Calcium in PDB 1dfk: Nucleotide-Free Scallop Myosin S1-Near Rigor State

The structure of Nucleotide-Free Scallop Myosin S1-Near Rigor State, PDB code: 1dfk was solved by A.Houdusse, A.G.Szent-Gyorgyi, C.Cohen, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 4.20
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	86.500, 52.100, 164.600, 90.00, 100.30, 90.00
R / Rfree (%)	41.5 / 41

The binding sites of Calcium atom in the Nucleotide-Free Scallop Myosin S1-Near Rigor State (pdb code 1dfk). 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 Nucleotide-Free Scallop Myosin S1-Near Rigor State, PDB code: 1dfk:

Calcium binding site 1 out of 1 in the Nucleotide-Free Scallop Myosin S1-Near Rigor State


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Nucleotide-Free Scallop Myosin S1-Near Rigor State within 5.0Å range: probe atom residue distance (Å) B Occ Z:Ca501 b:40.0 occ:1.00 O Z:ALA27 2.3 40.0 1.0 O Z:ASP19 2.3 40.0 1.0 O Z:GLY23 2.6 40.0 1.0 C Z:ASP19 3.2 40.0 1.0 CA Z:ASP19 3.4 40.0 1.0 O Z:ASP22 3.4 40.0 1.0 C Z:ALA27 3.5 40.0 1.0 C Z:GLY23 3.5 40.0 1.0 C Z:ASP22 3.8 40.0 1.0 CB Z:ASP19 3.9 40.0 1.0 N Z:ASP25 4.1 40.0 1.0 N Z:ALA27 4.1 40.0 1.0 N Z:GLY23 4.2 40.0 1.0 N Z:ARG24 4.3 40.0 1.0 CA Z:ALA27 4.3 40.0 1.0 CB Z:ASP22 4.4 40.0 1.0 CA Z:GLY23 4.4 40.0 1.0 CA Z:ARG24 4.4 40.0 1.0 N Z:PHE20 4.4 40.0 1.0 N Z:VAL28 4.4 40.0 1.0 CA Z:VAL28 4.5 40.0 1.0 CA Z:ASP22 4.5 40.0 1.0 C Z:ARG24 4.6 40.0 1.0 N Z:ASP22 4.6 40.0 1.0 N Z:ASP19 4.7 40.0 1.0 CB Z:ALA27 4.8 40.0 1.0 O Z:PHE18 4.8 40.0 1.0 CB Z:ASP25 4.8 40.0 1.0 N Z:GLY26 4.9 40.0 1.0 CA Z:ASP25 4.9 40.0 1.0

A.Houdusse, A.G.Szent-Gyorgyi, C.Cohen. Three Conformational States of Scallop Myosin S1. Proc.Natl.Acad.Sci.Usa V. 97 11238 2000.
ISSN: ISSN 0027-8424
PubMed: 11016966
DOI: 10.1073/PNAS.200376897