Calcium in PDB 2i4b: Crystal Structure of Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium

The structure of Crystal Structure of Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium, PDB code: 2i4b was solved by N.M.Koropatkin, T.J.Smith, H.B.Pakrasi, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	24.60 / 1.35
Space group	P 1
Cell size a, b, c (Å), α, β, γ (°)	44.790, 49.570, 57.740, 87.67, 81.23, 75.24
R / Rfree (%)	20.9 / 22.2

The binding sites of Calcium atom in the Crystal Structure of Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium (pdb code 2i4b). 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 Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium, PDB code: 2i4b:

Calcium binding site 1 out of 1 in the Crystal Structure of Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium


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 Bicarbonate Transport Protein Cmpa From Synechocystis Sp. Pcc 6803 in Complex with Bicarbonate and Calcium within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca454 b:11.1 occ:1.00 OE2 A:GLU70 2.3 10.5 1.0 OE2 A:GLU270 2.3 13.1 1.0 OE1 A:GLN198 2.4 7.6 0.5 O1 A:BCT453 2.4 13.8 1.0 OD1 A:ASN152 2.5 15.5 1.0 OE2 A:GLU271 2.6 19.2 1.0 CD A:GLN198 3.3 8.1 0.5 C A:BCT453 3.3 13.8 1.0 CG A:ASN152 3.4 10.3 1.0 CD A:GLU70 3.4 9.1 1.0 CD A:GLU270 3.5 12.6 1.0 O2 A:BCT453 3.5 14.0 1.0 ND2 A:ASN152 3.5 11.3 1.0 CD A:GLU271 3.6 11.5 1.0 OE1 A:GLN198 3.6 15.5 0.5 CD A:GLN198 3.8 14.5 0.5 NE2 A:GLN198 3.9 9.8 0.5 NE2 A:GLN198 3.9 14.8 0.5 CG A:GLU271 4.0 9.7 1.0 CG A:GLU70 4.1 8.3 1.0 CG A:GLU270 4.2 10.7 1.0 OE1 A:GLU270 4.3 11.4 1.0 OE1 A:GLU70 4.4 8.4 1.0 CG A:GLN198 4.4 11.8 0.5 CG A:GLN198 4.5 13.5 0.5 O A:HOH891 4.5 18.2 1.0 CD1 A:ILE68 4.5 8.1 1.0 O3 A:BCT453 4.6 14.4 1.0 OE1 A:GLU271 4.7 13.1 1.0 CB A:ASN152 4.8 9.7 1.0 NE2 A:GLN121 4.8 10.0 1.0 CB A:ASN197 4.9 7.1 1.0 CG A:GLN121 4.9 8.9 1.0 ND2 A:ASN197 4.9 13.7 1.0

N.M.Koropatkin, D.W.Koppenaal, H.B.Pakrasi, T.J.Smith. The Structure of A Cyanobacterial Bicarbonate Transport Protein, Cmpa. J.Biol.Chem. V. 282 2606 2007.
ISSN: ISSN 0021-9258
PubMed: 17121816
DOI: 10.1074/JBC.M610222200