Review for Hun4221 Test 2

Review for Hun4221 Test 2 - Review for Hun4221 Test 2...

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Review for Hun4221 Test 2 Biotin Glyocprotein-avidin Binds irreversibly Raw egg whites-affect biotin status because its irreversible Cook egg and fine Biotin bound to lycine-biocytin o End products of digestion o Don’t usually absorb unless consuming in large amounts o Special enzyme-biotinidase-release biotin from lysine so we can absorb it and transport o As far as digestion, digest, release from lysine so we can absorb it o Will absorb some biocytin if consuming a lot, but like to absorb it in free form Food sources Sodium dep. Multivit transporter Bacteria synthesizes SOME but doenst affect status Most in blood is free or bound as protein URINE major route of excretion BISNORBIOTIN- MAJOR EXCRETORY PRODUCT OF BIOTIN EXCRETION Function o Coenzymatic, and non coenzymatic 4 carboxylases Enzymes are not active until it gets biotin Holo-carboxylase synthetase is what adds biotin
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o To carboxylase so it can be active o
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This note was uploaded on 06/16/2009 for the course HUN 4221 taught by Professor Shellnut during the Spring '09 term at University of Florida.

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Review for Hun4221 Test 2 - Review for Hun4221 Test 2...

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