Vim li cas pentose phosphate txoj kev hu ua HMP shunt?
Vim li cas pentose phosphate txoj kev hu ua HMP shunt?

Video: Vim li cas pentose phosphate txoj kev hu ua HMP shunt?

Video: Vim li cas pentose phosphate txoj kev hu ua HMP shunt?
Video: Pentose Phosphate Pathway 2024, Kaum ib hlis
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Yog ib pentose phosphate txoj kev hu ua ib shunt ? Nws yog hu ua tus pentose phosphate kaw vim txoj kev tso cai rau carbon atoms los ntawm qabzib 6- phosphate mus taug kev luv luv (a shunt ) ua ntej lawv mus rau hauv Embden-Meyerhof (glycolytic) txoj kev.

Cov lus nug tseem yog, lub hom phiaj ntawm HMP shunt yog dab tsi?

Cov hexose monophosphate shunt , tseem hu ua pentose phosphate txoj kev, yog ib txoj hauv kev tshwj xeeb siv los tsim cov khoom tseem ceeb hauv lub cev rau ntau yam. Cov HMP swb yog lwm txoj hauv kev rau glycolysis thiab siv los tsim ribose-5-phosphate thiab nicotinamide adenine dinucleotide phosphate (NADPH).

Ib tug kuj yuav nug, qhov twg HMP shunt tshwm sim? Qhov chaw ntawm txoj kev • Cov enzymes nyob hauv cytosol. Cov ntaub so ntswg xws li daim siab, cov ntaub so ntswg adipose, qog adrenal, erythrocytes, testes & lactating mammary gland, yog cov nquag nquag hauv HMP swb.

Ib yam li ntawd, lub ntsiab lus ntawm txoj kev pentose phosphate yog dab tsi?

Cov pentose phosphate txoj kev feem ntau yog catabolic thiab ua haujlwm ua lwm yam qabzib oxidizing txoj kev rau tiam ntawm NADPH uas yuav tsum tau rau txo cov biosynthetic tshuaj xws li cov cholesterol biosynthesis, bile acid synthesis, steroid hormone biosynthesis, thiab fatty acid synthesis.

Muaj pes tsawg ATP raug tsim nyob rau hauv HMP shunt?

Hauv HMP shunt, 12 khub ntawm hydrogen atoms thaum kawg hloov mus rau oxygen yielding 12 3 = 36 ATP. Ntawm no, 1 ATP yog siv los hloov ib qho molecule ntawm dawb qabzib-6 phosphate. Li no, cov txiaj ntsig tau yog 35 ATP uas piv tau zoo nrog 38 ATP tau los ntawm glycolysis thiab TCA lub voj voog.

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