Protein: Myosin Regulatory Chain from Bay scallop (Aequipecten irradians)

Lineage:

1. Root: scop
2. Class: All alpha proteins
3. Fold: EF Hand-like
   core: 4 helices; array of 2 hairpins, opened
4. Superfamily: EF-hand
   Duplication: consists of two EF-hand units: each is made of two helices connected with calcium-binding loop
5. Family: Calmodulin-like
   Duplication: made with two pairs of EF-hands
6. Protein: Myosin Regulatory Chain
7. Species: Bay scallop (Aequipecten irradians)

PDB Entry Domains:

1. 1wdc
   complexed with ca, mg
   1. chain c
2. 1b7t
   complexed with adp, ca, mg
   1. chain z
3. 1scm
   complexed with ca
   1. chain c
4. 1dfk
   complexed with ca
   1. chain z
5. 1dfl
   complexed with adp, ca, mg, vo4
   1. chain x
   2. chain z