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Biochemistry Flashcards

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8488847276Gsstimulates adenylate cyclase, which increases levels of cAMP in the cell0
8488851303Giinhibits adenylate cyclase, which decreases levels of cAMP in the cell1
8488856531Gqactivates phospholipase C, which cleaves a phospholipid from the membrane to form PIP2. PIP2 is then cleaved into DAG and IP3. IP3 can open calcium channels in the ER, increasing Calcium levels in the cell.2
8488883858G protein-coupled receptorslarge family of integral membrane proteins involved in signal transduction.3
8488889974Enzyme-linked receptorsmembrane receptors with a catalytic activity. 3 primary protein domains: membrane-spanning, ligand-binding and catalytic4
8488937159Electrophoresismoves proteins according to charge and sz5
8488950515Native PAGEmass-to-charge or mass-to-sz ratios. Protein can be recovered.6
8488959919SDS- PAGESeparates proteins on the basis of molecular mass alone. SDS covers entire protein in negative charge7
8488972867What is the average molar mass of one amino acid?100 daltons or 100g/mol8
8488980470Isoelectric focusingseparating on the basis of pI. Say you have a protein with the pI of 9(basic)9
8489012204When is chromatography preferred over electrophoresis?When large amounts of protein are being separated10
8489078129X-ray crystallographythe most reliable and common method of identifying protein structure(75%). measures electron density on an extremely high resolution scale and can also be used for nucleic acids.11
8489088885NMR spectroscopyto find 25% of protein structures-12
8489097094Edman degradationsmall proteins best analyzed. 50-70 aa. selectively and sequentially removes the N-terminal aa which can then be analyzed via mass spec13

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