3A2A

The structure of the carboxyl-terminal domain of the human voltage-gated proton channel Hv1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.252 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The role and structure of the carboxyl-terminal domain of the human voltage-gated proton channel Hv1.

Li, S.J.Zhao, Q.Zhou, Q.Unno, H.Zhai, Y.Sun, F.

(2010) J.Biol.Chem. 285: 12047-12054

  • DOI: 10.1074/jbc.M109.040360

  • PubMed Abstract: 
  • The voltage-gated proton channel Hv1 has a voltage sensor domain but lacks a pore domain. Although the C-terminal domain of Hv1 is known to be responsible for dimeric architecture of the channel, its role and structure are not known. We report that t ...

    The voltage-gated proton channel Hv1 has a voltage sensor domain but lacks a pore domain. Although the C-terminal domain of Hv1 is known to be responsible for dimeric architecture of the channel, its role and structure are not known. We report that the full-length Hv1 is mainly localized in intracellular compartment membranes rather than the plasma membrane. Truncation of either the N or C terminus alone or both together revealed that the N-terminal deletion did not alter localization, but deletion of the C terminus either alone or together with the N terminus resulted in expression throughout the cell. These results indicate that the C terminus is essential for Hv1 localization but not the N terminus. In the 2.0 A structure of the C-terminal domain, the two monomers form a dimer via a parallel alpha-helical coiled-coil, in which one chloride ion binds with the Neta atom of Arg(264). A pH-dependent structural change of the protein has been observed, but it remains a dimer irrespective of pH value.


    Organizational Affiliation

    Key Laboratory of Bioactive Materials, Ministry of Education, College of Physics Science, Nankai University, Tianjin 300071, China. shujieli@nankai.edu.cn




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Voltage-gated hydrogen channel 1
A, B, C, D
58Homo sapiensMutation(s): 0 
Gene Names: HVCN1 (VSOP)
Find proteins for Q96D96 (Homo sapiens)
Go to Gene View: HVCN1
Go to UniProtKB:  Q96D96
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, C
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.252 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 37.650α = 90.00
b = 37.650β = 90.00
c = 137.040γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
SCALAdata scaling
MOSFLMdata reduction
SOLVEphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance