Calcium in PDB 2a42: Actin-Dnase I Complex

All present enzymatic activity of Actin-Dnase I Complex:
3.1.21.1;

The structure of Actin-Dnase I Complex, PDB code: 2a42 was solved by D.Chereau, F.Kerff, R.Dominguez, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	38.70 / 1.85
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	152.729, 41.484, 117.905, 90.00, 109.28, 90.00
R / Rfree (%)	16.1 / 19.9

The structure of Actin-Dnase I Complex also contains other interesting chemical elements:

Magnesium

(Mg)

1 atom

The binding sites of Calcium atom in the Actin-Dnase I Complex (pdb code 2a42). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Actin-Dnase I Complex, PDB code: 2a42:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Actin-Dnase I Complex


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Actin-Dnase I Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca1381 b:36.0 occ:1.00 O A:HOH1430 2.4 21.7 1.0 O1B A:ATP1380 2.4 35.5 1.0 O A:HOH1410 2.4 23.7 1.0 O2G A:ATP1380 2.4 33.2 1.0 O A:HOH1396 2.4 21.6 1.0 O A:HOH1449 2.5 19.0 1.0 O A:HOH1572 2.5 23.5 1.0 PG A:ATP1380 3.5 35.1 1.0 PB A:ATP1380 3.6 34.6 1.0 O3G A:ATP1380 3.9 33.1 1.0 O3B A:ATP1380 4.0 35.7 1.0 O A:HOH1406 4.2 18.1 1.0 NE2 A:GLN137 4.2 39.6 1.0 CA A:GLY13 4.3 40.6 1.0 O3A A:ATP1380 4.3 37.6 1.0 O1A A:ATP1380 4.3 38.1 1.0 NZ A:LYS18 4.4 41.8 1.0 O A:HOH1385 4.5 27.8 1.0 CD A:GLN137 4.5 46.0 1.0 O A:HOH1493 4.6 26.6 1.0 OD1 A:ASP11 4.7 45.4 1.0 OD2 A:ASP154 4.7 53.3 1.0 OD1 A:ASP154 4.7 56.4 1.0 OD2 A:ASP11 4.7 44.1 1.0 PA A:ATP1380 4.8 35.7 1.0 O2B A:ATP1380 4.8 31.9 1.0 O1G A:ATP1380 4.9 36.6 1.0 OE1 A:GLN137 4.9 51.2 1.0

Calcium binding site 2 out of 2 in the Actin-Dnase I Complex


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Actin-Dnase I Complex within 5.0Å range: probe atom residue distance (Å) B Occ B:Ca1272 b:37.6 occ:1.00 O B:THR203 2.4 38.3 1.0 O B:HOH1291 2.4 28.5 1.0 OD2 B:ASP201 2.5 37.1 1.0 O B:THR207 2.5 42.0 1.0 O B:THR205 2.5 41.4 1.0 OD1 B:ASP201 2.5 38.8 1.0 OG1 B:THR203 2.7 41.1 1.0 CG B:ASP201 2.8 35.9 1.0 C B:THR203 3.3 39.8 1.0 C B:THR205 3.7 41.5 1.0 C B:THR207 3.7 42.0 1.0 CB B:THR203 3.8 42.1 1.0 CA B:THR203 3.9 40.4 1.0 N B:THR203 4.2 39.5 1.0 N B:THR205 4.2 40.9 1.0 N B:THR207 4.2 41.9 1.0 N B:ALA204 4.3 39.6 1.0 CB B:ASP201 4.3 38.2 1.0 C B:ALA204 4.4 40.5 1.0 C B:SER206 4.4 41.2 1.0 N B:SER206 4.6 40.4 1.0 CA B:SER206 4.6 40.5 1.0 CA B:THR207 4.6 42.6 1.0 N B:ASN208 4.6 40.6 1.0 CA B:ASN208 4.6 38.9 1.0 CA B:THR205 4.6 41.0 1.0 CA B:ALA204 4.6 40.8 1.0 OG1 B:THR207 4.8 42.9 1.0 OH B:TYR253 4.8 39.0 1.0 O B:ALA204 4.8 39.7 1.0 CE2 B:TYR253 4.8 40.8 1.0 OG1 B:THR205 4.8 43.9 1.0 CG2 B:THR203 4.9 40.2 1.0 O B:SER206 5.0 39.8 1.0

D.Chereau, F.Kerff, P.Graceffa, Z.Grabarek, K.Langsetmo, R.Dominguez. Actin-Bound Structures of Wiskott-Aldrich Syndrome Protein (Wasp)-Homology Domain 2 and the Implications For Filament Assembly Proc.Natl.Acad.Sci.Usa V. 102 16644 2005.
ISSN: ISSN 0027-8424
PubMed: 16275905
DOI: 10.1073/PNAS.0507021102