Potassium in PDB 3vjf: Crystal Structure of De Novo 4-Helix Bundle Protein WA20

The structure of Crystal Structure of De Novo 4-Helix Bundle Protein WA20, PDB code: 3vjf was solved by R.Arai, A.Kimura, N.Kobayashi, K.Matsuo, T.Sato, A.F.Wang, J.M.Platt, L.H.Bradley, M.H.Hecht, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	50.00 / 2.20
Space group	P 21 21 2
Cell size a, b, c (Å), α, β, γ (°)	65.950, 102.858, 31.344, 90.00, 90.00, 90.00
R / Rfree (%)	23.3 / 25.5

The binding sites of Potassium atom in the Crystal Structure of De Novo 4-Helix Bundle Protein WA20 (pdb code 3vjf). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total only one binding site of Potassium was determined in the Crystal Structure of De Novo 4-Helix Bundle Protein WA20, PDB code: 3vjf:

Potassium binding site 1 out of 1 in the Crystal Structure of De Novo 4-Helix Bundle Protein WA20


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystal Structure of De Novo 4-Helix Bundle Protein WA20 within 5.0Å range: probe atom residue distance (Å) B Occ A:K201 b:22.3 occ:0.50 O A:ASN51 2.5 32.3 1.0 O A:MSE48 2.7 34.4 1.0 O A:GLN49 3.0 40.6 1.0 O A:HOH117 3.5 4.8 1.0 C A:ASN51 3.8 33.6 1.0 C A:GLN49 3.8 38.1 1.0 C A:MSE48 3.9 32.9 1.0 O A:HOH129 4.0 3.1 1.0 CA A:GLN49 4.2 35.9 1.0 N A:ASN51 4.5 37.9 1.0 N A:GLN49 4.5 33.1 1.0 C A:GLY50 4.6 40.0 1.0 CA A:ASN51 4.6 35.5 1.0 N A:GLN52 4.7 34.2 1.0 O A:GLY50 4.7 40.3 1.0 CG A:GLN52 4.7 33.9 1.0 N A:GLY50 4.8 42.9 1.0 CA A:GLN52 4.8 34.3 1.0

R.Arai, N.Kobayashi, A.Kimura, T.Sato, K.Matsuo, A.F.Wang, J.M.Platt, L.H.Bradley, M.H.Hecht. Domain-Swapped Dimeric Structure of A Stable and Functional De Novo Four-Helix Bundle Protein, WA20 J.Phys.Chem.B V. 116 6789 2012.
ISSN: ISSN 1089-5647
PubMed: 22397676
DOI: 10.1021/JP212438H