Cov sclerotomes yuav tsim cov vertebrae thiab intervertebral discs. Cov khoom zais cia los ntawm dorsal neural raj induce dorsomedial ib feem ntawm somite los ua tus epimere uas yuav loj hlob mus rau hauv cov leeg nqaij epaxial, piv txwv li. cov leeg sib sib zog nqus ntawm nraub qaum (erector spinae).
Epimers ua li cas?
Epimers yog stereoisomers uas txawv hauv kev teeb tsa ntawm atoms txuas rau chiral carbon. Hauv cov piv txwv hauv qab no, qhov sib txawv ntawm txoj hauj lwm ntawm hydroxyl (OH) ntawm ib qho chiral carbon tsim ib khub ntawm epimers.
Dab tsi yog Epimerization hauv chemistry?
Epimerization yog kev hloov pauv ntawm cov khoom sib xyaw rau hauv ib qho epimer ib nrab lossis tag nrho. Piv txwv li: saib kuj mutarotation, racemization.
Dab tsi yog Epimerization nrog piv txwv?
Epimerization yog txheej txheem hauv stereochemistry uas muaj kev hloov pauv hauv kev teeb tsa ntawm ib qho chaw chiral nkaus xwb. Yog li ntawd, ib tug diastereomer yog tsim. Cov piv txwv classic ntawm qhov no hauv tshuaj yog tetracycline.
Cov piv txwv epimers yog dab tsi?
Epimers yog cov carbohydrates sib txawv hauv qhov chaw ntawm pawg -OH hauv ib qhov chaw. Ob qho D-glucose thiab D-galactoseyog cov piv txwv zoo tshaj. D-glucose thiab D-galactose epimers tsim qhov sib txawv. Lawv tsis yog enantiomers, tsis yog lawv tsuas yog epimers, lossis diastereomers, lossis isomers.
