housekeeping gene

constitutive gene expression

regulated gene expression

activation

repression

transcription factor

activator

repressor

regulatory site

positive regulation

negative regulation

DNA looping

enhancer

coactivator

corepressor

insulator

signal integration

operator

effector

polycistronic mRNA

operon

regulon

combinatorial control

recognition helix

helix-turn-helix motif

homeodomain motif

basic leucine zipper motif

basic helix-loop-helix motif

zinc finger motif

RNA interference (RNAi)

26S proteasome