Magnesium in PDB 1xra: Crystal Structure of S-Adenosylmethionine Synthetase

All present enzymatic activity of Crystal Structure of S-Adenosylmethionine Synthetase:
2.5.1.6;

The structure of Crystal Structure of S-Adenosylmethionine Synthetase, PDB code: 1xra was solved by F.Takusagawa, S.Kamitori, S.Misaki, G.D.Markham, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	10.00 / 3.00
Space group	P 62 2 2
Cell size a, b, c (Å), α, β, γ (°)	128.900, 128.900, 139.800, 90.00, 90.00, 120.00
R / Rfree (%)	18.9 / 26

The structure of Crystal Structure of S-Adenosylmethionine Synthetase also contains other interesting chemical elements:

Potassium

(K)

2 atoms

The binding sites of Magnesium atom in the Crystal Structure of S-Adenosylmethionine Synthetase (pdb code 1xra). This binding sites where shown within 5.0 Angstroms radius around Magnesium atom.
In total 2 binding sites of Magnesium where determined in the Crystal Structure of S-Adenosylmethionine Synthetase, PDB code: 1xra:
Jump to Magnesium binding site number: 1; 2;

Magnesium binding site 1 out of 2 in the Crystal Structure of S-Adenosylmethionine Synthetase


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Crystal Structure of S-Adenosylmethionine Synthetase within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg411 b:89.3 occ:1.00 O1 A:PO4384 2.0 74.3 1.0 OD2 A:ASP271 2.3 44.0 1.0 OD2 A:ASP118 2.5 50.7 1.0 CG A:ASP271 3.2 40.6 1.0 OD1 A:ASP271 3.2 47.2 1.0 P A:PO4384 3.5 69.7 1.0 CG A:ASP118 3.7 38.3 1.0 O1 A:PO4385 3.8 0.0 1.0 O A:GLN119 4.0 17.8 1.0 O4 A:PO4384 4.1 77.5 1.0 O2 A:PO4384 4.2 68.1 1.0 O3 A:PO4384 4.3 71.1 1.0 HZ2 A:LYS265 4.3 17.6 0.0 OD1 A:ASP118 4.6 35.8 1.0 CB A:ASP118 4.6 30.3 1.0 CB A:ASP271 4.7 26.2 1.0

Magnesium binding site 2 out of 2 in the Crystal Structure of S-Adenosylmethionine Synthetase


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 2 of Crystal Structure of S-Adenosylmethionine Synthetase within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg412 b:89.0 occ:1.00 O3 A:PO4384 2.0 71.1 1.0 O3 A:PO4385 2.1 0.1 1.0 O2 A:PO4385 2.1 0.3 1.0 P A:PO4385 2.5 0.6 1.0 O1 A:PO4385 3.1 0.0 1.0 P A:PO4384 3.4 69.7 1.0 O4 A:PO4385 3.9 0.3 1.0 O2 A:PO4384 3.9 68.1 1.0 O1 A:PO4384 4.1 74.3 1.0 O4 A:PO4384 4.4 77.5 1.0 OE2 A:GLU42 4.8 36.0 1.0 HZ3 A:LYS265 4.8 17.6 0.0

F.Takusagawa, S.Kamitori, S.Misaki, G.D.Markham. Crystal Structure of S-Adenosylmethionine Synthetase. J.Biol.Chem. V. 271 136 1996.
ISSN: ISSN 0021-9258
PubMed: 8550549
DOI: 10.1074/JBC.271.1.136