Component of the sarcomere that tethers together nebulin (skeletal muscle) and nebulette (cardiac muscle) to alpha-actinin, at the Z lines.
Cytoplasm . Nucleus . Cytoplasm, myofibril, sarcomere . Cytoplasm, myofibril, sarcomere, Z line . Bound to sarcomere both at the Z-line periphery and in the central I-band region. .
Expressed in adult skeletal muscle and fetal heart.
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