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Zinc in PDB 1ca3: Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II.

Enzymatic activity of Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II.

All present enzymatic activity of Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II.:
4.2.1.1;

Protein crystallography data

The structure of Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II., PDB code: 1ca3 was solved by S.K.Nair, D.W.Christianson, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) N/A / 2.30
Space group P 1 21 1
Cell size a, b, c (Å), α, β, γ (°) 42.700, 41.700, 73.000, 90.00, 104.60, 90.00
R / Rfree (%) n/a / n/a

Other elements in 1ca3:

The structure of Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II. also contains other interesting chemical elements:

Mercury (Hg) 1 atom

Zinc Binding Sites:

The binding sites of Zinc atom in the Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II. (pdb code 1ca3). This binding sites where shown within 5.0 Angstroms radius around Zinc atom.
In total only one binding site of Zinc was determined in the Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II., PDB code: 1ca3:

Zinc binding site 1 out of 1 in 1ca3

Go back to Zinc Binding Sites List in 1ca3
Zinc binding site 1 out of 1 in the Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II.


Mono view


Stereo pair view

A full contact list of Zinc with other atoms in the Zn binding site number 1 of Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II. within 5.0Å range:
probe atom residue distance (Å) B Occ
A:Zn262

b:4.6
occ:1.00
 NE2 A:HIS96 2.1 1.1 1.0
NE2 A:HIS94 2.2 3.7 1.0
ND1 A:HIS119 2.3 2.8 1.0
O A:HOH288 2.7 2.1 1.0
CD2 A:HIS96 3.0 1.5 1.0
CE1 A:HIS119 3.1 2.9 1.0
CD2 A:HIS94 3.1 3.8 1.0
CE1 A:HIS96 3.2 1.2 1.0
CE1 A:HIS94 3.3 3.8 1.0
CG A:HIS119 3.3 2.7 1.0
OG1 A:THR199 3.8 4.3 1.0
CB A:HIS119 3.8 2.7 1.0
OE1 A:GLU106 3.9 5.4 1.0
CG A:HIS96 4.2 1.7 1.0
O A:HOH377 4.2 0.5 1.0
ND1 A:HIS96 4.3 1.4 1.0
NE2 A:HIS119 4.3 2.9 1.0
CG A:HIS94 4.3 3.7 1.0
ND1 A:HIS94 4.4 3.7 1.0
CD2 A:HIS119 4.5 2.8 1.0
CD A:GLU106 4.8 5.4 1.0

Reference:

S.K.Nair, D.W.Christianson. Unexpected pH-Dependent Conformation of His-64, the Proton Shuttle of Carbonic Anhydrase II. J.Am.Chem.Soc. V. 113 9455 1991.
ISSN: ISSN 0002-7863
Page generated: Mon Jan 25 16:07:55 2021

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