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Potassium in PDB 3ifx: Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1

Protein crystallography data

The structure of Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1, PDB code: 3ifx was solved by J.A.Cieslak, P.J.Focia, A.Gross, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 24.84 / 3.56
Space group C 1 2 1
Cell size a, b, c (Å), α, β, γ (°) 130.970, 76.630, 112.970, 90.00, 125.83, 90.00
R / Rfree (%) 27.1 / 30.2

Potassium Binding Sites:

The binding sites of Potassium atom in the Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1 (pdb code 3ifx). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1, PDB code: 3ifx:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in 3ifx

Go back to Potassium Binding Sites List in 3ifx
Potassium binding site 1 out of 2 in the Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1 within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K202

b:2.0
occ:1.00
K B:K201 2.4 29.2 1.0
O B:THR75 2.5 59.6 1.0
O D:THR75 2.7 59.6 1.0
O C:THR75 2.8 0.7 1.0
OG1 B:THR75 2.9 58.1 1.0
O A:THR75 3.0 0.6 1.0
OG1 D:THR75 3.1 58.1 1.0
OG1 C:THR75 3.4 98.6 1.0
OG1 A:THR75 3.4 43.8 1.0
C B:THR75 3.5 60.3 1.0
CB B:THR75 3.6 57.5 1.0
CG2 A:THR75 3.7 61.2 1.0
C D:THR75 3.8 60.2 1.0
CB D:THR75 3.8 57.6 1.0
C41 B:TBA203 3.9 2.0 0.5
C C:THR75 4.0 55.8 1.0
C A:THR75 4.1 2.0 1.0
CG2 C:THR75 4.1 85.3 1.0
CB A:THR75 4.1 2.0 1.0
CA B:THR75 4.2 58.0 1.0
CB C:THR75 4.3 5.2 1.0
CA D:THR75 4.5 58.0 1.0
N B:VAL76 4.5 63.4 1.0
C21 B:TBA203 4.5 0.8 0.5
O C:THR74 4.6 4.9 1.0
CA B:VAL76 4.7 66.4 1.0
N D:VAL76 4.8 63.4 1.0
O D:THR74 4.8 53.4 1.0
CA A:THR75 4.8 2.0 1.0
O B:VAL76 4.8 67.2 1.0
CA C:THR75 4.8 2.0 1.0
N1 B:TBA203 4.9 9.5 0.5
O A:VAL76 4.9 50.6 1.0
O A:THR74 4.9 6.3 1.0
C42 B:TBA203 4.9 13.1 0.5
N C:VAL76 4.9 65.6 1.0
CA D:VAL76 4.9 66.3 1.0
O C:VAL76 5.0 67.0 1.0
CG2 B:THR75 5.0 57.1 1.0
CA C:VAL76 5.0 0.8 1.0

Potassium binding site 2 out of 2 in 3ifx

Go back to Potassium Binding Sites List in 3ifx
Potassium binding site 2 out of 2 in the Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Crystal Structure of the Spin-Labeled Kcsa Mutant V48R1 within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K201

b:29.2
occ:1.00
O B:THR75 2.2 59.6 1.0
K A:K202 2.4 2.0 1.0
O D:THR75 2.4 59.6 1.0
O B:VAL76 2.7 67.2 1.0
O A:THR75 2.7 0.6 1.0
O C:THR75 2.8 0.7 1.0
O A:VAL76 2.9 50.6 1.0
O C:VAL76 2.9 67.0 1.0
O D:VAL76 3.1 67.2 1.0
C B:THR75 3.3 60.3 1.0
C B:VAL76 3.4 67.5 1.0
CA B:VAL76 3.5 66.4 1.0
C D:THR75 3.5 60.2 1.0
C C:VAL76 3.7 83.7 1.0
C D:VAL76 3.8 67.5 1.0
CA D:VAL76 3.8 66.3 1.0
C A:VAL76 3.8 71.9 1.0
C C:THR75 3.8 55.8 1.0
N B:VAL76 3.9 63.4 1.0
C A:THR75 3.9 2.0 1.0
CA C:VAL76 3.9 0.8 1.0
OG1 C:THR75 4.0 98.6 1.0
CA A:VAL76 4.0 97.6 1.0
N D:VAL76 4.1 63.4 1.0
O D:HOH204 4.1 8.0 1.0
OG1 A:THR75 4.3 43.8 1.0
N C:VAL76 4.3 65.6 1.0
OG1 B:THR75 4.4 58.1 1.0
N A:VAL76 4.4 19.8 1.0
OG1 D:THR75 4.6 58.1 1.0
CA B:THR75 4.6 58.0 1.0
N B:GLY77 4.7 70.0 1.0
N C:GLY77 4.7 0.7 1.0
CA D:THR75 4.8 58.0 1.0
CB B:THR75 4.8 57.5 1.0
CB D:THR75 4.8 57.6 1.0
CB B:VAL76 4.9 66.8 1.0
N D:GLY77 5.0 70.0 1.0
N A:GLY77 5.0 73.4 1.0

Reference:

J.A.Cieslak, P.J.Focia, A.Gross. Electron Spin-Echo Envelope Modulation (Eseem) Reveals Water and Phosphate Interactions with the Kcsa Potassium Channel Biochemistry V. 49 1486 2010.
ISSN: ISSN 0006-2960
PubMed: 20092291
DOI: 10.1021/BI9016523
Page generated: Sun Dec 13 23:19:49 2020

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