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What is locally regulated in the blood by the active form of vitamin D?
calcium
What is The protein portion of an enzyme that is lacking a cofactor is called?
An apoenzyme or an apoprotein is the protein portion of an enzyme that lacks a cofactor. It becomes active when it combines with a cofactor to form a holoenzyme or a holoprotein.
What is apoenzyme?
Apoenzyme is the protein portion of an enzyme, which is inactive without its cofactor or coenzyme. The binding of the cofactor or coenzyme to the apoenzyme forms the active enzyme, allowing it to catalyze a specific biochemical reaction.
What is pyrodoxal phosphate?
Pyridoxal phosphate is the active form of vitamin B6 involved in numerous enzymatic reactions in the body, particularly in amino acid metabolism. It serves as a cofactor for enzymes that catalyze important biochemical reactions, including the synthesis of neurotransmitters and the conversion of amino acids.
What is a non-protein helper of an enzyme molecule called?
A non-protein helper of an enzyme molecule is called a cofactor. Cofactors can be either inorganic ions (like metal ions) or organic molecules (like coenzymes) that assist enzymes in catalyzing chemical reactions.
What are the component of a holoenzyme?
A holoenzyme consists of an apoenzyme (protein component) and a cofactor (non-protein component). The apoenzyme alone is inactive, but once combined with its cofactor, it becomes an active holoenzyme capable of catalyzing a specific biological reaction.
How is vitamin A taken?
Supplements may contain either the active or precursor forms of vitamin A. The active form may be more desirable for those who may have some difficulty in converting the carotenoids into the active vitamin.
What is the function of zinc in the active site of the enzyme carboxypeptidase?
Zinc serves as a cofactor in the active site of carboxypeptidase by stabilizing the reaction intermediate during peptide cleavage. It acts as a Lewis acid, facilitating the nucleophilic attack on the peptide bond. Zinc also helps orient the substrate in the active site for optimal binding and catalysis.
What is the active form of Vitamin D?
Calcitriol
What contain active vitamin a?
French Fries.
What foods contain active vitamin A?
French Fries.
Does the liver synthesize vitamin D?
No, the liver does not synthesize vitamin D. The liver's role in vitamin D metabolism is to hydroxylate vitamin D to form calcidiol (25-hydroxyvitamin D3), which is then further metabolized in the kidneys to its active form, calcitriol.
