7BXU

CLC-7/Ostm1 membrane protein complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



Literature

Molecular insights into the human CLC-7/Ostm1 transporter.

Zhang, S.Liu, Y.Zhang, B.Zhou, J.Li, T.Liu, Z.Li, Y.Yang, M.

(2020) Sci Adv 6: eabb4747-eabb4747

  • DOI: 10.1126/sciadv.abb4747
  • Primary Citation of Related Structures:  
    7BXU

  • PubMed Abstract: 
  • CLC family proteins translocate chloride ions across cell membranes to maintain the membrane potential, regulate the transepithelial Cl - transport, and control the intravesicular pH among different organelles. CLC-7/Ostm1 is an electroge ...

    CLC family proteins translocate chloride ions across cell membranes to maintain the membrane potential, regulate the transepithelial Cl - transport, and control the intravesicular pH among different organelles. CLC-7/Ostm1 is an electrogenic Cl - /H + antiporter that mainly resides in lysosomes and osteoclast ruffled membranes. Mutations in human CLC-7/Ostm1 lead to lysosomal storage disorders and severe osteopetrosis. Here, we present the cryo-electron microscopy (cryo-EM) structure of the human CLC-7/Ostm1 complex and reveal that the highly glycosylated Ostm1 functions like a lid positioned above CLC-7 and interacts extensively with CLC-7 within the membrane. Our complex structure reveals a functionally crucial domain interface between the amino terminus, TMD, and CBS domains of CLC-7. Structural analyses and electrophysiology studies suggest that the domain interaction interfaces affect the slow gating kinetics of CLC-7/Ostm1. Thus, our study deepens understanding of CLC-7/Ostm1 transporter and provides insights into the molecular basis of the disease-related mutations.


    Organizational Affiliation

    School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Osteopetrosis-associated transmembrane protein 1C, D334Homo sapiensMutation(s): 0 
Gene Names: OSTM1GLHSPC019UNQ6098/PRO21201
Find proteins for Q86WC4 (Homo sapiens)
Explore Q86WC4 
Go to UniProtKB:  Q86WC4
NIH Common Fund Data Resources
PHAROS  Q86WC4
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
H(+)/Cl(-) exchange transporter 7A, B805Homo sapiensMutation(s): 0 
Gene Names: CLCN7
Find proteins for P51798 (Homo sapiens)
Explore P51798 
Go to UniProtKB:  P51798
NIH Common Fund Data Resources
PHAROS  P51798
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
C, D
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China21532004, 31570733

Revision History 

  • Version 1.0: 2020-09-16
    Type: Initial release