Calcium in PDB 1wdc: Scallop Myosin Regulatory Domain

The structure of Scallop Myosin Regulatory Domain, PDB code: 1wdc was solved by A.Houdusse, C.Cohen, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	8.00 / 2.00
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	52.650, 87.100, 55.500, 90.00, 114.50, 90.00
R / Rfree (%)	19.4 / 28.1

The structure of Scallop Myosin Regulatory Domain also contains other interesting chemical elements:

Magnesium

(Mg)

1 atom

The binding sites of Calcium atom in the Scallop Myosin Regulatory Domain (pdb code 1wdc). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the Scallop Myosin Regulatory Domain, PDB code: 1wdc:

Calcium binding site 1 out of 1 in the Scallop Myosin Regulatory Domain


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Scallop Myosin Regulatory Domain within 5.0Å range: probe atom residue distance (Å) B Occ C:Ca501 b:26.4 occ:1.00 O C:ALA27 2.4 34.0 1.0 OD1 C:ASP19 2.4 21.6 1.0 O C:HOH512 2.5 28.2 1.0 OD1 C:ASP22 2.6 29.5 1.0 O C:GLY23 2.6 28.9 1.0 OD1 C:ASP25 2.6 37.8 1.0 O C:ASP19 2.6 28.3 1.0 C C:ASP19 3.4 25.9 1.0 CG C:ASP19 3.5 25.4 1.0 CA C:ASP19 3.6 26.2 1.0 C C:ALA27 3.6 31.7 1.0 CG C:ASP25 3.6 36.5 1.0 CG C:ASP22 3.6 26.2 1.0 C C:GLY23 3.6 22.3 1.0 C C:ASP22 3.9 24.6 1.0 N C:ASP25 3.9 30.7 1.0 O C:ASP22 3.9 25.5 1.0 OD2 C:ASP25 4.1 43.5 1.0 CB C:ASP19 4.1 24.5 1.0 N C:GLY23 4.1 22.1 1.0 N C:ALA27 4.1 27.4 1.0 OD2 C:ASP22 4.2 28.6 1.0 CA C:GLY23 4.4 23.9 1.0 CA C:ALA27 4.4 30.1 1.0 N C:ARG24 4.5 17.2 1.0 N C:VAL28 4.5 31.6 1.0 CA C:ARG24 4.5 22.3 1.0 O C:HOH556 4.5 37.6 1.0 CB C:ASP22 4.5 21.6 1.0 CA C:ASP22 4.5 21.9 1.0 CA C:VAL28 4.6 29.6 1.0 OD2 C:ASP19 4.6 30.9 1.0 N C:ASP22 4.6 22.5 1.0 CB C:ASP25 4.6 28.6 1.0 CA C:ASP25 4.7 28.7 1.0 C C:ARG24 4.7 25.8 1.0 N C:PHE20 4.7 19.9 1.0 O C:PHE18 4.8 22.8 1.0 N C:GLY26 4.8 30.7 1.0 C C:ASP25 4.8 32.1 1.0 N C:ASP19 4.9 27.0 1.0 CB C:ALA27 4.9 21.6 1.0

A.Houdusse, C.Cohen. Structure of the Regulatory Domain of Scallop Myosin at 2 A Resolution: Implications For Regulation. Structure V. 4 21 1996.
ISSN: ISSN 0969-2126
PubMed: 8805510
DOI: 10.1016/S0969-2126(96)00154-2