Glycogenolysis yog tswj hwm hormonally hauv cov lus teb rau cov ntshav qab zib theem los ntawm glucagon thiab insulin, thiab txhawb nqa los ntawm epinephrine thaum lub sij hawm sib ntaus sib tua. Insulin muaj zog inhibits glycogenolysis. Hauv myocytes, glycogen degradation kuj tseem yuav txhawb nqa los ntawm neural signals.
Glycogenesis tswj hwm li cas?
Glycogen synthesis feem ntau tswj hwm los ntawm modulating cov haujlwm ntawm glycogen synthase. Cov enzyme no muaj nyob rau hauv ob hom, dephosphorylated (active lossis a) thiab phosphorylated (tsis ua haujlwm lossis b). Nws yog tswj los ntawm covalent hloov kho, nyob rau hauv ib qho kev taw qhia inverse mus rau glycogen phosphorylase.
Glycogenesis thiab glycogenolysis tswj li cas?
Glycogenesis thiab glycogenolysis yog tswj los ntawm hormones. Thaum qib ntawm cov piam thaj hauv ntshav, α hlwb ntawm pancreases secretes glucagon. Glucagon txhawb nqa glycogenolysis hauv daim siab. Glycogenolysis tso cov piam thaj rau hauv cov hlab ntsha kom txhim kho cov ntshav qabzib dua.
Dab tsi enzyme tswj glycogenolysis?
Glycogenolysis yog txoj hauv kev biochemical uas glycogen tawg mus rau hauv qabzib-1-phosphate thiab glycogen. Cov tshuaj tiv thaiv tshwm sim nyob rau hauv hepatocytes thiab myocytes. Cov txheej txheem yog raws li kev tswj hwm ntawm ob lub enzymes tseem ceeb: phosphorylase kinase thiab glycogen phosphorylase.
Txoj cai dab tsi tseem ceeb heev hauv glycogenolysis?
Ib qho tseem ceebCov tshuaj hormones tswj glycogenolysis hauv daim siab yog epinephrine. Epinephrine tsis nkag mus rau hauv daim siab cell. Nws khi rau ib qho receptor ntawm hepatocyte (lub siab cell) nto thiab "tus tub txib thib ob" yog tsim nyob rau hauv lub cell.
