Calcium in PDB 1sum: Crystal Structure of A Hypothetical Protein at 2.0 A Resolution

The structure of Crystal Structure of A Hypothetical Protein at 2.0 A Resolution, PDB code: 1sum was solved by J.Liu, Y.Lou, H.Yokota, P.D.Adams, R.Kim, S.H.Kim, Berkeley Structuralgenomics Center (Bsgc), with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 2.00
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	90.677, 90.677, 45.255, 90.00, 90.00, 120.00
R / Rfree (%)	21.7 / 25.5

The structure of Crystal Structure of A Hypothetical Protein at 2.0 A Resolution also contains other interesting chemical elements:

Nickel	(Ni)	1 atom
Iron	(Fe)	7 atoms

The binding sites of Calcium atom in the Crystal Structure of A Hypothetical Protein at 2.0 A Resolution (pdb code 1sum). 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 Crystal Structure of A Hypothetical Protein at 2.0 A Resolution, PDB code: 1sum:

Calcium binding site 1 out of 1 in the Crystal Structure of A Hypothetical Protein at 2.0 A Resolution


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of A Hypothetical Protein at 2.0 A Resolution within 5.0Å range: probe atom residue distance (Å) B Occ B:Ca401 b:68.0 occ:1.00 CG B:GLU106 3.7 18.3 1.0 CD B:GLU106 3.8 18.6 1.0 OE1 B:GLU106 3.8 20.3 1.0 O B:HOH601 3.9 55.4 1.0 CE B:LYS178 3.9 20.8 1.0 O B:HOH571 3.9 71.0 1.0 CD2 B:LEU182 4.0 10.8 1.0 OE2 B:GLU106 4.5 19.0 1.0 NZ B:LYS178 4.6 23.5 1.0 CB B:GLU106 4.6 16.2 1.0 O B:HOH643 4.7 60.0 1.0 CG B:LEU182 4.9 11.9 1.0 CD1 B:LEU182 5.0 11.8 1.0

J.Liu, Y.Lou, H.Yokota, P.D.Adams, R.Kim, S.H.Kim. Crystal Structure of A Phou Protein Homologue: A New Class of Metalloprotein Containing Multinuclear Iron Clusters. J.Biol.Chem. V. 280 15960 2005.
ISSN: ISSN 0021-9258
PubMed: 15716271
DOI: 10.1074/JBC.M414117200