6C3O

Cryo-EM structure of human KATP bound to ATP and ADP in quatrefoil form


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Molecular structure of human KATP in complex with ATP and ADP

Lee, K.P.K.Chen, J.MacKinnon, R.

(2017) Elife 6

  • DOI: 10.7554/eLife.32481
  • Primary Citation of Related Structures:  
    6C3O, 6C3P

  • PubMed Abstract: 
  • In many excitable cells, KATP channels respond to intracellular adenosine nucleotides: ATP inhibits while ADP activates. We present two structures of the human pancreatic KATP channel, containing the ABC transporter SUR1 and the inward-rectifier K + channel Kir6 ...

    In many excitable cells, KATP channels respond to intracellular adenosine nucleotides: ATP inhibits while ADP activates. We present two structures of the human pancreatic KATP channel, containing the ABC transporter SUR1 and the inward-rectifier K + channel Kir6.2, in the presence of Mg 2+ and nucleotides. These structures, referred to as quatrefoil and propeller forms, were determined by single-particle cryo-EM at 3.9 Å and 5.6 Å, respectively. In both forms, ATP occupies the inhibitory site in Kir6.2. The nucleotide-binding domains of SUR1 are dimerized with Mg 2+ -ATP in the degenerate site and Mg 2+ -ADP in the consensus site. A lasso extension forms an interface between SUR1 and Kir6.2 adjacent to the ATP site in the propeller form and is disrupted in the quatrefoil form. These structures support the role of SUR1 as an ADP sensor and highlight the lasso extension as a key regulatory element in ADP's ability to override ATP inhibition.


    Organizational Affiliation

    Laboratory of Molecular Neurobiology and Biophysics, Howard Hughes Medical Institute, The Rockefeller University, New York, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-sensitive inward rectifier potassium channel 11A, C [auth B], B [auth C], D406Homo sapiensMutation(s): 0 
Gene Names: KCNJ11
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q14654 (Homo sapiens)
Explore Q14654 
Go to UniProtKB:  Q14654
PHAROS:  Q14654
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-binding cassette sub-family C member 8E, H [auth F], G, F [auth H]1581Homo sapiensMutation(s): 0 
Gene Names: ABCC8HRINSSURSUR1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q09428 (Homo sapiens)
Explore Q09428 
Go to UniProtKB:  Q09428
PHAROS:  Q09428
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP

Download Ideal Coordinates CCD File 
AA [auth G], EA [auth F], I [auth A], M [auth C], N [auth B], O [auth D], S [auth E], W [auth H]ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
ADP (Subject of Investigation/LOI)
Query on ADP

Download Ideal Coordinates CCD File 
BA [auth F], P [auth E], T [auth H], X [auth G]ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
K
Query on K

Download Ideal Coordinates CCD File 
J [auth A], K [auth A], L [auth A]POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
CA [auth F], DA [auth F], Q [auth E], R [auth E], U [auth H], V [auth H], Y [auth G], Z [auth G]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-31
    Type: Initial release