Thaum twg oxaloacetate tsim?

Cov txheej txheem:

Thaum twg oxaloacetate tsim?
Thaum twg oxaloacetate tsim?
Anonim

Lub pib ntawm cov txheej txheem no tshwm sim hauv mitochondrial matrix, qhov twg pyruvate molecules pom. Lub pyruvate molecule yog carboxylated los ntawm ib tug pyruvate carboxylase enzyme, qhib los ntawm ib tug molecule txhua ntawm ATP thiab dej. Cov tshuaj tiv thaiv no ua rau tsim cov oxaloacetate.

Dab tsi ua oxaloacetate?

Hnub, oxaloacetate yog tsim los ntawm carboxylation ntawm pyruvate, nyob rau hauv cov tshuaj tiv thaiv catalyzed los ntawm biotin-dependent enzyme pyruvate carboxylase. … Yog hais tias tus nqi zog siab, oxaloacetate hloov mus rau hauv qabzib. Yog tias tus nqi zog qis, oxaloacetate rov ua dua lub voj voog citric acid.

Oxaloacetate nyob qhov twg ua rau photosynthesis?

Nyob rau hauv txoj kev C4, pib cov pa roj carbon fixation tshwm sim nyob rau hauv mesophyll hlwb thiab Calvin voj voog tshwm sim nyob rau hauv bundle-sheath cells. PEP carboxylase txuas cov pa roj carbon dioxide tuaj rau hauv peb-carbon molecule PEP, tsim oxaloacetate (ib plaub-carbon molecule).

oxaloacetate yog dab tsi ua ntej rau?

Teb: Oxaloacetate yog qhov ua ntej rau biosynthesis amino acids thiab nucleotides.

Lub sijhawm twg ntawm aerobic regenerates oxaloacetate?

Citric acid cycle (Kuj hu ua Krebs cycle):

Zog los ntawm kev tawg yog siv los hloov ADP rau ATP, NAD + rau NADH, thiab FAD + rau FADH 2. Cov pa roj carbon monoxide los ntawm kev tawg yog koom nrog oxygen los ua carbon dioxide, uas yog pov tsegkhoom. Oxaloacetate yog regenerated kawg ntawm lub voj voog.

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