Kev txav ntawm cov leeg nqaij luv tshwm sim thaum myosin taub hau khi rau actin thiab rub cov actin sab hauv. Qhov kev txiav txim no xav tau lub zog, uas yog muab los ntawm ATP. Myosin khi rau actin ntawm qhov chaw khi ntawm globular actin protein.
myosin taub hau khi rau dab tsi?
Lub taub hau ntawm myosin khi actin, tsim cov choj hla ntawm myosin thiab actin filaments. Qhov (ntxiv …) Ntxiv rau kev khi actin, myosin taub hau khi thiab hydrolyze ATP, uas muab lub zog rau tsav filament zawv zawg.
Dab tsi yog qhov txuas ntawm myosin taub hau rau actin hu ua?
Cov kauj ruam uas muaj feem xyuam nrog cov ntsiab lus hauv qab no: Kauj Ruam 1: Thaum kawg ntawm qhov kev hloov pauv dhau los thiab pib ntawm lub voj voog tom ntej, lub taub hau myosin tsis muaj ATP khi thiab nws txuas nrog rau actin filament hauv ib qho. short-lived conformation hu ua ' rigor conformation'
Dab tsi yog qhov chaw khi ntawm lub taub hau myosin?
Lub taub hau myosin muaj ob qhov chaw reactive: Ib qho tso cai rau nws khi nrog cov actin filament, thiab ib qho khi rau ATP. Tsuas yog thaum lub taub hau myosin khi rau qhov chaw nquag ntawm actin, tsim tus choj hla, puas tshwm sim.
Nyob rau hauv lub xeev conformational yog myosin nyob rau hauv tsis muaj ATP?
Kev sib txuas ntawm ATP hydrolysis rau kev txav ntawm myosin raws li actin filament. Thaum tsis muaj cov nucleotide khi, lub taub hau myosin khi actin nruj hauv a "kev nruj" xeev.
