Myosin Binding Protein-C Slow: An Intricate Subfamily of Proteins

Table 2

MyBP-C slow variants 1–4 are present in varying amounts in different skeletal muscles. A plus (+) sign indicates the presence of the respective variant in a select muscle. The relative abundance of variants 1–4 in the skeletal muscles tested is illustrated by the number of plus signs.

Muscle Type	Variant 1	Variant 2	Variant 3	Variant 4
Extensor Digitorum Longus	++	+++	—	++
Flexor Digitorum Brevis	+++	++	—	++
Tibialis Anterior	++	++	—	—
Gastrocnemius	+	+	—	+
Quadriceps	—	++	—	—
Soleus	++++	—	+	+++
P1 Myotubes	++	—	+	—