8FTT | pdb_00008ftt

Crystal structure of a glycosylase specific nanobody


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 
    0.229 (Depositor), 0.236 (DCC) 
  • R-Value Work: 
    0.199 (Depositor), 0.209 (DCC) 
  • R-Value Observed: 
    0.252 (Depositor) 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history

Literature

Deciphering the crystal structure of a novel nanobody against the NEIL1 DNA glycosylase.

Thompson, M.K.Sharma, N.Thorn, A.Prakash, A.

(2024) Acta Crystallogr D Struct Biol 80: 137-146

  • DOI: https://doi.org/10.1107/S205979832400038X
  • Primary Citation Related Structures: 
    8FTT

  • PubMed Abstract: 

    Nanobodies (VHHs) are single-domain antibodies with three antigenic CDR regions and are used in diverse scientific applications. Here, an ∼14 kDa nanobody (A5) specific for the endonuclease VIII (Nei)-like 1 or NEIL1 DNA glycosylase involved in the first step of the base-excision repair pathway was crystallized and its structure was determined to 2.1 Å resolution. The crystals posed challenges due to potential twinning and anisotropic diffraction. Despite inconclusive twinning indicators, reprocessing in an orthorhombic setting and molecular replacement in space group P2 1 2 1 2 enabled the successful modeling of 96% of residues in the asymmetric unit, with final R work and R free values of 0.199 and 0.229, respectively.


  • Organizational Affiliation
    • Mitchell Cancer Institute, University of South Alabama Health, 1660 Springhill Avenue, Mobile, AL 36604, USA.

Macromolecule Content 

  • Total Structure Weight: 59.26 kDa 
  • Atom Count: 3,995 
  • Modeled Residue Count: 501 
  • Deposited Residue Count: 520 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Anti-NEIL1 Nanobody
A, B, C, D
130synthetic constructMutation(s): 0 

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free:  0.229 (Depositor), 0.236 (DCC) 
  • R-Value Work:  0.199 (Depositor), 0.209 (DCC) 
  • R-Value Observed: 0.252 (Depositor) 
Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.806α = 90
b = 76.022β = 90
c = 75.767γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
Cootmodel building
SAINTdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesONES R01-ES030084

Revision History  (Full details and data files)

  • Version 1.0: 2023-10-11
    Type: Initial release
  • Version 1.1: 2024-11-13
    Changes: Structure summary
  • Version 1.2: 2025-03-19
    Changes: Database references