Calcium in PDB 1a2x: Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I

The structure of Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I, PDB code: 1a2x was solved by D.G.Vassylyev, S.Takeda, S.Wakatsuki, K.Maeda, Y.Maeda, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	10.00 / 2.30
Space group	P 32 2 1
Cell size a, b, c (Å), α, β, γ (°)	46.900, 46.900, 152.300, 90.00, 90.00, 120.00
R / Rfree (%)	22.2 / 32.5

The binding sites of Calcium atom in the Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I (pdb code 1a2x). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I, PDB code: 1a2x:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca160 b:2.0 occ:1.00 OE2 A:GLU114 2.2 12.9 1.0 OD1 A:ASP103 2.2 31.4 1.0 OE1 A:GLU114 2.3 21.0 1.0 OD1 A:ASP107 2.3 30.7 1.0 OD1 A:ASN105 2.3 42.7 1.0 CD A:GLU114 2.6 12.3 1.0 O A:TYR109 2.6 32.3 1.0 CG A:ASP107 3.0 26.7 1.0 OD2 A:ASP107 3.1 23.8 1.0 CG A:ASN105 3.2 30.8 1.0 ND2 A:ASN105 3.3 39.0 1.0 CG A:ASP103 3.5 27.6 1.0 C A:TYR109 3.5 29.6 1.0 CG A:GLU114 4.1 17.3 1.0 N A:ILE110 4.2 35.3 1.0 OD2 A:ASP111 4.2 37.6 1.0 OD2 A:ASP103 4.2 24.9 1.0 CA A:ILE110 4.2 32.1 1.0 CA A:ASP103 4.3 27.1 1.0 N A:ASP107 4.4 27.0 1.0 CB A:ASP103 4.4 26.8 1.0 CA A:TYR109 4.5 25.7 1.0 CB A:ASP107 4.5 29.2 1.0 N A:ASN105 4.5 34.1 1.0 N A:ASP111 4.5 38.3 1.0 N A:TYR109 4.5 29.7 1.0 CG A:ASP111 4.6 40.7 1.0 N A:ARG104 4.6 35.4 1.0 CB A:ASN105 4.6 35.1 1.0 CB A:TYR109 4.6 30.2 1.0 N A:ALA106 4.7 31.0 1.0 C A:ASP103 4.7 33.3 1.0 C A:ILE110 4.8 36.4 1.0 OD1 A:ASP111 4.8 48.8 1.0 CB A:GLU114 4.9 22.2 1.0 CA A:ASP107 5.0 31.7 1.0 CA A:ASN105 5.0 36.2 1.0

Calcium binding site 2 out of 2 in the Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Complex of Troponin C with A 47 Residue (1-47) Fragment of Troponin I within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca161 b:2.0 occ:1.00 OD1 A:ASN141 2.2 63.0 1.0 OE1 A:GLU150 2.2 50.8 1.0 OD1 A:ASP139 2.4 37.1 1.0 OE2 A:GLU150 2.5 60.0 1.0 OD1 A:ASP143 2.6 60.7 1.0 CD A:GLU150 2.7 48.4 1.0 O A:ARG145 2.8 57.2 1.0 CG A:ASN141 3.0 66.9 1.0 CG A:ASP143 3.0 61.1 1.0 OD2 A:ASP143 3.0 58.1 1.0 ND2 A:ASN141 3.3 68.0 1.0 CG A:ASP139 3.7 60.0 1.0 N A:ASP143 3.7 62.1 1.0 C A:ARG145 3.8 50.8 1.0 N A:ASN141 3.9 64.6 1.0 N A:ASN142 4.0 66.1 1.0 N A:LYS140 4.1 62.3 1.0 CB A:ASP143 4.1 58.1 1.0 CB A:ASN141 4.2 61.2 1.0 CA A:ASP139 4.2 61.8 1.0 CG A:GLU150 4.2 43.3 1.0 CA A:ILE146 4.3 32.9 1.0 CA A:ASP143 4.4 55.4 1.0 N A:ILE146 4.5 41.5 1.0 CA A:ASN141 4.5 63.5 1.0 OD2 A:ASP139 4.5 61.3 1.0 C A:ASN141 4.5 65.5 1.0 CB A:ASP139 4.5 59.1 1.0 N A:ARG145 4.6 51.2 1.0 C A:ASP139 4.6 59.9 1.0 OD2 A:ASP147 4.6 38.0 1.0 C A:ASN142 4.6 65.9 1.0 CA A:ASN142 4.7 65.7 1.0 N A:GLY144 4.8 50.0 1.0 CA A:ARG145 4.8 54.5 1.0 C A:ASP143 4.9 52.7 1.0 N A:ASP147 4.9 23.5 1.0 CG1 A:ILE146 5.0 40.6 1.0 C A:LYS140 5.0 64.6 1.0

D.G.Vassylyev, S.Takeda, S.Wakatsuki, K.Maeda, Y.Maeda. Crystal Structure of Troponin C in Complex with Troponin I Fragment at 2.3-A Resolution. Proc.Natl.Acad.Sci.Usa V. 95 4847 1998.
ISSN: ISSN 0027-8424
PubMed: 9560191
DOI: 10.1073/PNAS.95.9.4847