Potassium in PDB 1s56: Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms

The structure of Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms, PDB code: 1s56 was solved by M.Milani, A.Pesce, Y.Ouellet, S.Dewilde, J.Friedman, P.Ascenzi, M.Guertin, M.Bolognesi, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	50.00 / 2.43
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	44.321, 61.959, 90.747, 90.00, 90.00, 90.00
R / Rfree (%)	19.4 / 27.7

The structure of Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms also contains other interesting chemical elements:

Iron	(Fe)	2 atoms
Xenon	(Xe)	8 atoms

The binding sites of Potassium atom in the Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms (pdb code 1s56). 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 "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms, PDB code: 1s56:

Potassium binding site 1 out of 1 in the Crystal Structure of "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms


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 "Truncated" Hemoglobin N (Hbn) From Mycobacterium Tuberculosis, Soaked with Xe Atoms within 5.0Å range: probe atom residue distance (Å) B Occ A:K401 b:32.4 occ:1.00 O A:GLN79 2.8 33.4 1.0 O A:GLN82 2.8 28.1 1.0 O A:VAL80 3.2 31.0 1.0 C A:VAL80 3.6 31.3 1.0 CG A:GLN82 3.7 32.4 1.0 C A:GLN79 3.9 33.5 1.0 C A:GLN82 3.9 28.7 1.0 CA A:VAL80 4.1 32.4 1.0 N A:GLN82 4.1 29.2 1.0 O A:HOH435 4.2 27.3 1.0 N A:HIS81 4.3 30.4 1.0 NE A:ARG84 4.4 26.6 1.0 C A:HIS81 4.4 29.4 1.0 CA A:GLN82 4.4 29.5 1.0 N A:VAL80 4.5 33.0 1.0 CG A:ARG84 4.5 26.5 1.0 CB A:GLN82 4.7 29.9 1.0 CA A:HIS81 4.7 29.8 1.0 CD A:GLN82 4.7 34.9 1.0 NE2 A:GLN82 4.8 34.4 1.0 NH2 A:ARG84 4.9 26.5 1.0 O A:HIS81 5.0 29.4 1.0

M.Milani, A.Pesce, Y.Ouellet, S.Dewilde, J.Friedman, P.Ascenzi, M.Guertin, M.Bolognesi. Heme-Ligand Tunneling in Group I Truncated Hemoglobins J.Biol.Chem. V. 279 21520 2004.
ISSN: ISSN 0021-9258
PubMed: 15016811
DOI: 10.1074/JBC.M401320200