I. Overview of Regulation 8.1 Major modes of regulation II. Regulation of Enzyme Activity (Posttranslational level regulation) 8.2 Noncovalent enzyme inhibition 酶活的非共价抑制 8.3 Covalent Modification of Enzyme 酶的共价修饰 III. DNA-Binding Proteins and Regulation of Transcription by Negative and Positive Control (Transcriptional level regulation) 转录水平调控