Sodium in PDB 1w9x: Bacillus Halmapalus Alpha Amylase

All present enzymatic activity of Bacillus Halmapalus Alpha Amylase:
3.2.1.1;

The structure of Bacillus Halmapalus Alpha Amylase, PDB code: 1w9x was solved by G.J.Davies, A.M.Brzozowski, Z.Dauter, M.D.Rasmussen, T.V.Borchert, K.S.Wilson, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	15.00 / 2.1
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	48.180, 75.847, 155.230, 90.00, 90.00, 90.00
R / Rfree (%)	15.1 / 19.8

The structure of Bacillus Halmapalus Alpha Amylase also contains other interesting chemical elements:

Calcium

(Ca)

3 atoms

The binding sites of Sodium atom in the Bacillus Halmapalus Alpha Amylase (pdb code 1w9x). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total only one binding site of Sodium was determined in the Bacillus Halmapalus Alpha Amylase, PDB code: 1w9x:

Sodium binding site 1 out of 1 in the Bacillus Halmapalus Alpha Amylase


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Bacillus Halmapalus Alpha Amylase within 5.0Å range: probe atom residue distance (Å) B Occ A:Na1489 b:8.8 occ:1.00 OD2 A:ASP199 2.3 7.9 1.0 OD2 A:ASP163 2.3 6.9 1.0 OD2 A:ASP205 2.4 10.3 1.0 OD2 A:ASP188 2.6 10.3 1.0 O A:VAL206 2.6 8.9 1.0 OD1 A:ASP199 2.8 5.0 1.0 CG A:ASP199 2.9 9.1 1.0 CG A:ASP188 3.3 10.8 1.0 CG A:ASP163 3.3 10.6 1.0 CG A:ASP205 3.6 10.4 1.0 O A:HOH2126 3.6 7.5 1.0 C A:VAL206 3.6 8.9 1.0 CB A:ASP163 3.7 8.7 1.0 OD1 A:ASP188 3.8 11.6 1.0 O A:HOH2109 3.8 11.6 1.0 CA A:CA1486 4.0 8.4 1.0 CA A:ASP207 4.0 10.5 1.0 CB A:ASP188 4.1 9.1 1.0 N A:ASP207 4.2 9.3 1.0 N A:ASP188 4.2 9.4 1.0 N A:MET208 4.3 12.1 1.0 OD1 A:ASP205 4.3 8.9 1.0 CB A:ASP199 4.4 8.2 1.0 CA A:CA1487 4.4 9.4 1.0 OD1 A:ASP163 4.5 9.8 1.0 CB A:ASP205 4.6 9.6 1.0 O A:ASP205 4.6 8.6 1.0 C A:ASP205 4.7 9.4 1.0 N A:VAL206 4.7 9.5 1.0 C A:ASP207 4.8 11.3 1.0 CA A:VAL206 4.8 8.7 1.0 CE3 A:TRP187 4.8 5.7 1.0 CA A:ASP188 4.9 10.5 1.0 OD1 A:ASP207 4.9 11.1 1.0

G.J.Davies, A.M.Brzozowski, Z.Dauter, M.D.Rasmussen, T.V.Borchert, K.S.Wilson. Structure of A Bacillus Halmapalus Family 13 Alpha-Amylase, Bha, in Complex with An Acarbose-Derived Nonasaccharide at 2.1 A Resolution Acta Crystallogr.,Sect.D V. 61 190 2005.
ISSN: ISSN 0907-4449
PubMed: 15681870
DOI: 10.1107/S0907444904027118