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Calcium in PDB 1q23: Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution

Enzymatic activity of Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution

All present enzymatic activity of Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution:
2.3.1.28;

Protein crystallography data

The structure of Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution, PDB code: 1q23 was solved by A.Roidis, M.Kokkinidis, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 111.80 / 2.18
Space group P 1 21 1
Cell size a, b, c (Å), α, β, γ (°) 115.354, 129.198, 118.073, 90.00, 108.30, 90.00
R / Rfree (%) 19.2 / 26.3

Calcium Binding Sites:

The binding sites of Calcium atom in the Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution (pdb code 1q23). 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 Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution, PDB code: 1q23:

Calcium binding site 1 out of 1 in 1q23

Go back to Calcium Binding Sites List in 1q23
Calcium binding site 1 out of 1 in the Crystal Structure of Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution


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 Chloramphenicol Acetyltransferase I Complexed with Fusidic Acid at 2.18 A Resolution within 5.0Å range:
probe atom residue distance (Å) B Occ
A:Ca801

b:5.3
occ:0.50
 O A:HOH840 2.2 22.2 1.0
O A:ASN68 2.4 18.4 1.0
O A:HOH817 2.6 12.5 1.0
O A:HOH858 2.7 22.3 1.0
C A:ASN68 3.5 17.3 1.0
CA A:ALA69 4.1 16.8 1.0
N A:ALA69 4.2 18.1 1.0
OD1 A:ASP111 4.5 26.0 1.0
CB A:ASN68 4.6 18.1 1.0
CA A:ASN68 4.7 18.8 1.0
CB A:ALA69 4.7 18.0 1.0
OD2 A:ASP111 4.7 21.0 1.0

Reference:

A.Roidis, M.Kokkinidis. Crystal Structure of Chloramphenicol Acetyltransferase I in the Apoenzyme Form and Complexed with Fusidic Acid at 2.18 A Resolution To Be Published.
Page generated: Mon Jul 7 18:21:12 2025

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