lecturenoteschap7-10-2slides

lecturenoteschap7-10-2slides - BCMB 3100 Chapter 7...

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1 BCMB 3100 - Chapter 7 (Partial notes. The bulk of this chapter will be learned through your group activity and through the web-based t t i l SEE HANDOUTS! tutorial. SEE HANDOUTS!) Cofactors Essential ions Coenzymes Cosubstrates Prosthetic groups Coenzymes structure/function/active group Coenzymes Some enzymes require cofactors for activity Apoenzyme + Cofactor Holoenzyme (1) ______________ (mostly metal ions) (2) ____________ (organic compounds) (protein only) (active) (inactive)
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2 Coenzymes act as group -transfer reagents _________ • Hydrogen, electrons, or other groups can be transferred • Two types of coenzymes: metabolite coenzymes vitamin-derived coenzymes Fig 7.1 Types of cofactors Ca ++ K + Mg ++ Fe-S center zinc copper * ATP * SAM UDP-sugar * NAD + /NADP + * FMN/FAD * TPP * PLP Mn ++ cobalt * tetrahydrofolate * CoA * ubiquinone * protein coenzymes * Biotin * adenosyl/methyl- cobalamin * Lipoic acid/ lipoamide See Table 7.2 as useful summary table for coenzymes
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This note was uploaded on 12/03/2011 for the course CHEM 3100 taught by Professor Dervartanian during the Fall '09 term at UGA.

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lecturenoteschap7-10-2slides - BCMB 3100 Chapter 7...

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