Thermostabilized human prestin in complex with sulfate

Experimental Data Snapshot

  • Resolution: 3.63 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history


Cryo-EM structures of thermostabilized prestin provide mechanistic insights underlying outer hair cell electromotility.

Futamata, H.Fukuda, M.Umeda, R.Yamashita, K.Tomita, A.Takahashi, S.Shikakura, T.Hayashi, S.Kusakizako, T.Nishizawa, T.Homma, K.Nureki, O.

(2022) Nat Commun 13: 6208-6208

  • DOI: https://doi.org/10.1038/s41467-022-34017-x
  • Primary Citation of Related Structures:  
    7V73, 7V74, 7V75

  • PubMed Abstract: 

    Outer hair cell elecromotility, driven by prestin, is essential for mammalian cochlear amplification. Here, we report the cryo-EM structures of thermostabilized prestin (Pres TS ), complexed with chloride, sulfate, or salicylate at 3.52-3.63 Å resolutions. The central positively-charged cavity allows flexible binding of various anion species, which likely accounts for the known distinct modulations of nonlinear capacitance (NLC) by different anions. Comparisons of these Pres TS structures with recent prestin structures suggest rigid-body movement between the core and gate domains, and provide mechanistic insights into prestin inhibition by salicylate. Mutations at the dimeric interface severely diminished NLC, suggesting that stabilization of the gate domain facilitates core domain movement, thereby contributing to the expression of NLC. These findings advance our understanding of the molecular mechanism underlying mammalian cochlear amplification.

  • Organizational Affiliation

    Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
prestin753Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
LBN (Subject of Investigation/LOI)
Query on LBN

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth A]
I [auth A]
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A]
C42 H82 N O8 P
CLR (Subject of Investigation/LOI)
Query on CLR

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A]
C27 H46 O
SO4 (Subject of Investigation/LOI)
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Experimental Data & Validation

Experimental Data

  • Resolution: 3.63 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)Japan--

Revision History  (Full details and data files)

  • Version 1.0: 2022-08-31
    Type: Initial release
  • Version 1.1: 2023-03-15
    Changes: Database references, Refinement description
  • Version 1.2: 2024-06-12
    Changes: Data collection, Refinement description