Sodium in PDB 3mnj: Human Carbonic Anhydrase II Mutant K170E

All present enzymatic activity of Human Carbonic Anhydrase II Mutant K170E:
4.2.1.1;

The structure of Human Carbonic Anhydrase II Mutant K170E, PDB code: 3mnj was solved by J.F.Domsic, R.Mckenna, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.62 / 1.75
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	42.574, 41.468, 72.694, 90.00, 104.44, 90.00
R / Rfree (%)	15.7 / 19.4

The structure of Human Carbonic Anhydrase II Mutant K170E also contains other interesting chemical elements:

Zinc

(Zn)

1 atom

The binding sites of Sodium atom in the Human Carbonic Anhydrase II Mutant K170E (pdb code 3mnj). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total only one binding site of Sodium was determined in the Human Carbonic Anhydrase II Mutant K170E, PDB code: 3mnj:

Sodium binding site 1 out of 1 in the Human Carbonic Anhydrase II Mutant K170E


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Human Carbonic Anhydrase II Mutant K170E within 5.0Å range: probe atom residue distance (Å) B Occ A:Na263 b:34.0 occ:1.00 O A:HOH321 3.7 19.9 1.0 ND2 A:ASN67 3.8 18.9 1.0 NE2 A:HIS64 3.9 24.1 1.0 ND2 A:ASN62 4.0 18.3 1.0 NE2 A:GLN92 4.1 19.7 1.0 O A:HOH375 4.2 36.0 1.0 CE1 A:HIS64 4.6 25.3 1.0 CG A:ASN67 4.8 13.6 1.0 OD1 A:ASN67 4.9 15.4 1.0 O A:HOH349 4.9 22.4 1.0

J.F.Domsic, W.Williams, S.Z.Fisher, C.Tu, M.Agbandje-Mckenna, D.N.Silverman, R.Mckenna. Structural and Kinetic Study of the Extended Active Site For Proton Transfer in Human Carbonic Anhydrase II. Biochemistry V. 49 6394 2010.
ISSN: ISSN 0006-2960
PubMed: 20578724
DOI: 10.1021/BI1007645