6CNM Membrane Protein date Mar 08, 2018
title Cryo-Em Structure Of The Human Sk4calmodulin Channel Comple
authors C.H.Lee, R.Mackinnon
compound source
Molecule: Intermediate Conductance Calcium-Activated Potass Channel Protein 4;
Chain: A, B, C, D
Synonym: Sk4 Channel, Skca4, Ikca1, Ik1, Kca3.1, Kca4, Puta Gardos Channel;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Kcnn4, Ik1, Ikca1, Kca4, Sk4
Expression_system: Homo Sapiens
Expression_system_common: Human
Expression_system_taxid: 9606

Molecule: Calmodulin-1
Chain: E, F, G, H
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Calm1, Calm, Cam, Cam1
Expression_system: Homo Sapiens
Expression_system_common: Human
Expression_system_taxid: 9606
symmetry Space Group: P 1
R_factor
R_Free
crystal
cell
length a length b length c angle alpha angle beta angle gamma
1.000 1.000 1.000 90.00 90.00 90.00
method Electron Microscopyresolution 3.40 Å
ligand K, LMT, POV enzyme
Gene
Ontology
ChainFunctionProcessComponent
A, B, C, D
  • calcium-activated potassium ...


  • F, E, H, G


    Primary referenceActivation mechanism of a human SK-calmodulin channel complex elucidated by cryo-EM structures., Lee CH, MacKinnon R, Science. 2018 May 4;360(6388):508-513. doi: 10.1126/science.aas9466. PMID:29724949
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (233 Kb) [Save to disk]
  • Biological Unit Coordinates (6cnm.pdb1.gz) 223 Kb
  • LPC: Ligand-Protein Contacts for 6CNM
  • CSU: Contacts of Structural Units for 6CNM
  • Retrieve 6CNM in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 6CNM from S2C, [Save to disk]
  • View 6CNM in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 6CNM
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [6cnm_F] [6cnm_E] [6cnm_H] [6cnm_A] [6cnm_C] [6cnm_G] [6cnm_B] [6cnm_D]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Other resources with information on 6CNM
  • Community annotation for 6CNM at PDBWiki (http://pdbwiki.org)

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