7RD5

Crystal structure of Tspan15 large extracellular loop (Tspan15 LEL) in complex with 1C12 Fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.271 
  • R-Value Observed: 0.274 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of the Tspan15 LEL domain reveals a conserved ADAM10 binding site.

Lipper, C.H.Gabriel, K.H.Seegar, T.C.M.Durr, K.L.Tomlinson, M.G.Blacklow, S.C.

(2022) Structure 30: 206-214.e4

  • DOI: https://doi.org/10.1016/j.str.2021.10.007
  • Primary Citation of Related Structures:  
    7RD5, 7RDB

  • PubMed Abstract: 

    Tetraspanins are four-pass transmembrane proteins that function by regulating trafficking of partner proteins and organizing signaling complexes in the membrane. Tspan15, one of a six-member TspanC8 subfamily, forms a complex that regulates the trafficking, maturation, and substrate selectivity of the transmembrane protease ADAM10, an essential enzyme in mammalian physiology that cleaves a wide variety of membrane-anchored substrates, including Notch receptors, amyloid precursor protein, cadherins, and growth factors. We present here crystal structures of the Tspan15 large extracellular loop (LEL) required for functional association with ADAM10 both in isolation and in complex with the Fab fragment of an anti-Tspan15 antibody. Comparison of the Tspan15 LEL with other tetraspanin LEL structures shows that a core helical framework buttresses a variable region that structurally diverges among LELs. Using co-immunoprecipitation and a cellular N-cadherin cleavage assay, we identify a site on Tspan15 required for both ADAM10 binding and promoting substrate cleavage.


  • Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
1C12 Fab Light ChainA,
D [auth C]
220Mus musculusMutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
1C12 Fab Heavy ChainB,
E [auth D]
226Mus musculusMutation(s): 0 
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Tetraspanin-15C [auth F],
F [auth E]
122Homo sapiensMutation(s): 2 
Gene Names: TSPAN15NET7TM4SF15UNQ677/PRO1311
UniProt & NIH Common Fund Data Resources
Find proteins for O95858 (Homo sapiens)
Explore O95858 
Go to UniProtKB:  O95858
PHAROS:  O95858
GTEx:  ENSG00000099282 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO95858
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.271 
  • R-Value Observed: 0.274 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 171.3α = 90
b = 124.64β = 98.171
c = 116.12γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR35CA220340
Other privateUnited StatesEdward B. Goodnow
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/P00783X/1
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP41GM103403

Revision History  (Full details and data files)

  • Version 1.0: 2021-11-03
    Type: Initial release
  • Version 1.1: 2021-11-17
    Changes: Database references
  • Version 1.2: 2022-02-16
    Changes: Database references
  • Version 1.3: 2023-10-18
    Changes: Data collection, Refinement description