'Committed step' presentation slideshows

BIOCHEMISTRY LECTURES

BIOCHEMISTRY LECTURES. Figure 10-2 2. Stages in the extraction of energy from foodstuffs. Enzyme is inhibited by malonyl CoA! Why?. heart muscle kidney brain. 1. Synthesis takes place in the cytosol, in contrast with degradation, which occurs in the mitochondrial matrix.

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Lecture 25

Lecture 25. Quiz Monday Pentose Phosphate Pathway This lecture is for WED. Quiz Friday on TCA cycle Pyruvate Dehydrogenase Complex (PDC). 3rd stage: carbon-carbon bond cleavage and formation reactions. Conversion of three C5 sugars to two C6 sugars and one C3 (GAP)

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Introductions

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Fatty Acid Metabolism

Fatty Acid Metabolism. Fatty Acid Metabolism. Why are fatty acids important to cells? fuel molecules stored as triacylglycerols building blocks phospholipids glycolipids precursors of hormones and other messengers used to target proteins to membrane sites. Fatty Acid Metabolism.

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Current updates and evolving concepts on Cellulose Biosynthesis in plants

Current updates and evolving concepts on Cellulose Biosynthesis in plants. Debarati Basu Cell Wall Seminar. Outline. What genes involved in cellulose biosynthesis? Which compartment is involved in cellulose biosynthesis?

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Regulation of Metabolism

Regulation of Metabolism. FCSN 543 Advanced Nutritional Biochemistry Dr. David L. Gee. Characteristics of Regulatory Enzymes. Catalyze a rate-limiting step Catalyze a committed step Early step unique to a pathway Irreversible step Requires energy

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Glycolysis Gluconeogenesis

Glycolysis Gluconeogenesis. One of best characterized pathways Characterized in the first half of 20th century Glucose --> 2 pyruvates + energy Strategy add phosphoryl groups to glucose convert phosphorylated intermediates into compounds with high phosphate group-transfer potentials

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PRPP synthetase

PRPP synthetase. Nucleoside phosphorylases. Phosphoribosyl transferases. The committed step of de novo purine nucleotide biosynthesis. Phosphoribosylamine synthase: cooperativity with respect to PRPP concentration & product inhibition. Outline of de novo purine nucleotide biosynthesis.

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Nucleotide Structure

Nucleotide Structure. Sugars. Sugar + base = nucleoside. Sugar + base + phosphate(s) = nucleotide. Bases. De Novo Purine Nucleotide Synthesis. Begin with ribose 5-phosphate Base constructed by series of reactions that contribute carbon and nitrogen atoms. Synthesis Of PRPP.

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Chapter 5 (part 4)

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Enzyme Regulation

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The Oxidative Steps of the Pentose Phosphate Pathway

The Oxidative Steps of the Pentose Phosphate Pathway. Mistake in book NOT reversible. Figure 22.23 The glucose-6-phosphate dehydrogenase reaction is the committed step in the pentose phosphate pathway. The three most energy consuming Reactions of glycolysis are replaced in

629 views • 9 slides