Any of a small family of proteins which bind to and cross-link actin microfilaments in the cytoskeleton of eukaryotic cells, first identified from striated muscle cells.
Origin
1960s. From actin + -in.
Definition of actinin in US English:
actinin
nounˈaktɪnɪn
Biochemistry
Any of a small family of proteins which bind to and cross-link actin microfilaments in the cytoskeleton of eukaryotic cells, first identified from striated muscle cells.