5OCK

Crystal structure of ACPA E4 in complex with CEP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structural Basis of Cross-Reactivity of Anti-Citrullinated Protein Antibodies.

Ge, C.Xu, B.Liang, B.Lonnblom, E.Lundstrom, S.L.Zubarev, R.A.Ayoglu, B.Nilsson, P.Skogh, T.Kastbom, A.Malmstrom, V.Klareskog, L.Toes, R.E.M.Rispens, T.Dobritzsch, D.Holmdahl, R.

(2019) Arthritis Rheumatol 71: 210-221

  • DOI: 10.1002/art.40698
  • Primary Citation of Related Structures:  
    5ODB, 5OCY, 5OCX, 5OD8, 5OCK, 5OD0

  • PubMed Abstract: 
  • Anti-citrullinated protein antibodies (ACPAs) develop many years before the clinical onset of rheumatoid arthritis (RA). This study was undertaken to address the molecular basis of the specificity and cross-reactivity of ACPAs from patients with RA.


    Organizational Affiliation

    Karolinska Institutet, Stockholm, Sweden, and Southern Medical University, Guangzhou, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Human ACPA E4 Fab fragment - Light chainA [auth L]217Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Human ACPA E4 Fab fragment - Heavy chainB [auth H]221Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
CEP1 peptide (from enolase)C [auth A]21Homo sapiensMutation(s): 0 
Gene Names: ENO1ENO1L1MBPB1MPB1
EC: 4.2.1.11
UniProt & NIH Common Fund Data Resources
Find proteins for P06733 (Homo sapiens)
Explore P06733 
Go to UniProtKB:  P06733
PHAROS:  P06733
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A [auth L]L-PEPTIDE LINKINGC5 H7 N O3GLN
CIR
Query on CIR
C [auth A]L-PEPTIDE LINKINGC6 H13 N3 O3ARG
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.296α = 90
b = 101.048β = 101.03
c = 52.109γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Knut and Alice Wallenberg FoundationSwedenKAW2010.0148
Swedish Research CouncilSweden2015-02662

Revision History  (Full details and data files)

  • Version 1.0: 2018-07-04
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references
  • Version 2.0: 2020-03-11
    Changes: Atomic model, Data collection, Database references, Polymer sequence