If transporting a substrate across an intracellular membrane is the limiting factor for an enzyme -catalyzed reaction, then the regulatory process would most likely be altering the number of enzymes regulation by sequestering an enzyme into a subcellular organelle binding the enzyme to a regulatory protein binding of an enzyme to a substrate Which statement is false about rapid protein turnover? the entire cycle involves flux of substrates and products through proteases and ribosomes rapid protein turnover inhibits the responsiveness of cells to changing conditions the process is energetically expensive for cells proteins are targeted for degradation at differnt rates based on the sequence of their N-terminus proteins with a relatively short half-life reach new steady state levels much faster The matrix metalloproteinase family of proteases is inhibited by tissue specific inhibitors of metalloprteinases (TIMPs). This is an example of protein sequestration bunding an enzyme to a substrate changing the amount of transcript altering the total enzyme concetration O regulatory protein binding Features of course regulatory control of enzyme activity include generally alters total enzyme concentration rather than turnover number require significant energy input delayed response to stimuli, minutes, hours or days fast response to stimuli- microseconds to seconds heterotropic ligand binding or feedback inhibition