it is suggested that the leu-3 alpha-ipm regulatory element may facilitate transcription of the genetically dispersed cistrons either by imposing specificity on ribonucleic acid polymerase for structurally similar promoters adjacent to each of the cistrons or by `` '' opening '' '' promoters after interaction with nearly identical stretches of deoxyribonucleic acid near each of the structural genes .
C0040649
transcription
C0035681
ribonucleic acid polymerase