Calcium in PDB 1sr6: Structure of Nucleotide-Free Scallop Myosin S1

The structure of Structure of Nucleotide-Free Scallop Myosin S1, PDB code: 1sr6 was solved by D.Risal, S.Gourinath, D.M.Himmel, 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)	38.79 / 2.75
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	83.591, 51.109, 162.329, 90.00, 98.02, 90.00
R / Rfree (%)	24.2 / 28.6

The structure of Structure of Nucleotide-Free Scallop Myosin S1 also contains other interesting chemical elements:

Magnesium

(Mg)

1 atom

The binding sites of Calcium atom in the Structure of Nucleotide-Free Scallop Myosin S1 (pdb code 1sr6). 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 Structure of Nucleotide-Free Scallop Myosin S1, PDB code: 1sr6:

Calcium binding site 1 out of 1 in the Structure of Nucleotide-Free Scallop Myosin S1


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Structure of Nucleotide-Free Scallop Myosin S1 within 5.0Å range: probe atom residue distance (Å) B Occ C:Ca991 b:98.4 occ:1.00 O C:GLY23 2.2 50.9 1.0 OD1 C:ASP22 2.2 79.3 1.0 O C:ALA27 2.4 55.8 1.0 OD2 C:ASP25 2.4 56.1 1.0 OD1 C:ASP19 2.5 55.8 1.0 O C:ASP19 2.6 38.9 1.0 C C:GLY23 3.3 51.4 1.0 CG C:ASP25 3.4 55.4 1.0 CG C:ASP22 3.5 66.3 1.0 C C:ASP19 3.5 40.5 1.0 C C:ALA27 3.5 53.4 1.0 CG C:ASP19 3.6 48.9 1.0 CA C:ASP19 3.7 42.7 1.0 OD1 C:ASP25 3.7 62.7 1.0 O C:ASP22 3.8 52.7 1.0 C C:ASP22 3.9 51.4 1.0 N C:GLY23 4.0 51.1 1.0 CA C:GLY23 4.0 51.8 1.0 N C:ASP25 4.1 53.1 1.0 O C:HOH996 4.1 91.4 1.0 CB C:ASP19 4.2 43.5 1.0 OD2 C:ASP22 4.2 71.8 1.0 N C:ARG24 4.2 47.0 1.0 N C:ALA27 4.2 53.8 1.0 CA C:ALA27 4.4 54.7 1.0 CA C:ARG24 4.4 48.7 1.0 C C:ARG24 4.5 52.0 1.0 CB C:ASP22 4.5 54.4 1.0 OD2 C:ASP19 4.5 58.6 1.0 N C:VAL28 4.5 51.0 1.0 CB C:ASP25 4.7 49.7 1.0 CA C:ASP22 4.7 49.3 1.0 CB C:ALA27 4.7 54.1 1.0 CA C:VAL28 4.7 48.3 1.0 N C:PHE20 4.7 37.8 1.0 CA C:ASP25 4.8 50.5 1.0 N C:ASP22 4.8 43.0 1.0 O C:PHE18 4.9 42.8 1.0 C C:ASP25 5.0 51.3 1.0

D.Risal, S.Gourinath, D.M.Himmel, A.G.Szent-Gyorgyi, C.Cohen. Myosin Subfragment 1 Structures Reveal A Partially Bound Nucleotide and A Complex Salt Bridge That Helps Couple Nucleotide and Actin Binding. Proc.Natl.Acad.Sci.Usa V. 101 8930 2004.
ISSN: ISSN 0027-8424
PubMed: 15184651
DOI: 10.1073/PNAS.0403002101