Which are the FIVE main series of apoproteins that have been identified?     "apoA, apoB, apoC, apoD, and apoE"     "apoA, apo(a), apoB, apoC and apoE"     "apoA, apoB, apoC, apo E, and apoL"     "apoB, apoC, apoD, apoE and apoM"

Which of the following is a valid pathway? a) growth factors trigger cyclin D production, cyclin D promotes Cdk4 and Cdk6 which trigger the replication of DNA b) growth factors trigger cyclin E production, cyclin E promotes Cdk1 and Cdk2 which trigger the replication of DNA c) Aurora and Cdk1 trigger cyclin E production, cyclin E triggers cyclin D which promotes Cdk4 and Cdk6 which trigger the replication of DNA d) none of these

What are the function of lysine and tryptophan?

3. The table on the last page compares for each of four different proteolytic enzymes the chemical bonding structure of a classical substrate with the structures of two competitive inhibitors. For each substrate structure an arrow indicates the position of the scissile bond, i.e., the bond that is cleaved through catalytic action. For each enzyme, one of the inhibitors is a classical competitive inhibitor while the other is a transition-state inhibitor analog. While ordinary competitive inhibitors are associated with (dissociation) inhibitor equilibrium con- stants of ~10-3 to 10-6 M, transition-state analogs exhibit inhibitor constants ≤ 10-⁹ M. (a) For each enzyme draw a circle around those parts of the substrate that account for specificity of substrate recognition. (b) For each enzyme identify the transition-state inhibitor analog by drawing a circle around it and give a brief explanation of why it mimics the structure of the transition-state species. (c) Draw a "generic"…