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© 2008 W. H. Freeman and Company CHAPTER 14_2 Gluconeogenesis(포도당신생경로) Pentose Phosphate Pathway (오탄당 인산경로)

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Page 1: CHAPTER 14 2 - keris2.dl.cdn.cloudn.co.krkeris2.dl.cdn.cloudn.co.kr/KOCW/document/2016/pusan/limwoonki/4.pdf · Gluconeogenesis in mammals, major in liver (간) + minor in renal cortex

© 2008 W. H. Freeman and Company

CHAPTER 14_2

Gluconeogenesis(포도당신생경로)

Pentose Phosphate Pathway (오탄당인산경로)

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Gluconeogenesisin mammals,

major in liver (간) + minor in renal cortex (kidney), epithelial cells of small intestine, 신장피질, 작은창자의상피세포)

synthesized from lactate, pyruvate, TCA intermediate, glycerol, amino acids (exceptions, Leu, Lys)

(젖산, 비루브산, TCA회로중간산물, 글리세롤, 아미노산(L, K예외))

초산, 젖산, 프로피온산 (미생물)why?

[Glycogen] stored in liver & muscle are only enough for a half day(왜, 저장된글리코겐은반나절동안필요로하는에너지량에불과함)

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related pathways

cori cyclecatabolism of

amino acids

TCA cycleglyceroneogenesis

glyoxylate pathway

글리옥실산회로

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glycolysis; cytosol

Gluconeogenesis(포도당신생과정)in cytosol and

mitochondria(미토콘드리아)

how to make two rxs possible?

bypassingReactions (우회반응)

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중탄산

옥살로초산

비오틴

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카복시키나제 인산에놀피루브산

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biotin

CO2 carrier(이산화탄소운반체)

carboxybiotinylaslong swing arm(Chapt 16)(이산화탄소+비오틴는긴회전팔역할을함)

Page 11: CHAPTER 14 2 - keris2.dl.cdn.cloudn.co.krkeris2.dl.cdn.cloudn.co.kr/KOCW/document/2016/pusan/limwoonki/4.pdf · Gluconeogenesis in mammals, major in liver (간) + minor in renal cortex

two pathsfor PEP

synthesis

from

pyruvateor lactate

due to NADH+

Page 12: CHAPTER 14 2 - keris2.dl.cdn.cloudn.co.krkeris2.dl.cdn.cloudn.co.kr/KOCW/document/2016/pusan/limwoonki/4.pdf · Gluconeogenesis in mammals, major in liver (간) + minor in renal cortex
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Pentose phosphate pathway (오탄당인산경로)(phosphogluconate pathway, hexose monophosphate pathway)

(인산글루코산경로, 육탄당단일인산경로)prominent in active biosynthesis (fat..), cytosol

(생합성활발한세포의세포질에일어남)

oxidative pathway (산화단계)Glu 6P + 2NADP+ + H2O -> ribose 5-P + 2 NADPH, H + +CO2

Nonoxidative pathway (비산화단계)C5+C5→C3+C7C3+C7→C4+C6C4+C5 →C3+C6

total net 3G6P + 6 NADP + + 3H2O →6 NADPH, H ++3CO2 + 2F6P +GAP

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과산화물라디칼

미토콘드리아호흡, 이온화방사선, 설파제약, 제초제, 항말라리아약, 디비신

과산화수소

수산기자유라디칼

지질, 단백질, DNA의산화

글루타티온환원효소 (리닥타제)

6-인산-글루코노-델타-락톤

글루타티온페록시다제

카복시키나제

포도당-6-인산탈수소효소(디히드로게나제)

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nonoxidative reactions of pp shunt

산화적반응

리보스 5-인산

포도상 6-인산

자이룰로스 5-인산 에리트로스 4-인산

인산육탄당이성화효소(이소머라제)

과당 6-인산

3탄당인산이성화효소

과당 1,6 이인산탈인산화효소

Transketolase 트랜스케롤라제

자이룰로스 5-인산

Transaldolase 트랜스알돌라제

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알도스, 알도당받개

케도스, 케도당주개

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세도헵툴로스 7-인산

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프로톤화쉬프염

공명안정화

트랜스케돌라제

트랜스알돌라제

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Role of NADPH in regulating the partitioning of glu-6-p between glycolysis and pp pathway

해당작용과 인산오탄당경로를구분하는포도당 6-인산조절에관여하는 NADPH의역할

6-인산글루코노락톤