128/AAC.48.3.930-939.2004

TABLE 4.

Clavulanic acid production by single and double mutants of ORFs located in the paralogue gene cluster

Wild type or mutant Clavulanic acid produceda (% relative to wild type)
SA medium Soy medium
Wild type 100 100
ceaS2-Fs 0 5-13
ΔceaS1::apr 17-63 2-63
ceaS2-Fs/ΔceaS1::apr 0 0
bls1::tsr 103-162 107-173
bls1::tsr/bls2::apr 0 0
oat1::neo 30-154 57-145
oat1::neo/oat2::apr 12-62 31-67
a

The amount of clavulanic acid produced after 96 h of growth was measured by HPLC analysis.