An actinin is a microfilament protein which has a function in the attachment of actin fibres in muscle cells.
The molecule connected to the Z line in muscle fibers is alpha-actinin. Alpha-actinin helps anchor actin filaments at the Z line, providing structural support and stability during muscle contractions.
Alpha-actinin is a molecule connected to the Z disc in muscle cells. It plays a critical role in anchoring actin filaments at the Z disc, helping to maintain the structural integrity of the sarcomere.
sarcomere thin filaments are linked laterally by proteins of the Z-disc, such as α-actinin. These proteins help stabilize the alignment of actin filaments within the sarcomere and contribute to muscle contraction.