Loading
PDBj
MenuPDBj@FacebookPDBj@TwitterPDBj@YouTubewwPDB FoundationwwPDB
RCSB PDBPDBeBMRBAdv. SearchSearch help

4H37

Crystal structure of a voltage-gated K+ channel pore domain in a closed state in lipid membranes

Summary for 4H37
Entry DOI10.2210/pdb4h37/pdb
Related4H33
DescriptorLmo2059 protein, POTASSIUM ION (2 entities in total)
Functional Keywordsmodule, pore module, ion channel, membrane, membrane protein
Biological sourceListeria monocytogenes
Total number of polymer chains2
Total formula weight31279.26
Authors
Santos, J.S.,Asmar-Rovira, G.A.,Han, G.W.,Liu, W.,Syeda, R.,Cherezov, V.,Baker, K.A.,Stevens, R.C.,Montal, M. (deposition date: 2012-09-13, release date: 2012-11-07, Last modification date: 2023-09-20)
Primary citationSantos, J.S.,Asmar-Rovira, G.A.,Han, G.W.,Liu, W.,Syeda, R.,Cherezov, V.,Baker, K.A.,Stevens, R.C.,Montal, M.
Crystal Structure of a Voltage-gated K+ Channel Pore Module in a Closed State in Lipid Membranes.
J.Biol.Chem., 287:43063-43070, 2012
Cited by
PubMed Abstract: Voltage-gated K(+) channels underlie the electrical excitability of cells. Each subunit of the functional tetramer consists of the tandem fusion of two modules, an N-terminal voltage-sensor and a C-terminal pore. To investigate how sensor coupling to the pore generates voltage-dependent channel opening, we solved the crystal structure and characterized the function of a voltage-gated K(+) channel pore in a lipid membrane. The structure of a functional channel in a membrane environment at 3.1 Å resolution establishes an unprecedented connection between channel structure and function. The structure is unique in delineating an ion-occupied ready to conduct selectivity filter, a confined aqueous cavity, and a closed activation gate, embodying a dynamic entity trapped in an unstable closed state.
PubMed: 23095758
DOI: 10.1074/jbc.M112.415091
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (3.35 Å)
Structure validation

227111

PDB entries from 2024-11-06

PDB statisticsPDBj update infoContact PDBjnumon