Tshwj xeeb, troponin (cov protein me me) hloov txoj haujlwm ntawm tropomyosin thiab txav mus deb ntawm myosin-binding sites ntawm actin, zoo tshem tawm qhov chaw khi (Daim duab 5). Thaum qhov chaw myosin-binding tau nthuav tawm, thiab yog tias muaj ATP txaus txaus, myosin khi rau actin pib caij hla choj.
Dab tsi ua rau kev caij tsheb kauj vab hla hla?
Lub voj voog ntawm cov leeg nqaij yog tshwm sim los ntawm calcium ions khi rau cov protein ntau troponin, nthuav tawm cov chaw ua haujlwm ntawm cov actin. Sai li qhov chaw actin-binding tau nthuav tawm, lub zog loj myosin taub hau txuas rau qhov sib txawv, tsim tus choj hla.
Kev hla kev yog dab tsi thiab tshwm sim thaum twg?
Kev Kho Mob Txhais ntawm crossbridge
: lub taub hau ntawm lub taub hau ntawm myosin molecule uas ua haujlwm los ntawm myosin filament hauv cov leeg thiab hauv cov zawv zawg filament hypothesis ntawm cov leeg nqaij contraction yog tuav mus txuas ib ntus rau ib qho actin filament uas nyob ib sab thiab kos rau hauv Ib pawg ntawm cov sarcomere ntawm myosin filaments.
thawj kauj ruam ntawm kev caij tsheb kauj vab yog dab tsi?
cov lus teb: Thawj kauj ruam hauv lub voj voog hla hla yog qhov txuas ntawm myosin crossbridges (los yog taub hau) rau cov chaw sib txuas ntawm actin(vim yav dhau los ua ntawm Ca, troponin thiab tropomyosin).
Lub voj voog hla hla yog dab tsi?
Definition. Txoj kev xav ntawm tus choj hla ntawm nqaij leeg hais tias lub zog tsim tawm li cas, thiabYuav ua li cas cov filaments actin thiab myosin hloov mus rau ib leeg los tsim cov leeg luv. … Txhua lub voj voog no yog txuam nrog kev sib txheeb ntawm ∼10 nm thiab lub zog ntawm 2–10 pN.
