YBiosynthesis. Spermine biosynthesis hauv tsiaj pib nrog decarboxylation ntawm
ornithine los ntawm enzyme Ornithine decarboxylase nyob rau hauv lub xub ntiag ntawm PLP. Qhov no decarboxylation muab putrescine. Tom qab ntawd cov enzyme spermidine synthase cuam tshuam ob N-alkylation los ntawm decarboxy-S-Adenosyl methionine.
Yuav ua li cas polyamines ua?
Polyamines yog synthesized los ntawm ob amino acids: L-methionine thiab L-ornithine (ib amino acid uas tsis pom nyob rau hauv cov proteins, uas yog tsim raws li ib feem ntawm lub voj voog urea.). Nyob rau hauv mammalian hlwb, putrescine yog tsim los ntawm decarboxylation ntawm ornithine, cov tshuaj tiv thaiv catalyzed los ntawm enzyme ornithine decarboxylase (ODC).
spermine tsim nyob qhov twg?
Putrescine, spermidine thiab spermine yog tsim nyob rau hauv cov ntaub so ntswg tsiaj, thiab putrescine kuj tsim los ntawm plab hnyuv kab mob los ntawm decarboxylation ntawm lysine thiab ornithine nyob rau hauv txoj hnyuv.
Spermine tsw zoo li cas?
Thaum nws los txog rau hiav txwv lampreys, txawm li cas los xij, spermine tsw zoo li kev hlub Spermine, ib qho ntxhiab tsw muaj nyob hauv txiv neej phev, ua pov thawj tias muaj zog aphrodisiac. Qee tus neeg raug kos rau cologne; lwm tus yog attracted rau naj hoom. Thaum nws los txog rau hiav txwv lampreys, txawm li cas los xij, spermine tsw zoo li kev hlub.
Txoj kev polyamine biosynthesis yog dab tsi?
Txoj hauv kev tseem ceeb ntawm polyamine biosynthesis yog lub decarboxylation ntawm ornithine catalyzed los ntawm ornithine decarboxylase (ODC) los tsim putrescineTom qab ntawd, spermidine thiab spermine yog tsim los ntawm cov tshuaj tiv thaiv enzymatic ntawm spermidine synthetase (encoded los ntawm SRM) thiab spermidine synthetase (encoded los ntawm SMS).
