Lecture 22 Flashcards
Phosphate (PO4-) groups are
often transferred as a way to regulate substrate function
Kinases do what
transfer PO4- to targets (phosphorylation)
Phosphatases do what
remove PO4- from targets
Enzyme catalytic domains are
highly conserved, used over and over again
What is enzyme regulation
enzyme control by binding other molecules or posttranslational modification such as phosphorylation
Example of enzyme regulation
allosteric change
What is allosteric change
change in the shape of one region of the protein that affects the change in the shape of another region allowing regulation of activity
Anabolic pathways are
creation of complex molecules from simpler ones
Anabolic pathways result in
endergonic, energy goes into system
+∆G energy
Catabolic pathways
breaking down molecules into smaller ones
Catabolic pathways result in
exergonic, energy releases from system
-∆G
Glucose most reduced form
starch
glucose most oxidized form
CO2+H2O
Biological oxidations are
highly exergonic (energy releases from system)
Carbs, fats, and proteins are what to release energy
oxidized
