the promoter region for the ctc gene is interesting because transcription is initiated at or near the same position by both sigma 37 rna polymerase ( e sigma 37 ) , a minor form in growing cells , and sigma 29 rna polymerase ( e sigma 29 ) , a form which appears approximately 2 h after the initiation of sproulation .
C0040649
transcription
C0035681
rna polymerase