Chlorine in PDB 4qrg: Crystal Structure of I86L Mutant of Papain

All present enzymatic activity of Crystal Structure of I86L Mutant of Papain:
3.4.22.2;

The structure of Crystal Structure of I86L Mutant of Papain, PDB code: 4qrg was solved by S.Dutta, D.Choudhury, S.Roy, S.Biswas, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	39.34 / 2.50
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	42.722, 75.218, 116.463, 90.00, 93.21, 90.00
R / Rfree (%)	15.7 / 22.3

The structure of Crystal Structure of I86L Mutant of Papain also contains other interesting chemical elements:

Sodium

(Na)

1 atom

The binding sites of Chlorine atom in the Crystal Structure of I86L Mutant of Papain (pdb code 4qrg). This binding sites where shown within 5.0 Angstroms radius around Chlorine atom.
In total 2 binding sites of Chlorine where determined in the Crystal Structure of I86L Mutant of Papain, PDB code: 4qrg:
Jump to Chlorine binding site number: 1; 2;

Chlorine binding site 1 out of 2 in the Crystal Structure of I86L Mutant of Papain


Mono view


Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 1 of Crystal Structure of I86L Mutant of Papain within 5.0Å range: probe atom residue distance (Å) B Occ A:Cl402 b:78.1 occ:1.00 N A:GLU225 3.1 33.4 1.0 O A:HOH587 3.4 42.6 1.0 CA A:ASN224 3.8 31.9 1.0 CB A:GLU225 3.8 34.1 1.0 C A:ASN224 3.9 32.3 1.0 O A:TYR223 4.0 37.6 1.0 CA A:GLU225 4.1 33.0 1.0 O A:GLY301 4.1 99.6 1.0 CA A:SER303 4.3 43.9 1.0 N A:ASN224 4.4 26.5 1.0 C A:TYR223 4.5 34.2 1.0 CB A:SER303 4.7 48.5 1.0 CE1 A:TYR310 4.8 31.1 1.0 CB A:ASN224 4.9 42.2 1.0 CD1 A:TYR310 4.9 33.4 1.0 CG A:ASN224 4.9 41.1 1.0 N A:GLY226 5.0 30.9 1.0 O A:SER303 5.0 39.3 1.0 O A:ASN302 5.0 48.3 1.0 C A:GLY301 5.0 91.3 1.0

Chlorine binding site 2 out of 2 in the Crystal Structure of I86L Mutant of Papain


Mono view


Stereo pair view

A full contact list of Chlorine with other atoms in the Cl binding site number 2 of Crystal Structure of I86L Mutant of Papain within 5.0Å range: probe atom residue distance (Å) B Occ A:Cl403 b:72.2 occ:1.00 OH A:TYR304 3.9 67.4 1.0 CZ A:TYR304 4.0 57.3 1.0 CG A:TYR223 4.1 34.4 1.0 CD2 A:TYR223 4.2 30.2 1.0 CE1 A:TYR304 4.2 49.3 1.0 CD1 A:TYR223 4.2 31.4 1.0 CE2 A:TYR223 4.3 28.6 1.0 CE1 A:TYR223 4.4 36.0 1.0 OG A:SER303 4.4 60.7 1.0 CZ A:TYR223 4.4 40.3 1.0 CB A:TYR223 4.7 35.5 1.0 CE2 A:TYR304 4.7 49.5 1.0 CD1 A:TYR304 4.9 38.5 1.0 O A:HOH538 4.9 42.1 1.0

S.Dutta, D.Choudhury, S.Roy, S.Biswas. Pro-Peptide Regulates the Substrate Specificity and Zymogen Activation Process of Papain: A Structural and Mechanistic Insight To Be Published.