Potassium in PDB 7x97: Crystal Structure of Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex

The structure of Crystal Structure of Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex, PDB code: 7x97 was solved by S.H.Kao, R.B.Satange, M.H.Hou, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	25.57 / 1.95
Space group	P 63 2 2
Cell size a, b, c (Å), α, β, γ (°)	43.452, 43.452, 139.365, 90, 90, 120
R / Rfree (%)	22.9 / 28.2

The structure of Crystal Structure of Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex also contains other interesting chemical elements:

Zinc	(Zn)	5 atoms
Chlorine	(Cl)	2 atoms

The binding sites of Potassium atom in the Crystal Structure of Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex (pdb code 7x97). 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 Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex, PDB code: 7x97:

Potassium binding site 1 out of 1 in the Crystal Structure of Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex


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 Actinomycin D-Echinomycin-D(Agcccgt/Acgggct) Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:K104 b:43.5 occ:0.33 CL A:CL105 2.8 55.7 0.3 OP1 A:DA1 2.9 86.1 1.0 P A:DA1 3.2 87.8 1.0 OP2 A:DA1 3.5 90.8 1.0 O5' A:DA1 4.8 46.9 1.0

R.Satange, S.H.Kao, C.M.Chien, S.H.Chou, C.C.Lin, S.Neidle, M.H.Hou. Staggered Intercalation of Dna Duplexes with Base-Pair Modulation By Two Distinct Drug Molecules Induces Asymmetric Backbone Twisting and Structure Polymorphism. Nucleic Acids Res. V. 50 8867 2022.
ISSN: ESSN 1362-4962
PubMed: 35871296
DOI: 10.1093/NAR/GKAC629