Protein attached to M-line = ....P....,Protei | vedclass

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Question

(A) In the structure of a sarcomere,the $M$-line is a thin fibrous membrane in the center of the $A$-band where thick filaments (myosin) are anchored.

Vedclass · Accepted Answer

$P -$ Myosin filament,$Q -$ Actin filament

Vedclass · Answer

(A) In the structure of a sarcomere,the $M$-line is a thin fibrous membrane in the center of the $A$-band where thick filaments (myosin) are anchored.Conversely,the $Z$-line (or $Z$-disc) is a dark fibrous membrane that bisects the $I$-band,where thin filaments (actin) are firmly attached.Therefore,the protein/filament attached to the $M$-line is myosin $(P)$ and the protein/filament attached to the $Z$-line is actin $(Q)$.

Protein attached to $M$-line $= ....P....$,Protein attached to $Z$-line $= ....Q....$

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