Calcium in PDB 2id8: Crystal Structure of Proteinase K

All present enzymatic activity of Crystal Structure of Proteinase K:
3.4.21.64;

The structure of Crystal Structure of Proteinase K, PDB code: 2id8 was solved by J.Wang, M.Dauter, Z.Dauter, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	40.00 / 1.27
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	67.550, 67.550, 106.880, 90.00, 90.00, 90.00
R / Rfree (%)	12.4 / 15.9

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

Chlorine

(Cl)

1 atom

The binding sites of Calcium atom in the Crystal Structure of Proteinase K (pdb code 2id8). 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 Proteinase K, PDB code: 2id8:

Calcium binding site 1 out of 1 in the Crystal Structure of Proteinase K


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 Proteinase K within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca401 b:6.8 occ:1.00 O A:VAL177 2.4 7.2 1.0 O A:PRO175 2.4 6.4 1.0 O A:HOH732 2.4 10.7 1.0 O A:HOH713 2.4 9.5 1.0 OD2 A:ASP200 2.4 6.5 1.0 O A:HOH708 2.4 7.1 1.0 O A:HOH725 2.5 14.0 1.0 OD1 A:ASP200 2.7 8.9 1.0 CG A:ASP200 2.9 6.6 1.0 C A:PRO175 3.5 4.8 1.0 C A:VAL177 3.6 4.8 1.0 O A:HOH799 3.6 12.6 1.0 N A:VAL177 4.2 5.7 1.0 CA A:PRO175 4.2 6.2 1.0 O A:VAL198 4.3 7.0 1.0 CB A:ASP200 4.4 6.4 1.0 N A:SER176 4.5 5.7 1.0 O A:HOH926 4.5 58.7 1.0 C A:SER176 4.5 5.9 1.0 N A:CYS178 4.5 4.8 1.0 CA A:CYS178 4.5 4.7 1.0 O A:GLU174 4.5 5.7 1.0 CA A:VAL177 4.6 4.9 1.0 N A:THR179 4.6 5.0 1.0 O A:HOH750 4.7 10.7 1.0 CA A:SER176 4.7 5.5 1.0 OG1 A:THR179 4.8 5.8 1.0 SG A:CYS249 5.0 7.2 1.0

J.Wang, M.Dauter, Z.Dauter. What Can Be Done with A Good Crystal and An Accurate Beamline? Acta Crystallogr.,Sect.D V. 62 1475 2006.
ISSN: ISSN 0907-4449
PubMed: 17139083
DOI: 10.1107/S0907444906038534