Potassium in PDB 5kse: Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+

The structure of Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+, PDB code: 5kse was solved by S.E.Tsutakawa, A.S.Arvai, J.A.Tainer, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	37.00 / 2.11
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	105.235, 105.235, 104.064, 90.00, 90.00, 120.00
R / Rfree (%)	20.8 / 24.5

The structure of Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+ also contains other interesting chemical elements:

Samarium

(Sm)

5 atoms

The binding sites of Potassium atom in the Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+ (pdb code 5kse). 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 Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+, PDB code: 5kse:

Potassium binding site 1 out of 1 in the Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Flap Endonuclease 1 (FEN1) R100A with 5'-Flap Substrate Dna and SM3+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K404 b:0.8 occ:1.00 O A:HOH530 2.7 82.3 1.0 HG A:SER237 2.8 0.9 1.0 OP1 D:DT5 2.9 90.6 1.0 O A:ILE238 2.9 91.6 1.0 OG A:SER237 3.1 93.2 1.0 HB2 A:SER237 3.2 91.1 1.0 O A:ILE241 3.4 81.2 1.0 HA A:ARG239 3.7 99.1 1.0 CB A:SER237 3.7 75.8 1.0 OP2 D:DT5 3.7 1.0 1.0 P D:DT5 3.8 89.8 1.0 C A:ILE238 3.8 88.5 1.0 H A:ILE238 4.1 0.6 1.0 H A:ILE241 4.2 0.5 1.0 H A:GLY240 4.3 99.9 1.0 N A:ILE238 4.3 87.1 1.0 HB3 A:SER237 4.3 91.1 1.0 C A:ILE241 4.4 83.9 1.0 O A:LEU229 4.4 86.9 1.0 CA A:ARG239 4.4 82.5 1.0 N A:ARG239 4.5 83.7 1.0 HA2 A:GLY242 4.6 97.3 1.0 C A:SER237 4.6 76.9 1.0 CA A:ILE238 4.7 78.0 1.0 N A:GLY240 4.8 83.1 1.0 CA A:SER237 4.8 79.3 1.0 N A:ILE241 4.8 91.1 1.0 HB A:ILE241 4.8 0.6 1.0 O3' D:DC4 4.9 88.5 1.0 O5' D:DT5 5.0 98.0 1.0

S.E.Tsutakawa, M.J.Thompson, A.S.Arvai, A.J.Neil, S.J.Shaw, S.I.Algasaier, J.C.Kim, L.D.Finger, E.Jardine, V.J.B.Gotham, A.H.Sarker, M.Z.Her, F.Rashid, S.M.Hamdan, S.M.Mirkin, J.A.Grasby, J.A.Tainer. Phosphate Steering By Flap Endonuclease 1 Promotes 5'-Flap Specificity and Incision to Prevent Genome Instability. Nat Commun V. 8 15855 2017.
ISSN: ESSN 2041-1723
PubMed: 28653660
DOI: 10.1038/NCOMMS15855