8B8I | pdb_00008b8i

Nanobody (NbLumSyt1) bound to human Syt1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 
    0.298 (Depositor), 0.303 (DCC) 
  • R-Value Work: 
    0.263 (Depositor), 0.283 (DCC) 

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Validation slider image for 8B8I

This is version 1.3 of the entry. See complete history

Literature

A versatile nanobody platform for live and super-resolution imaging of synaptic vesicle dynamics and plasticity in rodent and human neurons.

Goel, R.Jevdokimenko, K.Rehm, R.Hentze, J.Agui-Gonzalez, P.Ninov, M.Maier, E.Wu, Y.Lange, F.Witkowska, A.Bolz, S.Pennacchietti, F.Damenti, M.Kaempf, N.Khayenko, V.Calatayud, C.Malviya, V.N.Chanaday, N.L.Hutchinson, E.S.Liu, H.Weyand, K.Schwarze, V.Ivanova, D.Wallis, T.P.Small, C.Maric, H.M.Joensuu, M.Cousin, M.A.Meunier, F.A.Verstreken, P.Testa, I.Kavalali, E.T.Haucke, V.Jakobs, S.Urlaub, H.Brose, N.Cooper, B.H.Stenmark, P.Opazo, F.Jahn, R.Rizzoli, S.O.Fornasiero, E.F.

(2026) J Nanobiotechnology 24

  • DOI: https://doi.org/10.1186/s12951-026-04489-w
  • Primary Citation Related Structures: 
    8B8I

  • PubMed Abstract: 

    Synaptic neurotransmission is a critical hallmark of brain activity and one of the first processes affected in neural diseases. Monitoring this process, particularly synaptic vesicle recycling, in living cells has been instrumental in revealing the mechanisms responsible for neurotransmitter release. However, currently available reporters suffer from limitations, such as large probe sizes or limited compatibility for human neurons, hampering the quantitative analysis of synaptic pathophysiology. Here, we describe the NbLumSyt1 toolkit, a panel of nanobody-based affinity probes that target the luminal domain of the synaptic vesicle protein Synaptotagmin 1 (Syt1). These new tools enable quantitative, noninvasive imaging and functional interrogation of Syt1 exo-endocytosis and trafficking in human neurons, with unprecedented precision, versatility and cost efficiency, in technologies ranging from fixed- and live-cell super-resolution imaging to electron microscopy and mass spectrometry. Overall, NbLumSyt1 nanobinders provide a valuable platform for studying synaptic physiology and pathophysiology, benefiting fundamental neuroscience and translational efforts to study and develop treatments for brain-related disorders.


  • Organizational Affiliation
    • Laboratory of Neurobiology, Max Planck Institute for Multidisciplinary Sciences, 37077, Göttingen, Germany.

Macromolecule Content 

  • Total Structure Weight: 152.48 kDa 
  • Atom Count: 7,778 
  • Modeled Residue Count: 1,052 
  • Deposited Residue Count: 1,424 
  • Unique protein chains: 2

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Nanobody (NbLumSyt1)
A, B, C, D, E
A, B, C, D, E, F, G, H
118Vicugna pacosMutation(s): 0 
Find similar proteins by:|  3D Structure
Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Synaptotagmin-1
I, J, K, L, M
I, J, K, L, M, N, O, P
60Homo sapiensMutation(s): 0 
Gene Names: SYT1SVP65SYT
UniProt & NIH Common Fund Data Resources
Find proteins for P21579 (Homo sapiens)
Explore P21579 
Go to UniProtKB:  P21579
PHAROS:  P21579
GTEx:  ENSG00000067715 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP21579
Sequence Annotations
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Reference Sequence

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free:  0.298 (Depositor), 0.303 (DCC) 
  • R-Value Work:  0.263 (Depositor), 0.283 (DCC) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.955α = 90
b = 100.226β = 100.832
c = 103.939γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DIALSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Swedish Research CouncilSweden--

Revision History  (Full details and data files)

  • Version 1.0: 2024-04-17
    Type: Initial release
  • Version 1.1: 2024-11-20
    Changes: Structure summary
  • Version 1.2: 2026-03-04
    Changes: Refinement description
  • Version 1.3: 2026-06-10
    Changes: Database references