Yog tias tam sim no, calcium ions khi rau troponin, ua rau muaj kev hloov pauv hauv troponin uas tso cai rau tropomyosin txav deb ntawm myosin binding qhov chaw ntawm actin. Thaum cov tropomyosin raug tshem tawm, tus choj hla tuaj yeem tsimnruab nrab ntawm actin thiab myosin, ua rau kev cog lus.
vim tus choj hla nruab nrab ntawm dab tsi?
Tus lej ntawm tus choj hla kev tsim ntawm actin thiab myosin txiav txim siab qhov nro uas cov leeg nqaij muaj peev xwm tsim tau. Hla-bridges tsuas yog tsim qhov twg tuab thiab nyias filaments sib tshooj, cia myosin khi rau actin. … Qhov no ua rau muaj tsawg dua myosin taub hau rub ntawm actin thiab tsis tshua muaj cov leeg nqaij.
Cov qauv twg tsim cov hla kev hla thaum cov leeg nqaij?
As the myosin S1 ntu khi thiab tso tawm actin, nws tsim qhov hu ua cross choj, uas txuas los ntawm cov tuab myosin filaments mus rau nyias actin filaments. Kev cog lus ntawm myosin cheeb tsam S1 yog hu ua lub zog stroke (Daim duab 3).
Tus choj hla ntawm cov leeg nqaij yog dab tsi?
: lub taub hau ntawm lub taub hau ntawm myosin molecule uas ua haujlwm los ntawm myosin filament hauv cov leegthiab hauv cov sliding filament hypothesis ntawm cov leeg nqaij contraction yog tuav mus txuas ib ntus mus rau ib qho actin filament uas nyob ib sab thiab kos nws mus rau hauv Ib pawg ntawm cov sarcomere ntawm cov myosin filaments.
Dab tsi ua rau tus choj hla kev uas tsim thaum lub sijhawmKev cog lus quizlet?
Kev nce hauv cytosolic calcium khi rau troponin, uas txav tropomyosin los ntawm kev thaiv cov chaw nquag ntawm cov actin filament, uas khi nrog myosin, tsim kev hla choj, ua rau kev cog lus..
