Potassium in PDB 2a1o: Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM

All present enzymatic activity of Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM:
1.14.15.1;

The structure of Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM, PDB code: 2a1o was solved by S.Nagano, T.L.Poulos, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	41.07 / 1.55
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	67.260, 62.180, 95.220, 90.00, 90.53, 90.00
R / Rfree (%)	19.7 / 21.9

The structure of Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM also contains other interesting chemical elements:

Iron

(Fe)

2 atoms

The binding sites of Potassium atom in the Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM (pdb code 2a1o). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 3 binding sites of Potassium where determined in the Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM, PDB code: 2a1o:
Jump to Potassium binding site number: 1; 2; 3;

Potassium binding site 1 out of 3 in the Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM


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 Ferrous Dioxygen Complex of T252A Cytochrome P450CAM within 5.0Å range: probe atom residue distance (Å) B Occ A:K1515 b:10.5 occ:1.00 O A:GLU84 2.7 10.6 1.0 O A:TYR96 2.8 12.0 1.0 O A:GLY93 2.9 10.3 1.0 O A:GLU94 3.0 12.5 1.0 O A:HOH1633 3.1 26.4 1.0 O A:HOH1772 3.2 21.5 1.0 C A:GLU94 3.5 12.6 1.0 CA A:GLU94 3.7 10.9 1.0 C A:TYR96 3.8 11.3 1.0 C A:GLU84 3.8 8.7 1.0 O A:HOH1798 3.9 29.4 1.0 C A:GLY93 3.9 11.5 1.0 N A:TYR96 4.1 11.4 1.0 N A:GLU94 4.3 11.0 1.0 CA A:TYR96 4.4 10.4 1.0 N A:ALA95 4.4 11.1 1.0 CA A:CYS85 4.4 9.1 1.0 CG A:GLU84 4.5 21.3 1.0 C A:ALA95 4.5 11.8 1.0 CB A:TYR96 4.6 10.7 1.0 N A:CYS85 4.6 8.7 1.0 N A:ASP97 4.8 10.4 1.0 CA A:GLU84 4.9 9.7 1.0 O A:HOH1777 4.9 34.3 1.0 CB A:CYS85 5.0 9.9 1.0 CB A:GLU94 5.0 12.6 1.0 CA A:ALA95 5.0 11.5 1.0

Potassium binding site 2 out of 3 in the Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM within 5.0Å range: probe atom residue distance (Å) B Occ A:K715 b:15.3 occ:1.00 O A:VAL18 2.8 15.4 1.0 OE2 A:GLU20 3.0 17.8 1.0 O A:PRO15 3.0 16.2 1.0 O A:PRO16 3.1 17.5 1.0 O B:HOH2518 3.1 23.3 1.0 O A:HOH1580 3.1 20.3 1.0 OG1 B:THR217 3.2 16.1 1.0 C A:PRO16 3.5 15.3 1.0 C A:VAL18 3.7 14.2 1.0 CA A:PRO16 3.7 15.1 1.0 CD A:GLU20 3.8 15.9 1.0 CD2 A:LEU14 3.8 17.4 1.0 N A:VAL18 4.0 13.6 1.0 C A:PRO15 4.0 15.9 1.0 O A:HOH1663 4.0 25.3 1.0 CG A:LEU14 4.1 17.0 1.0 N B:THR217 4.1 17.8 1.0 OE1 A:GLU20 4.1 18.6 1.0 N A:PRO16 4.3 15.4 1.0 CB B:THR217 4.3 17.5 1.0 CA A:VAL18 4.3 14.4 1.0 O A:HOH1736 4.4 31.2 1.0 N A:HIS17 4.4 14.5 1.0 CG2 B:THR217 4.5 17.8 1.0 C A:HIS17 4.6 14.3 1.0 N A:PRO19 4.7 13.8 1.0 O A:LEU14 4.8 16.9 1.0 CA B:THR217 4.8 16.8 1.0 N A:GLU20 4.8 15.4 1.0 CA B:GLY216 4.9 22.5 1.0 CB A:VAL18 4.9 14.9 1.0 CA A:HIS17 4.9 14.6 1.0 CG A:GLU20 4.9 16.6 1.0 CA A:PRO19 4.9 14.5 1.0 CB A:LEU14 5.0 17.7 1.0

Potassium binding site 3 out of 3 in the Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Crystal Structure of Ferrous Dioxygen Complex of T252A Cytochrome P450CAM within 5.0Å range: probe atom residue distance (Å) B Occ B:K2515 b:20.1 occ:1.00 O B:GLU84 2.9 23.0 1.0 O B:TYR96 2.9 21.1 1.0 O B:GLY93 3.0 20.3 1.0 O B:GLU94 3.1 23.1 1.0 C B:GLU94 3.5 20.5 1.0 CA B:GLU94 3.8 21.8 1.0 C B:TYR96 3.9 20.3 1.0 C B:GLU84 3.9 22.0 1.0 C B:GLY93 4.1 20.0 1.0 N B:TYR96 4.2 20.7 1.0 CG B:GLU84 4.4 35.1 1.0 N B:GLU94 4.4 21.1 1.0 N B:ALA95 4.5 20.5 1.0 CA B:TYR96 4.5 19.8 1.0 C B:ALA95 4.6 19.7 1.0 CA B:CYS85 4.6 21.7 1.0 CB B:TYR96 4.7 20.0 1.0 N B:CYS85 4.7 21.6 1.0 CA B:GLU84 4.9 23.8 1.0 N B:ASP97 4.9 18.1 1.0

S.Nagano, T.L.Poulos. Crystallographic Study on the Dioxygen Complex of Wild-Type and Mutant Cytochrome P450CAM. Implications For the Dioxygen Activation Mechanism J.Biol.Chem. V. 280 31659 2005.
ISSN: ISSN 0021-9258
PubMed: 15994329
DOI: 10.1074/JBC.M505261200