Potassium in PDB 4y1n: Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine

The structure of Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine, PDB code: 4y1n was solved by C.Zhao, K.R.Rajashankar, M.Marcia, A.M.Pyle, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	44.44 / 3.00
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	83.738, 131.200, 84.640, 90.00, 91.71, 90.00
R / Rfree (%)	18.3 / 24.6

The structure of Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine also contains other interesting chemical elements:

Magnesium	(Mg)	8 atoms
Iridium	(Ir)	28 atoms

The binding sites of Potassium atom in the Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine (pdb code 4y1n). 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 Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine, PDB code: 4y1n:

Potassium binding site 1 out of 1 in the Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Oceanobacillus Iheyensis Group II Intron Domain 1 with Iridium Hexamine within 5.0Å range: probe atom residue distance (Å) B Occ B:K421 b:0.3 occ:1.00 N7 B:G194 3.9 62.3 1.0 O4 B:U195 4.0 0.4 1.0 C8 B:G194 4.5 57.0 1.0 OP1 B:A192 4.7 77.8 1.0 OP2 B:A193 4.8 66.2 1.0 OP2 B:A192 4.9 92.5 1.0 C4 B:U195 4.9 95.7 1.0 N7 B:A193 5.0 97.4 1.0

C.Zhao, K.R.Rajashankar, M.Marcia, A.M.Pyle. Crystal Structure of Group II Intron Domain 1 Reveals A Template For Rna Assembly. Nat.Chem.Biol. V. 11 967 2015.
ISSN: ESSN 1552-4469
PubMed: 26502156
DOI: 10.1038/NCHEMBIO.1949