Calcium in PDB 1ose: Porcine Pancreatic Alpha-Amylase Complexed with Acarbose

All present enzymatic activity of Porcine Pancreatic Alpha-Amylase Complexed with Acarbose:
3.2.1.1;

The structure of Porcine Pancreatic Alpha-Amylase Complexed with Acarbose, PDB code: 1ose was solved by C.Gilles, F.Payan, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	8.00 / 2.30
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	70.600, 114.700, 118.500, 90.00, 90.00, 90.00
R / Rfree (%)	17.6 / 22.2

The structure of Porcine Pancreatic Alpha-Amylase Complexed with Acarbose also contains other interesting chemical elements:

Chlorine

(Cl)

1 atom

The binding sites of Calcium atom in the Porcine Pancreatic Alpha-Amylase Complexed with Acarbose (pdb code 1ose). 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 Porcine Pancreatic Alpha-Amylase Complexed with Acarbose, PDB code: 1ose:

Calcium binding site 1 out of 1 in the Porcine Pancreatic Alpha-Amylase Complexed with Acarbose


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Porcine Pancreatic Alpha-Amylase Complexed with Acarbose within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca500 b:11.6 occ:1.00 OD1 A:ASN100 2.2 14.4 1.0 O A:HOH1023 2.3 7.4 1.0 O A:HOH1035 2.3 10.5 1.0 O A:HIS201 2.3 12.5 1.0 O A:HOH1016 2.3 11.0 1.0 OD2 A:ASP167 2.4 11.9 1.0 O A:ARG158 2.4 9.5 1.0 OD1 A:ASP167 2.5 9.3 1.0 CG A:ASP167 2.8 7.1 1.0 CG A:ASN100 3.3 10.3 1.0 C A:ARG158 3.5 14.1 1.0 C A:HIS201 3.6 10.8 1.0 ND2 A:ASN100 3.9 9.9 1.0 CA A:ARG158 4.1 14.7 1.0 CB A:HIS201 4.2 8.0 1.0 O A:ASN100 4.2 11.1 1.0 CB A:ASP167 4.3 7.2 1.0 CA A:HIS201 4.4 10.1 1.0 O A:HOH1051 4.4 17.3 1.0 CG A:MET202 4.5 13.0 1.0 N A:MET202 4.5 8.5 1.0 N A:ASP159 4.5 15.6 1.0 ND2 A:ASN137 4.6 20.8 1.0 O A:VAL157 4.6 16.4 1.0 CB A:ASN100 4.6 9.8 1.0 O A:CYS160 4.6 16.3 1.0 CA A:MET202 4.6 10.2 1.0 O A:LEU168 4.8 15.3 1.0 CA A:ASP159 4.8 14.4 1.0 O A:HOH1001 5.0 25.2 1.0 CB A:ARG158 5.0 12.3 1.0

C.Gilles, J.P.Astier, G.Marchis-Mouren, C.Cambillau, F.Payan. Crystal Structure of Pig Pancreatic Alpha-Amylase Isoenzyme II, in Complex with the Carbohydrate Inhibitor Acarbose. Eur.J.Biochem. V. 238 561 1996.
ISSN: ISSN 0014-2956
PubMed: 8681972
DOI: 10.1111/J.1432-1033.1996.0561Z.X