Calcium in PDB 1b7t: Myosin Digested By Papain

The structure of Myosin Digested By Papain, PDB code: 1b7t was solved by A.Houdusse, V.Kalabokis, D.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)	30.00 / 2.50
Space group	P 1
Cell size a, b, c (Å), α, β, γ (°)	51.700, 58.900, 138.900, 89.10, 90.00, 73.50
R / Rfree (%)	22.4 / 29.7

The structure of Myosin Digested By Papain also contains other interesting chemical elements:

Magnesium

(Mg)

2 atoms

The binding sites of Calcium atom in the Myosin Digested By Papain (pdb code 1b7t). 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 Myosin Digested By Papain, PDB code: 1b7t:

Calcium binding site 1 out of 1 in the Myosin Digested By Papain


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Myosin Digested By Papain within 5.0Å range: probe atom residue distance (Å) B Occ Z:Ca501 b:57.2 occ:1.00 O Z:ALA27 2.3 65.9 1.0 O Z:GLY23 2.4 53.5 1.0 OD1 Z:ASP25 2.5 87.9 1.0 OD1 Z:ASP22 2.5 71.1 1.0 OD1 Z:ASP19 2.5 58.7 1.0 O Z:ASP19 2.5 34.6 1.0 O Z:HOH773 2.8 59.6 1.0 CG Z:ASP22 3.3 66.0 1.0 O Z:ASP22 3.4 64.0 1.0 C Z:GLY23 3.4 56.2 1.0 C Z:ASP19 3.5 44.3 1.0 CG Z:ASP25 3.5 84.1 1.0 C Z:ALA27 3.5 69.2 1.0 CG Z:ASP19 3.6 63.6 1.0 OD2 Z:ASP22 3.7 60.3 1.0 CA Z:ASP19 3.7 53.2 1.0 C Z:ASP22 3.8 65.8 1.0 N Z:ASP25 4.0 55.8 1.0 OD2 Z:ASP25 4.0 90.0 1.0 N Z:ALA27 4.1 68.1 1.0 CB Z:ASP19 4.1 57.9 1.0 N Z:GLY23 4.3 69.0 1.0 N Z:ARG24 4.3 60.9 1.0 CA Z:ALA27 4.3 70.2 1.0 CA Z:GLY23 4.3 58.7 1.0 CA Z:ARG24 4.3 63.8 1.0 C Z:ARG24 4.4 59.3 1.0 CB Z:ASP25 4.5 67.4 1.0 N Z:VAL28 4.5 68.7 1.0 CB Z:ASP22 4.5 62.2 1.0 CB Z:ALA27 4.6 70.9 1.0 OD2 Z:ASP19 4.6 60.1 1.0 CA Z:VAL28 4.7 65.3 1.0 CA Z:ASP22 4.7 61.6 1.0 CA Z:ASP25 4.7 56.9 1.0 N Z:PHE20 4.7 44.6 1.0 N Z:GLY26 4.8 63.3 1.0 N Z:ASP22 4.8 52.4 1.0 C Z:ASP25 4.9 61.1 1.0

A.Houdusse, V.N.Kalabokis, D.Himmel, A.G.Szent-Gyorgyi, C.Cohen. Atomic Structure of Scallop Myosin Subfragment S1 Complexed with Mgadp: A Novel Conformation of the Myosin Head. Cell(Cambridge,Mass.) V. 97 459 1999.
ISSN: ISSN 0092-8674
PubMed: 10338210
DOI: 10.1016/S0092-8674(00)80756-4