Potassium in PDB 1zqk: Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar)

The structure of Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar), PDB code: 1zqk was solved by H.Pelletier, M.R.Sawaya, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 3.20
Space group	P 21 21 2
Cell size a, b, c (Å), α, β, γ (°)	178.736, 57.760, 48.221, 90.00, 90.00, 90.00
R / Rfree (%)	14.5 / n/a

The binding sites of Potassium atom in the Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar) (pdb code 1zqk). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar), PDB code: 1zqk:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar)


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar) within 5.0Å range: probe atom residue distance (Å) B Occ A:K341 b:21.2 occ:1.00 O A:THR101 2.2 27.3 1.0 OP1 P:DT6 2.3 19.6 1.0 O P:HOH601 2.6 0.0 1.0 O A:ILE106 2.6 11.7 1.0 O A:VAL103 2.9 1.0 1.0 O P:HOH665 3.1 43.0 1.0 C A:THR101 3.3 22.9 1.0 C A:VAL103 3.4 1.9 1.0 P P:DT6 3.6 9.5 1.0 C A:ILE106 3.6 8.7 1.0 CA A:SER104 3.8 7.9 1.0 N A:ILE106 3.8 6.1 1.0 N A:SER104 3.8 3.0 1.0 N A:GLY105 3.9 9.9 1.0 OP2 P:DT6 4.0 6.0 1.0 N A:VAL103 4.0 19.2 1.0 CA A:THR101 4.1 7.5 1.0 CA A:ILE106 4.1 6.6 1.0 C A:ARG102 4.1 25.3 1.0 C A:SER104 4.3 8.2 1.0 N A:ARG102 4.3 25.3 1.0 CA A:VAL103 4.3 9.8 1.0 CB A:ILE106 4.3 1.0 1.0 CA A:ARG102 4.4 24.5 1.0 O3' P:DA5 4.5 8.1 1.0 O A:ARG102 4.5 33.4 1.0 N A:GLY107 4.7 7.2 1.0 O5' P:DT6 4.7 1.0 1.0 C A:GLY105 4.8 1.2 1.0 CG2 A:ILE106 4.8 1.0 1.0 CG2 A:THR101 4.9 16.3 1.0 CB A:THR101 5.0 9.7 1.0 CA A:GLY105 5.0 5.9 1.0

Potassium binding site 2 out of 2 in the Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar)


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Dna Polymerase Beta (Pol B) (E.C.2.7.7.7) Complexed with Seven Base Pairs of Dna; Soaked in the Presence of Kcl (75 Millimolar) and MGCL2 (75 Millimolar) within 5.0Å range: probe atom residue distance (Å) B Occ A:K342 b:81.0 occ:1.00 O A:LEU62 2.2 35.4 1.0 O A:LYS60 3.1 19.1 1.0 C A:LEU62 3.4 33.7 1.0 O A:VAL65 3.6 25.4 1.0 C A:LYS60 4.3 26.0 1.0 N A:LEU62 4.3 29.3 1.0 N A:PRO63 4.3 35.0 1.0 N A:VAL65 4.3 8.2 1.0 C A:VAL65 4.3 20.6 1.0 C A:LYS61 4.4 35.7 1.0 CA A:PRO63 4.4 30.3 1.0 CA A:LEU62 4.5 29.0 1.0 O A:LYS61 4.6 34.1 1.0 CA A:VAL65 4.7 16.3 1.0 N A:GLY64 4.7 36.3 1.0 CA A:LYS61 4.9 35.3 1.0 C A:PRO63 5.0 31.2 1.0

H.Pelletier, M.R.Sawaya. Characterization of the Metal Ion Binding Helix-Hairpin-Helix Motifs in Human Dna Polymerase Beta By X-Ray Structural Analysis. Biochemistry V. 35 12778 1996.
ISSN: ISSN 0006-2960
PubMed: 8841120
DOI: 10.1021/BI960790I