Calcium in PDB 7sc2: Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form)

The structure of Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form), PDB code: 7sc2 was solved by J.S.Sack, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	39.02 / 1.81
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	40.935, 40.935, 128.932, 90, 90, 90
R / Rfree (%)	22.2 / 23.9

The binding sites of Calcium atom in the Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form) (pdb code 7sc2). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form), PDB code: 7sc2:

Calcium binding site 1 out of 1 in the Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form)


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of the N-Domain of Cardiac Muscle Troponin C Tethered to the Switch Region of Cardiac Muscle Troponin I (Tetragonal Form) within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca201 b:49.9 occ:1.00 OD1 A:ASP65 2.2 52.1 1.0 O A:HOH317 2.4 55.5 1.0 O A:THR71 2.4 45.9 1.0 OE1 A:GLU76 2.5 55.3 1.0 OD1 A:ASP67 2.5 63.4 1.0 OG A:SER69 2.5 55.0 1.0 OE2 A:GLU76 2.7 55.9 1.0 CD A:GLU76 2.9 54.2 1.0 CG A:ASP65 3.4 52.4 1.0 CG A:ASP67 3.5 62.8 1.0 C A:THR71 3.6 45.6 1.0 CB A:SER69 3.6 53.3 1.0 OD2 A:ASP67 3.8 65.3 1.0 OD2 A:ASP65 4.2 52.8 1.0 N A:SER69 4.2 51.9 1.0 OG1 A:THR71 4.2 47.4 1.0 CB A:ASP65 4.2 51.7 1.0 CA A:ASP65 4.3 51.0 1.0 CA A:VAL72 4.3 43.4 1.0 N A:THR71 4.4 46.6 1.0 N A:VAL72 4.4 44.4 1.0 N A:ASP73 4.4 42.9 1.0 CA A:SER69 4.4 51.6 1.0 CG A:GLU76 4.4 48.0 1.0 CA A:THR71 4.5 46.2 1.0 OD2 A:ASP73 4.5 52.8 1.0 N A:ASP67 4.6 56.5 1.0 N A:GLU66 4.7 54.5 1.0 CB A:ASP67 4.7 58.1 1.0 C A:ASP65 4.7 53.4 1.0 C A:VAL72 4.8 43.3 1.0 CG A:ASP73 4.9 50.3 1.0 N A:GLY70 4.9 49.7 1.0 C A:SER69 4.9 50.8 1.0

C.Yan, J.S.Sack. X-Ray Structure of A Human Cardiac Muscle Troponin C / Troponin I Chimera in Two Crystal Forms Acta Crystallogr.,Sect.F 2021.
ISSN: ESSN 2053-230X