Date post: | 29-Jul-2015 |
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Interlink between Metabolic pathways
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Dr. Vijay Marakala, MBBS, MD.
Senior LecturerBIOCHEMISTRY
IMS, MSU.
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Metabolism
Sum of all the chemical transformations taking place in a cell or organism, occurs through a
series of enzyme-catalyzed reactions that constitute
metabolic pathways.
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METABOLIC PATHWAY
O Each step in the pathway is catalyzed by a SPECIFIC ENZYME frequently aided by ancillary substances called COENZYMES and COFACTORS
A series of LINKED REACTIONS
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TYPES OF METABOLIC PATHWAYS
O Catabolic (degradation) pathways
O Anabolic (biosynthesis) pathways
O Amphibolic pathways
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STAGES OR PHASES OF
METABOLISM
O Digestion in the gastrointestinal tract
O Absorbed , catabolized to smaller components, and ultimately oxidized to CO2
O Reducing equivalents releasing energy through ETC
PRIMARY
SECONDARY OR INTERMEDIARY AND
TERTIARY METABOLISM
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Precursor Intermediates Product
METABOLIC PATHWAY
Metabolites
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CARBOHYDRATES
PROVISION OF ENERGY
LIPIDS
PROVISION OF ENERGY
PROTEINS
BODY BUILDING PURPOSE
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THE THREE STAGES OF
METABOLISM
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THE THREE STAGES OF
METABOLISM
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Intermediary metabolism
Combined activities of all the metabolic pathways
that interconvert precursors, metabolites,
and products
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CatabolismAnabolism
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If there is excess in energy - converted to building
blocks of proteins, carbohydrates and lipids
CatabolismAnabolism
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THANK YOU