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Sodium in PDB 2itc: Potassium Channel Kcsa-Fab Complex in Sodium Chloride

Protein crystallography data

The structure of Potassium Channel Kcsa-Fab Complex in Sodium Chloride, PDB code: 2itc was solved by S.W.Lockless, M.Zhou, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 42.79 / 3.20
Space group I 4
Cell size a, b, c (Å), α, β, γ (°) 155.501, 155.501, 75.820, 90.00, 90.00, 90.00
R / Rfree (%) 24.6 / 26.5

Sodium Binding Sites:

The binding sites of Sodium atom in the Potassium Channel Kcsa-Fab Complex in Sodium Chloride (pdb code 2itc). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total 2 binding sites of Sodium where determined in the Potassium Channel Kcsa-Fab Complex in Sodium Chloride, PDB code: 2itc:
Jump to Sodium binding site number: 1; 2;

Sodium binding site 1 out of 2 in 2itc

Go back to Sodium Binding Sites List in 2itc
Sodium binding site 1 out of 2 in the Potassium Channel Kcsa-Fab Complex in Sodium Chloride


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Potassium Channel Kcsa-Fab Complex in Sodium Chloride within 5.0Å range:
probe atom residue distance (Å) B Occ
C:Na125

b:80.7
occ:0.25
O C:GLY77 2.5 0.1 1.0
C C:GLY77 3.4 99.7 1.0
CA C:GLY77 3.8 90.4 1.0
C C:TYR78 4.5 64.7 1.0
N C:TYR78 4.5 85.0 1.0
O C:TYR78 4.5 59.2 1.0
CA C:TYR78 4.7 70.9 1.0
N C:GLY79 4.8 54.7 1.0

Sodium binding site 2 out of 2 in 2itc

Go back to Sodium Binding Sites List in 2itc
Sodium binding site 2 out of 2 in the Potassium Channel Kcsa-Fab Complex in Sodium Chloride


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 2 of Potassium Channel Kcsa-Fab Complex in Sodium Chloride within 5.0Å range:
probe atom residue distance (Å) B Occ
C:Na126

b:74.1
occ:0.25
OG1 C:THR75 3.3 86.0 1.0
O C:HOH127 4.2 70.5 0.2
CB C:THR75 4.3 71.7 1.0
O C:THR75 4.5 70.7 1.0
CG2 C:THR75 5.0 87.0 1.0

Reference:

S.W.Lockless, M.Zhou, R.Mackinnon. Structural and Thermodynamic Properties of Selective Ion Binding in A K(+) Channel. Plos Biol. V. 5 E121 2007.
ISSN: ISSN 1544-9173
PubMed: 17472437
DOI: 10.1371/JOURNAL.PBIO.0050121
Page generated: Tue Dec 15 05:51:19 2020

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