Arsenic in PDB 2pq3: N-Terminal Calmodulin Zn-Trapped Intermediate

The structure of N-Terminal Calmodulin Zn-Trapped Intermediate, PDB code: 2pq3 was solved by J.T.Warren, Q.Guo, W.J.Tang, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	32.00 / 1.30
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	35.211, 35.211, 143.294, 90.00, 90.00, 90.00
R / Rfree (%)	14.3 / 19.2

The structure of N-Terminal Calmodulin Zn-Trapped Intermediate also contains other interesting chemical elements:

Zinc

(Zn)

3 atoms

The binding sites of Arsenic atom in the N-Terminal Calmodulin Zn-Trapped Intermediate (pdb code 2pq3). This binding sites where shown within 5.0 Angstroms radius around Arsenic atom.
In total only one binding site of Arsenic was determined in the N-Terminal Calmodulin Zn-Trapped Intermediate, PDB code: 2pq3:

Arsenic binding site 1 out of 1 in the N-Terminal Calmodulin Zn-Trapped Intermediate


Mono view


Stereo pair view

A full contact list of Arsenic with other atoms in the As binding site number 1 of N-Terminal Calmodulin Zn-Trapped Intermediate within 5.0Å range: probe atom residue distance (Å) B Occ A:As200 b:18.7 occ:1.00 AS A:CAC200 0.0 18.7 1.0 O1 A:CAC200 1.7 17.2 1.0 O2 A:CAC200 1.7 17.6 1.0 C1 A:CAC200 1.9 19.2 1.0 C2 A:CAC200 2.0 20.9 1.0 ZN A:ZN202 3.2 18.1 1.0 O A:HOH228 3.8 35.0 1.0 OD2 A:ASP22 3.9 18.0 1.0 O A:HOH203 4.1 18.1 1.0 OD2 A:ASP24 4.6 20.0 1.0 O A:HOH215 4.6 29.9 1.0

J.T.Warren, Q.Guo, W.J.Tang. A 1.3-A Structure of Zinc-Bound N-Terminal Domain of Calmodulin Elucidates Potential Early Ion-Binding Step. J.Mol.Biol. V. 374 517 2007.
ISSN: ISSN 0022-2836
PubMed: 17942116
DOI: 10.1016/J.JMB.2007.09.048