Proteins play dynamic and structural function in a cell Three examples of protein functions Alcohol Catalysis: dehydrogenase oxidizes alcohols Almost all chemical reactions in a living to aldehydes or cell are catalyzed by protein enzymes. ketones -Transport: Some proteins transports various substances,such as oxygen,ions,and so Haemoglobin on. carries oxygen Information transfer: For example,hormones can bind DNA Insulin controls to regulate gene expression... the amount of sugar in the bloodProteins play dynamic and structural function in a cell • Three examples of protein functions – Catalysis: Almost all chemical reactions in a living cell are catalyzed by protein enzymes. – Transport: Some proteins transports various substances, such as oxygen, ions, and so on. – Information transfer: For example, hormones can bind DNA to regulate gene expression… Alcohol dehydrogenase oxidizes alcohols to aldehydes or ketones Haemoglobin carries oxygen Insulin controls the amount of sugar in the blood