Potassium in PDB 4kn1: Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin

The structure of Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin, PDB code: 4kn1 was solved by A.S.Wibowo, C.E.Dann Iii, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	48.54 / 2.30
Space group	P 61 2 2
Cell size a, b, c (Å), α, β, γ (°)	97.075, 97.075, 98.955, 90.00, 90.00, 120.00
R / Rfree (%)	18.8 / 23.6

The structure of Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin also contains other interesting chemical elements:

Chlorine

(Cl)

3 atoms

The binding sites of Potassium atom in the Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin (pdb code 4kn1). 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 Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin, PDB code: 4kn1:

Potassium binding site 1 out of 1 in the Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Human Folate Receptor Beta (FOLR2) in Complex with the Antifolate Aminopterin within 5.0Å range: probe atom residue distance (Å) B Occ A:K302 b:33.4 occ:1.00 OG A:SER104 3.3 29.2 1.0 NE1 A:TRP54 3.4 25.7 1.0 ND2 A:ASN214 3.4 28.4 1.0 ND2 A:ASN216 3.5 30.6 1.0 ND2 A:ASN106 3.6 32.6 1.0 OD1 A:ASN214 3.7 31.6 1.0 CB A:ASN216 3.8 21.2 1.0 CB A:SER104 3.8 27.1 1.0 CG A:ASN214 4.0 31.8 1.0 CD1 A:LEU100 4.0 26.9 1.0 CD1 A:TRP54 4.1 30.0 1.0 CG A:ASN216 4.1 27.7 1.0 CB A:ASN106 4.2 21.8 1.0 CA A:SER104 4.2 25.7 1.0 CD A:PRO105 4.2 23.6 1.0 CE1 A:PHE208 4.3 26.2 1.0 CE2 A:TRP54 4.3 26.8 1.0 CG A:ASN106 4.4 29.8 1.0 CZ A:PHE208 4.4 29.0 1.0 CZ2 A:TRP54 4.7 20.5 1.0 N A:PRO105 4.8 23.4 1.0 N A:ASN106 4.8 22.0 1.0 C A:SER104 5.0 25.6 1.0

A.S.Wibowo, M.Singh, K.M.Reeder, J.J.Carter, A.R.Kovach, W.Meng, M.Ratnam, F.Zhang, C.E.Dann. Structures of Human Folate Receptors Reveal Biological Trafficking States and Diversity in Folate and Antifolate Recognition. Proc.Natl.Acad.Sci.Usa V. 110 15180 2013.
ISSN: ISSN 0027-8424
PubMed: 23934049
DOI: 10.1073/PNAS.1308827110