General Protein Functions Flashcards
Enzymes
catalyze covalent bond breakage/formation
Structural Proteins
provide mechanical support to cells and tissues
Transport Proteins
carry small molecules/ions
Motor Proteins
generate movement in cells and tissues
Storage Proteins
store amino acids/ions
Signal Proteins
carry extracellular signals from cell to cell
Receptor Proteins
detect signals and transmit them to the cell’s response machinery
Transcription Regulators
bind to DNA to switch genes on/off
Special-Purpose Proteins
highly variable functions
Alcohol Dehydrogenase
enzyme
makes the alcohol in wine
Pepsin
enzyme
degrades dietary proteins in the stomach
Ribulose Bisphosphate Carboxylase
enzyme
helps convert CO2 into sugars in plants
DNA Polymerase
enzyme
copies DNA
Protein Kinase
enzyme
adds a phosphate to a protein
Collagen
structural protein
common constituent of ECM
forms fibers in tendons and ligaments
Elastin
structural protein
common constituent of ECM
forms fibers in tendons and ligaments
Tubulin
structural protein
forms long, stiff microtubules inside cell
Actin
structural protein
forms filaments that support plasma membrane