Chlorine in PDB 1lkb: Porcine Pancreatic Elastase/Na-Complex

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

The structure of Porcine Pancreatic Elastase/Na-Complex, PDB code: 1lkb 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 (°)	50.170, 58.060, 74.340, 90.00, 90.00, 90.00
R / Rfree (%)	16.9 / 20.3

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

Sodium

(Na)

1 atom

The binding sites of Chlorine atom in the Porcine Pancreatic Elastase/Na-Complex (pdb code 1lkb). This binding sites where shown within 5.0 Angstroms radius around Chlorine atom.
In total only one binding site of Chlorine was determined in the Porcine Pancreatic Elastase/Na-Complex, PDB code: 1lkb:

Chlorine binding site 1 out of 1 in the Porcine Pancreatic Elastase/Na-Complex


Mono view


Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 1 of Porcine Pancreatic Elastase/Na-Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:Cl503 b:17.2 occ:1.00 OG A:SER14 2.9 7.7 1.0 O A:HOH626 3.0 17.9 1.0 O A:HOH752 3.1 29.3 1.0 N A:SER14 3.3 6.3 1.0 CA A:TRP12 3.5 8.3 1.0 C A:TRP12 3.5 7.4 1.0 N A:PRO13 3.6 7.6 1.0 CB A:SER14 3.7 6.8 1.0 CD A:PRO13 3.7 7.9 1.0 CE1 A:HIS193 3.8 6.7 1.0 O A:HOH573 3.8 14.3 1.0 CA A:SER14 3.9 5.6 1.0 CB A:TRP12 4.0 8.0 1.0 ND1 A:HIS193 4.1 5.2 1.0 O A:TRP12 4.1 7.3 1.0 CE3 A:TRP12 4.3 7.9 1.0 C A:PRO13 4.3 6.8 1.0 CG A:PRO13 4.3 7.7 1.0 O A:HOH589 4.3 18.0 1.0 O A:HOH598 4.4 9.9 1.0 CA A:PRO13 4.5 7.0 1.0 N A:GLN15 4.5 6.0 1.0 O A:SER11 4.6 11.4 1.0 C A:SER14 4.6 6.1 1.0 N A:TRP12 4.8 8.9 1.0 O A:HOH790 4.8 31.3 1.0 NE2 A:HIS193 4.9 6.4 1.0 CG A:TRP12 5.0 7.8 1.0 CD2 A:TRP12 5.0 6.8 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