Calcium in PDB 2zex: Family 16 Carbohydrate Binding Module

The structure of Family 16 Carbohydrate Binding Module, PDB code: 2zex was solved by B.Bae, S.K.Nair, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 1.20
Space group	P 1
Cell size a, b, c (Å), α, β, γ (°)	32.466, 48.829, 49.356, 62.03, 84.88, 85.95
R / Rfree (%)	15.6 / 17.9

The binding sites of Calcium atom in the Family 16 Carbohydrate Binding Module (pdb code 2zex). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Family 16 Carbohydrate Binding Module, PDB code: 2zex:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Family 16 Carbohydrate Binding Module


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Family 16 Carbohydrate Binding Module within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca406 b:7.0 occ:1.00 O A:LEU38 2.3 6.8 1.0 O A:HOH408 2.4 8.8 1.0 OE2 A:GLU13 2.4 7.9 1.0 O A:GLY11 2.4 7.7 1.0 O A:ASN35 2.4 8.0 1.0 OD1 A:ASP139 2.5 7.8 1.0 OD2 A:ASP139 2.6 7.9 1.0 CG A:ASP139 2.9 7.3 1.0 C A:GLY11 3.4 7.1 1.0 C A:LEU38 3.5 6.9 1.0 C A:ASN35 3.5 8.6 1.0 CD A:GLU13 3.5 7.7 1.0 CA A:GLY11 3.8 7.9 1.0 CG A:GLU13 4.1 8.2 1.0 N A:LEU38 4.2 7.4 1.0 N A:ASN35 4.3 9.0 1.0 N A:GLY36 4.4 8.9 1.0 CB A:ASP139 4.4 7.3 1.0 CA A:ASN35 4.4 9.6 1.0 CA A:GLY36 4.4 8.9 1.0 CA A:LEU38 4.4 7.1 1.0 N A:GLY39 4.4 6.5 1.0 O A:HOH430 4.5 14.7 1.0 CA A:GLY39 4.5 6.5 1.0 OD1 A:ASP140 4.5 11.7 1.0 OE1 A:GLU13 4.6 9.1 1.0 N A:PHE12 4.6 7.1 1.0 CB A:ASN35 4.7 11.0 1.0 C A:GLY36 4.7 8.6 1.0 N A:ALA37 4.8 8.1 1.0 N A:GLU13 4.9 7.8 1.0 CB A:ALA33 4.9 8.1 1.0 CA A:ALA33 5.0 7.6 1.0 C A:PHE12 5.0 7.7 1.0

Calcium binding site 2 out of 2 in the Family 16 Carbohydrate Binding Module


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Family 16 Carbohydrate Binding Module within 5.0Å range: probe atom residue distance (Å) B Occ B:Ca306 b:6.8 occ:1.00 O B:LEU38 2.3 6.9 1.0 O B:HOH308 2.3 9.4 1.0 O B:GLY11 2.4 8.1 1.0 OE2 B:GLU13 2.4 8.4 1.0 O B:ASN35 2.4 8.0 1.0 OD1 B:ASP139 2.5 7.3 1.0 OD2 B:ASP139 2.5 7.0 1.0 CG B:ASP139 2.9 6.6 1.0 C B:GLY11 3.4 8.3 1.0 C B:LEU38 3.5 6.7 1.0 CD B:GLU13 3.5 8.8 1.0 C B:ASN35 3.5 8.7 1.0 CA B:GLY11 3.8 9.2 1.0 CG B:GLU13 4.1 9.3 1.0 N B:LEU38 4.2 6.7 1.0 N B:ASN35 4.3 8.1 1.0 OD1 B:ASP140 4.4 14.2 1.0 N B:GLY36 4.4 8.5 1.0 CA B:GLY36 4.4 8.4 1.0 CB B:ASP139 4.4 6.7 1.0 N B:GLY39 4.4 6.5 1.0 CA B:ASN35 4.4 8.9 1.0 CA B:LEU38 4.4 6.8 1.0 CA B:GLY39 4.5 6.8 1.0 OE1 B:GLU13 4.6 9.5 1.0 N B:PHE12 4.6 8.4 1.0 C B:GLY36 4.7 7.7 1.0 O B:HOH331 4.7 15.0 1.0 CB B:ALA33 4.7 7.5 1.0 CB B:ASN35 4.8 11.7 1.0 CA B:ALA33 4.8 7.0 1.0 N B:ALA37 4.8 7.2 1.0 N B:GLU13 4.8 9.1 1.0 N B:HIS34 4.9 7.4 1.0 C B:PHE12 4.9 8.4 1.0

B.Bae, S.Ohene-Adjei, S.Kocherginskaya, R.I.Mackie, M.A.Spies, I.K.Cann, S.K.Nair. Molecular Basis For the Selectivity and Specificity of Ligand Recognition By the Family 16 Carbohydrate-Binding Modules From Thermoanaerobacterium Polysaccharolyticum Mana J.Biol.Chem. V. 283 12415 2008.
ISSN: ISSN 0021-9258
PubMed: 18025086
DOI: 10.1074/JBC.M706513200