Calcium in PDB 1g4y: 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin

The structure of 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin, PDB code: 1g4y was solved by M.A.Schumacher, A.Rivard, H.P.Bachinger, J.P.Adelman, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	40.00 / 1.60
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	77.650, 66.690, 64.690, 90.00, 93.70, 90.00
R / Rfree (%)	22.1 / 25.1

The binding sites of Calcium atom in the 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin (pdb code 1g4y). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin, PDB code: 1g4y:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin within 5.0Å range: probe atom residue distance (Å) B Occ R:Ca1001 b:42.0 occ:1.00 OD1 R:ASP22 2.1 55.6 1.0 O R:HOH1024 2.2 40.9 1.0 OE1 R:GLU31 2.3 33.7 1.0 OD1 R:ASP24 2.3 47.4 1.0 O R:THR26 2.3 39.7 1.0 OD1 R:ASP20 2.4 44.0 1.0 OE2 R:GLU31 2.7 36.0 1.0 CD R:GLU31 2.8 40.2 1.0 CG R:ASP22 3.0 53.8 1.0 CG R:ASP24 3.1 56.3 1.0 OD2 R:ASP22 3.3 59.9 1.0 CG R:ASP20 3.4 49.0 1.0 C R:THR26 3.6 36.5 1.0 OD2 R:ASP24 3.7 50.9 1.0 N R:ASP24 4.0 54.6 1.0 CB R:ASP24 4.1 50.9 1.0 OD2 R:ASP20 4.2 50.7 1.0 N R:ASP22 4.2 60.7 1.0 CA R:ASP20 4.2 49.8 1.0 N R:THR26 4.3 42.4 1.0 CG2 R:THR26 4.3 35.6 1.0 CB R:ASP22 4.3 60.3 1.0 CG R:GLU31 4.3 29.7 1.0 CB R:ASP20 4.4 49.9 1.0 N R:GLY23 4.4 63.7 1.0 C R:ASP20 4.5 55.4 1.0 N R:LYS21 4.5 57.2 1.0 CA R:THR26 4.5 43.8 1.0 N R:ILE27 4.5 38.1 1.0 CA R:ASP24 4.5 50.9 1.0 CA R:ASP22 4.6 62.1 1.0 CA R:ILE27 4.6 34.8 1.0 C R:ASP22 4.7 62.5 1.0 N R:GLY25 4.9 43.2 1.0 C R:ASP24 4.9 43.8 1.0

Calcium binding site 2 out of 2 in the 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of 1.60 A Crystal Structure of the Gating Domain From Small Conductance Potassium Channel Complexed with Calcium-Calmodulin within 5.0Å range: probe atom residue distance (Å) B Occ R:Ca1002 b:39.4 occ:1.00 OD1 R:ASP56 2.1 50.8 1.0 OE2 R:GLU67 2.2 55.4 1.0 OD2 R:ASP58 2.4 72.5 1.0 OD1 R:ASN60 2.6 54.9 1.0 O R:THR62 2.7 35.2 1.0 CD R:GLU67 3.0 56.4 1.0 OE1 R:GLU67 3.0 51.0 1.0 CG R:ASP56 3.3 53.3 1.0 CG R:ASN60 3.4 55.3 1.0 CG R:ASP58 3.6 67.7 1.0 N R:ALA57 3.7 64.8 1.0 ND2 R:ASN60 3.7 61.1 1.0 CA R:ASP56 3.8 60.8 1.0 N R:ASP58 3.8 66.6 1.0 N R:ASN60 3.9 50.4 1.0 C R:THR62 3.9 38.7 1.0 N R:GLY59 3.9 63.8 1.0 C R:ASP56 4.0 63.9 1.0 O R:HOH1082 4.0 39.2 1.0 CB R:ASP56 4.1 52.6 1.0 OD2 R:ASP56 4.2 39.4 1.0 C R:ASP58 4.3 66.0 1.0 OD1 R:ASP58 4.3 65.3 1.0 N R:THR62 4.4 42.8 1.0 CG R:GLU67 4.4 49.9 1.0 CA R:ASP58 4.4 65.3 1.0 C R:ALA57 4.5 66.8 1.0 CA R:GLY59 4.5 58.0 1.0 CA R:ALA57 4.5 67.1 1.0 CB R:ASN60 4.6 52.6 1.0 N R:GLY61 4.6 46.6 1.0 CB R:ASP58 4.6 66.9 1.0 C R:GLY59 4.7 53.1 1.0 CA R:ASN60 4.7 49.4 1.0 O R:ASP56 4.8 66.1 1.0 CA R:THR62 4.8 40.4 1.0 CA R:ILE63 4.8 32.5 1.0 N R:ILE63 4.8 35.7 1.0 CB R:ALA57 4.9 66.0 1.0 O R:VAL55 4.9 60.8 1.0 OG1 R:THR62 5.0 40.9 1.0

M.A.Schumacher, A.F.Rivard, H.P.Bachinger, J.P.Adelman. Structure of the Gating Domain of A CA2+-Activated K+ Channel Complexed with CA2+/Calmodulin. Nature V. 410 1120 2001.
ISSN: ISSN 0028-0836
PubMed: 11323678
DOI: 10.1038/35074145