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Presentation transcript:

Lecture 9 Slides rh

LIPID CATABOLISM

lipid menagerie phospholipid triglyceride

from McDonalds to Metabolism… fig17-1

from McDonalds to Metabolism…

The chylomicron: a lipoprotein fig17-2

mobilization of glycerol fig17-4

connecting the FA to CoA-SH fig17-5

connecting the FA to CoA-SH good leaving group fig17-5

fig 19-1

Carnitine: Charon* of the matrix! * you know, the boatman on the River Styx

Carnitine: Charon* of the matrix! * you know, the boatman on the River Styx

Transport of acyl-carnitine into the matrix rate-limiting step for oxidation of FAs fig17-6

oxidation of fatty acids: three steps, one new… fig17-7

b-oxidation: taking it two carbons at a time fig17-8

iterated metabolic pathway fig17-8

b-oxidation challenges… monounsaturated FA odd-carbon FA

b-oxidation challenges… monounsaturated FA polyunsaturated FA odd-carbon FA

b-oxidation of a mono- unsaturated fatty acid fig17-9

b-oxidation challenges… monounsaturated FA polyunsaturated FA odd-carbon FA

what about 3-carbon leftovers? fig17-11

what about 3-carbon leftovers? fig17-11

what about 3-carbon leftovers? fig 17-11

the coenzyme B12 reaction box17-2

deoxyadenosyl cobalomin or coenzyme B12 box17-2

box17-2

comparison of FA oxidation mitochondria vs. peroxisomes catalase box17-13

fatty acid metabolism in seeds… fig17-14

enzyme evolution in fatty acid oxidation one protein fig17-15

ketone bodies fig17-16

formation of ketone bodies from Ac-CoA fig17-18

formation of ketone bodies from Ac-CoA fig17-18

formation of ketone bodies from Ac-CoA fig17-18

formation of ketone bodies from Ac-CoA fig17-18

formation of ketone bodies from Ac-CoA fig17-18

metabolism of a ketone body fig17-19

fig17-19

fig17-19

fig17-19

liver synthesis of ketone bodies when TCA activity is low fig17-20