Medical Definition of M line
1.
| Central part of the A band of striated muscle (and of the M band): contains M line protein (myomesin, 165 kD), creatine kinase (40 kD) and glycogen phosphorylase b (90 kD). Involved in controlling the spacing between thick filaments.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
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Lexicographical Neighbors of M Line
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