Phosphorylation is the addition of a phosphate (PO4) group to a molecule, usually a protein. Many enzymes and receptors are switched “on” or “off” by phosphorylation and dephosphorylation. The addition of a phosphate to a protein can change a protein from hydrophobic (“water-hating”) to hydrophilic (“water-loving”). One
Figure 10-4 Phosphates and muscle contraction.
use of phosphorylation is when certain light-sensitive cells of the retina use phosphorylation for signaling the presence of light.
Phosphorus as a Blood Buffer
Phosphorus also helps to maintain normal acid-alkaline balance (pH) in its role as one of the body’s most important buffer systems. Dihydrogen phosphate absorbs acids produced by metabolic activity and becomes phosphoric acid.
Figure 10-4 Phosphates and muscle contraction.
use of phosphorylation is when certain light-sensitive cells of the retina use phosphorylation for signaling the presence of light.
Phosphorus as a Blood Buffer
Phosphorus also helps to maintain normal acid-alkaline balance (pH) in its role as one of the body’s most important buffer systems. Dihydrogen phosphate absorbs acids produced by metabolic activity and becomes phosphoric acid.
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