Chemical elements
  Potassium
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    Chemical Properties
    PDB 1a3w-1dul
    PDB 1dz4-1j95
    PDB 1jbr-1lqp
      1jbr
      1jbs
      1jbt
      1jci
      1jdb
      1jdr
      1jf8
      1jfv
      1jg5
      1jj2
      1jjw
      1jpq
      1jqf
      1jr1
      1jrn
      1jsc
      1jvj
      1jwv
      1k28
      1k4c
      1k4d
      1k6y
      1k73
      1k8a
      1k8p
      1k9m
      1kax
      1kay
      1kaz
      1kc8
      1kd1
      1kee
      1keq
      1kf1
      1kf6
      1kp8
      1kqs
      1krj
      1l1h
      1l2x
      1l8h
      1l8i
      1lhr
      1li0
      1li9
      1ljl
      1lju
      1lk0
      1lqk
      1lqp
    PDB 1lrt-1o07
    PDB 1o76-1qb9
    PDB 1qj5-1t86
    PDB 1t87-1vq9
    PDB 1vqk-1yj9
    PDB 1yjn-2aop
    PDB 2apo-2f4v
    PDB 2fbw-2hg9
    PDB 2hh1-2oij
    PDB 2oiy-2uxb
    PDB 2uxc-2x20
    PDB 2x21-3c0y
    PDB 3c0z-3dix
    PDB 3diy-3f5w
    PDB 3f7j-3hqo
    PDB 3hqp-3l01
    PDB 3l0u-3oi5
    PDB 3oia-3r9b
    PDB 3rde-4e6k
    PDB 4edj-8gep

Potassium in the structure of Potassium Channel Kcsa-Fab Complex in Low Concentration of K+ (pdb 1k4d)






The binding sites of Potassium atom in the structure of Potassium Channel Kcsa-Fab Complex in Low Concentration of K+ (pdb code 1k4d). This binding sites where shown with 5.0 Angstroms radius around Potassium atom.
The 1k4d structure was solved by Y.ZHOU, J.H.MORAIS-CABRAL, A.KAUFMAN, R.MACKINNON, with X-Ray Crystallography technique, brief refinement statistics is given in the table below:
Resolution (A)30.0-2.3
Space groupI4
a (A)155.290
b (A)155.290
c (A)75.740
alpha (°)90.00
beta (°)90.00
gamma (°)90.00
Rfactor (%)21.8
Rfree (%)23.5


Potassium Binding Sites:

Potassium binding site 1 out of 2 in 1k4d


Potassium binding site 1 out of 2 in 1k4d
Click to enlarge
stereopicture of Potassium binding site 1 out of 2 in 1k4d
Click to enlarge
Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 1k4d. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere
Residues shown as a stick model or VDW spheres: C: Gly77, C: Tyr78, C: Gly79, C: Hoh2005,

conact list:


AtomAtomDistance (A)
KO C:Gly772.79
KC C:Gly773.74
KCA C:Gly774.45
KO C:Tyr783.96
KN C:Tyr784.60
KC C:Tyr784.02
KCA C:Tyr784.68
KN C:Gly794.14
KCA C:Gly794.24
KO C:Hoh20054.39

interactive model:


Potassium binding site 2 out of 2 in 1k4d


Potassium binding site 2 out of 2 in 1k4d
Click to enlarge
stereopicture of Potassium binding site 2 out of 2 in 1k4d
Click to enlarge
Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Potassium in the PDB 1k4d. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphere
Residues shown as a stick model or VDW spheres: C: Thr75, C: Hoh2004, C: Hoh2043,

conact list:


AtomAtomDistance (A)
KO C:Thr752.90
KCB C:Thr753.59
KCG2 C:Thr754.78
KOG1 C:Thr753.03
KC C:Thr754.00
KCA C:Thr754.49
KO C:Hoh20043.34
KO C:Hoh20433.33

interactive model:




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