Potassium in PDB 6c3z: T477A Sirhp

All present enzymatic activity of T477A Sirhp:
1.8.1.2;

The structure of T477A Sirhp, PDB code: 6c3z was solved by M.E.Stroupe, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	38.66 / 1.68
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	68.223, 77.317, 87.277, 90.00, 90.00, 90.00
R / Rfree (%)	19.4 / 24.7

The structure of T477A Sirhp also contains other interesting chemical elements:

Iron

(Fe)

5 atoms

The binding sites of Potassium atom in the T477A Sirhp (pdb code 6c3z). 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 T477A Sirhp, PDB code: 6c3z:

Potassium binding site 1 out of 1 in the T477A Sirhp


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of T477A Sirhp within 5.0Å range: probe atom residue distance (Å) B Occ A:K602 b:31.0 occ:1.00 O A:ILE362 2.6 26.2 1.0 O A:ASN395 2.8 25.6 1.0 OD1 A:ASN397 2.8 29.5 1.0 O A:HOH784 3.0 28.9 1.0 O A:HOH836 3.1 41.6 1.0 O A:GLN396 3.2 27.8 1.0 O A:HOH805 3.3 30.3 1.0 CG A:ASN397 3.5 26.1 1.0 C A:GLN396 3.6 26.3 1.0 C A:ILE362 3.8 29.8 1.0 ND2 A:ASN397 3.8 25.5 1.0 CE1 A:PHE361 3.8 29.9 1.0 CB A:GLN396 3.9 27.8 1.0 C A:ASN395 4.0 22.6 1.0 CD1 A:PHE361 4.1 28.4 1.0 N A:GLY365 4.2 30.3 1.0 CA A:GLN396 4.2 21.1 1.0 N A:ASN397 4.2 27.7 1.0 N A:ASN364 4.3 23.9 1.0 N A:ILE362 4.3 30.9 1.0 N A:GLN396 4.5 22.2 1.0 OE1 A:GLN396 4.6 27.1 1.0 CA A:ILE362 4.6 25.9 1.0 CA A:GLU363 4.6 29.3 1.0 N A:GLU363 4.6 29.9 1.0 CA A:ASN397 4.6 28.4 1.0 CZ A:PHE361 4.7 28.4 1.0 CB A:ASN397 4.7 29.6 1.0 C A:GLU363 4.7 27.8 1.0 C A:ASN364 4.8 26.9 1.0 CA A:ASN364 4.8 27.9 1.0 CA A:GLY365 4.9 23.2 1.0

M.R.Cepeda, L.Mcgarry, J.M.Pennington, J.Krzystek, M.E.Stroupe. The Role of Extended FE4S4CLUSTER Ligands in Mediating Sulfite Reductase Hemoprotein Activity. Biochim. Biophys. Acta V.1866 933 2018.
ISSN: ISSN 0006-3002
PubMed: 29852252
DOI: 10.1016/J.BBAPAP.2018.05.013