Potassium in PDB 5um9: Flap Endonuclease 1 (FEN1) D86N with 5'-Flap Substrate Dna and SM3+

The structure of Flap Endonuclease 1 (FEN1) D86N with 5'-Flap Substrate Dna and SM3+, PDB code: 5um9 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)	19.67 / 2.81
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	105.846, 105.846, 100.709, 90.00, 90.00, 120.00
R / Rfree (%)	20.8 / 26.6

The structure of Flap Endonuclease 1 (FEN1) D86N 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) D86N with 5'-Flap Substrate Dna and SM3+ (pdb code 5um9). 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) D86N with 5'-Flap Substrate Dna and SM3+, PDB code: 5um9:

Potassium binding site 1 out of 1 in the Flap Endonuclease 1 (FEN1) D86N 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) D86N with 5'-Flap Substrate Dna and SM3+ within 5.0Å range: probe atom residue distance (Å) B Occ A:K401 b:0.1 occ:1.00 HG A:SER237 2.6 0.1 1.0 OP1 D:DT5 2.9 0.8 1.0 O A:ILE241 2.9 1.0 1.0 OG A:SER237 3.1 0.7 1.0 HB2 A:SER237 3.1 0.4 1.0 O A:ILE238 3.5 0.7 1.0 O A:HOH512 3.5 0.2 1.0 CB A:SER237 3.6 0.3 1.0 HA2 A:GLY242 3.9 0.7 1.0 O A:LEU229 4.0 0.5 1.0 P D:DT5 4.0 0.9 1.0 C A:ILE241 4.1 0.7 1.0 HB3 A:SER237 4.1 0.4 1.0 O A:LEU230 4.2 0.9 1.0 OP2 D:DT5 4.2 0.2 1.0 H A:ILE241 4.2 0.8 1.0 C A:ILE238 4.6 0.6 1.0 H A:GLY240 4.6 0.7 1.0 HA A:ARG239 4.7 0.3 1.0 CA A:GLY242 4.7 0.2 1.0 C A:SER237 4.8 0.8 1.0 N A:ILE238 4.8 0.4 1.0 N A:ILE241 4.8 0.5 1.0 H A:ILE238 4.8 0.4 1.0 CA A:SER237 4.8 0.0 1.0 N A:GLY242 4.8 0.1 1.0 C A:LEU230 4.9 1.0 1.0 HA A:LEU230 5.0 0.3 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