1. A protein fragment produced by partial digestion of myosin, consisting of either the head or tail portion of the myosin molecule.
Usage: biochemistry; molecular biology; used in research on muscle contraction and protein structure
2. Specifically, heavy meromyosin (HMM) or light meromyosin (LMM), referring to the two major fragments obtained when myosin is cleaved by proteolytic enzymes.
Usage: technical; biochemistry

Examples

• Researchers used meromyosin to study how myosin heads interact with actin filaments.
• Heavy meromyosin retains the motor activity of the original myosin molecule.
• Light meromyosin forms the structural backbone of the myosin thick filament.
• The isolation of meromyosin fragments helped scientists understand muscle contraction at the molecular level.
• Meromyosin preparations are commonly used in in vitro motility assays.