6DMW

Calmodulin-bound full-length rbTRPV5


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural insights on TRPV5 gating by endogenous modulators.

Hughes, T.E.T.Pumroy, R.A.Yazici, A.T.Kasimova, M.A.Fluck, E.C.Huynh, K.W.Samanta, A.Molugu, S.K.Zhou, Z.H.Carnevale, V.Rohacs, T.Moiseenkova-Bell, V.Y.

(2018) Nat Commun 9: 4198-4198

  • DOI: 10.1038/s41467-018-06753-6
  • Primary Citation of Related Structures:  
    6DMW, 6DMR, 6DMU

  • PubMed Abstract: 
  • TRPV5 is a transient receptor potential channel involved in calcium reabsorption. Here we investigate the interaction of two endogenous modulators with TRPV5. Both phosphatidylinositol 4,5-bisphosphate (PI(4,5)P 2 ) and calmodulin (CaM) ha ...

    TRPV5 is a transient receptor potential channel involved in calcium reabsorption. Here we investigate the interaction of two endogenous modulators with TRPV5. Both phosphatidylinositol 4,5-bisphosphate (PI(4,5)P 2 ) and calmodulin (CaM) have been shown to directly bind to TRPV5 and activate or inactivate the channel, respectively. Using cryo-electron microscopy (cryo-EM), we determined TRPV5 structures in the presence of dioctanoyl PI(4,5)P 2 and CaM. The PI(4,5)P 2 structure reveals a binding site between the N-linker, S4-S5 linker and S6 helix of TRPV5. These interactions with PI(4,5)P 2 induce conformational rearrangements in the lower gate, opening the channel. The CaM structure reveals two TRPV5 C-terminal peptides anchoring a single CaM molecule and that calcium inhibition is mediated through a cation-π interaction between Lys116 on the C-lobe of calcium-activated CaM and Trp583 at the intracellular gate of TRPV5. Overall, this investigation provides insight into the endogenous modulation of TRPV5, which has the potential to guide drug discovery.


    Organizational Affiliation

    Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. vmb@pennmedicine.upenn.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transient receptor potential cation channel subfamily V member 5ABCD730Oryctolagus cuniculusMutation(s): 0 
Gene Names: Trpv5Ecac1
Find proteins for Q9XSM3 (Oryctolagus cuniculus)
Explore Q9XSM3 
Go to UniProtKB:  Q9XSM3
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin-1E149Rattus norvegicusMutation(s): 0 
Gene Names: Calm1CalmCamCam1CaMI
Find proteins for P0DP29 (Rattus norvegicus)
Explore P0DP29 
Go to UniProtKB:  P0DP29
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM103899
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesU24GM116792

Revision History 

  • Version 1.0: 2018-10-24
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence