Calcium in PDB 2e0p: The Crystal Structure of CEL44A

All present enzymatic activity of The Crystal Structure of CEL44A:
3.2.1.151; 3.2.1.4;

The structure of The Crystal Structure of CEL44A, PDB code: 2e0p was solved by Y.Kitago, S.Karita, N.Watanabe, K.Sakka, I.Tanaka, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	19.69 / 1.60
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	47.898, 59.119, 170.539, 90.00, 90.00, 90.00
R / Rfree (%)	17 / 18.6

The structure of The Crystal Structure of CEL44A also contains other interesting chemical elements:

Chlorine	(Cl)	1 atom
Zinc	(Zn)	1 atom

The binding sites of Calcium atom in the The Crystal Structure of CEL44A (pdb code 2e0p). 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 The Crystal Structure of CEL44A, PDB code: 2e0p:

Calcium binding site 1 out of 1 in the The Crystal Structure of CEL44A


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of The Crystal Structure of CEL44A within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca701 b:12.2 occ:1.00 O A:ASP150 2.3 18.5 1.0 O A:TYR155 2.3 14.0 1.0 OD1 A:ASP153 2.3 15.7 1.0 O A:HOH801 2.4 13.6 1.0 O A:HOH827 2.4 14.7 1.0 OE2 A:GLU54 2.4 11.0 1.0 OE1 A:GLU54 2.5 14.4 1.0 CD A:GLU54 2.8 10.8 1.0 CG A:ASP153 3.4 19.1 1.0 C A:ASP150 3.5 19.3 1.0 C A:TYR155 3.5 13.4 1.0 OD2 A:ASP153 3.7 18.6 1.0 O A:HOH831 4.2 15.4 1.0 CA A:THR151 4.3 22.9 1.0 N A:THR151 4.3 20.7 1.0 CG A:GLU54 4.3 11.5 1.0 N A:TYR155 4.4 16.7 1.0 N A:VAL156 4.4 12.8 1.0 CA A:VAL156 4.4 11.4 1.0 CA A:ASP150 4.4 19.7 1.0 CG2 A:VAL156 4.4 11.1 1.0 CA A:TYR155 4.5 15.2 1.0 O A:ASP153 4.5 17.3 1.0 N A:ASP150 4.5 18.1 1.0 CB A:ASP150 4.6 20.9 1.0 O A:HOH860 4.7 15.8 1.0 CB A:ASP153 4.7 18.7 1.0 N A:ASP153 4.7 21.1 1.0 C A:THR151 4.7 24.0 1.0 C A:ASP153 4.7 18.0 1.0 O A:HOH881 4.8 12.8 1.0 CA A:ASP153 4.9 19.3 1.0

Y.Kitago, S.Karita, N.Watanabe, M.Kamiya, T.Aizawa, K.Sakka, I.Tanaka. Crystal Structure of CEL44A, A Glycoside Hydrolase Family 44 Endoglucanase From Clostridium Thermocellum. J.Biol.Chem. V. 282 35703 2007.
ISSN: ISSN 0021-9258
PubMed: 17905739
DOI: 10.1074/JBC.M706835200