Calcium in PDB 1lka: Porcine Pancreatic Elastase/Ca-Complex

All present enzymatic activity of Porcine Pancreatic Elastase/Ca-Complex:
3.4.21.36;

The structure of Porcine Pancreatic Elastase/Ca-Complex, PDB code: 1lka was solved by M.S.Weiss, S.Panjikar, E.Nowak, P.A.Tucker, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	40.00 / 1.70
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	50.140, 58.110, 74.280, 90.00, 90.00, 90.00
R / Rfree (%)	16.9 / 21.6

The structure of Porcine Pancreatic Elastase/Ca-Complex also contains other interesting chemical elements:

Chlorine

(Cl)

1 atom

The binding sites of Calcium atom in the Porcine Pancreatic Elastase/Ca-Complex (pdb code 1lka). 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 Elastase/Ca-Complex, PDB code: 1lka:

Calcium binding site 1 out of 1 in the Porcine Pancreatic Elastase/Ca-Complex


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Porcine Pancreatic Elastase/Ca-Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca401 b:11.2 occ:1.00 OE1 A:GLU59 2.3 11.4 1.0 O A:ASN61 2.3 10.0 1.0 OD2 A:ASP66 2.3 12.4 1.0 O A:HOH614 2.3 22.1 1.0 O A:GLN64 2.3 9.5 1.0 OE2 A:GLU69 2.4 6.5 1.0 CD A:GLU59 3.1 12.0 1.0 OE2 A:GLU59 3.1 19.3 1.0 CG A:ASP66 3.4 11.3 1.0 C A:ASN61 3.4 8.5 1.0 CD A:GLU69 3.5 9.6 1.0 C A:GLN64 3.6 11.7 1.0 N A:ASP66 3.8 9.9 1.0 CG A:GLU69 3.9 9.6 1.0 N A:ASN61 3.9 7.1 1.0 CB A:ASP66 4.1 9.6 1.0 CA A:ASN61 4.1 7.5 1.0 OD1 A:ASP66 4.3 10.0 1.0 N A:GLN64 4.3 12.6 1.0 CA A:ASN65 4.3 11.3 1.0 CB A:ASN61 4.4 9.7 1.0 N A:ASN65 4.4 11.3 1.0 N A:LEU62 4.4 9.4 1.0 C A:ASN65 4.5 11.4 1.0 CG A:GLU59 4.5 6.8 1.0 OE1 A:GLU69 4.5 9.5 1.0 CA A:LEU62 4.5 9.9 1.0 CA A:GLN64 4.6 11.8 1.0 CA A:ASP66 4.6 10.6 1.0 O A:HOH669 4.6 22.2 1.0 C A:LEU62 4.6 11.9 1.0 N A:HIS60 4.6 7.0 1.0 O A:HOH794 4.8 29.0 1.0 O A:HOH640 4.9 20.0 1.0 OH A:TYR71 4.9 15.9 1.0 N A:ASN63 4.9 11.9 1.0 O A:LEU62 4.9 13.8 1.0

M.S.Weiss, S.Panjikar, E.Nowak, P.A.Tucker. Metal Binding to Porcine Pancreatic Elastase: Calcium or Not Calcium. Acta Crystallogr.,Sect.D V. 58 1407 2002.
ISSN: ISSN 0907-4449
PubMed: 12198296
DOI: 10.1107/S0907444902010934