6HCZ

Sjoegren syndrome/scleroderma autoantigen 1 (SSSCA1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Sjogren syndrome/scleroderma autoantigen 1 is a direct Tankyrase binding partner in cancer cells.

Perdreau-Dahl, H.Progida, C.Barfeld, S.J.Guldsten, H.Thiede, B.Arntzen, M.Bakke, O.Mills, I.G.Krauss, S.Morth, J.P.

(2020) Commun Biol 3: 123-123

  • DOI: https://doi.org/10.1038/s42003-020-0851-2
  • Primary Citation of Related Structures:  
    6HCZ

  • PubMed Abstract: 
  • Sjögren syndrome/scleroderma autoantigen 1 (SSSCA1) was first described as an auto-antigen over-expressed in Sjögren's syndrome and in scleroderma patients. SSSCA1 has been linked to mitosis and centromere association and as a potential marker candidate in diverse solid cancers ...

    Sjögren syndrome/scleroderma autoantigen 1 (SSSCA1) was first described as an auto-antigen over-expressed in Sjögren's syndrome and in scleroderma patients. SSSCA1 has been linked to mitosis and centromere association and as a potential marker candidate in diverse solid cancers. Here we characterize SSSCA1 for the first time, to our knowledge, at the molecular, structural and subcellular level. We have determined the crystal structure of a zinc finger fold, a zinc ribbon domain type 2 (ZNRD2), at 2.3 Å resolution. We show that the C-terminal domain serves a dual function as it both behaves as the interaction site to Tankyrase 1 (TNKS1) and as a nuclear export signal. We identify TNKS1 as a direct binding partner of SSSCA1, map the binding site to TNKS1 ankyrin repeat cluster 2 (ARC2) and thus define a new binding sequence. We experimentally verify and map a new nuclear export signal sequence in SSSCA1.


    Organizational Affiliation

    Enzyme and Protein Chemistry, Section for Protein Chemistry and Enzyme Technology, Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800, Kgs. Lyngby, Denmark. premo@dtu.dk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Sjoegren syndrome/scleroderma autoantigen 1A, B199Homo sapiensMutation(s): 0 
Gene Names: SSSCA1ZNRD2
UniProt & NIH Common Fund Data Resources
Find proteins for O60232 (Homo sapiens)
Explore O60232 
Go to UniProtKB:  O60232
PHAROS:  O60232
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO60232
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth A],
E [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download Ideal Coordinates CCD File 
C [auth A]FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.49α = 90
b = 49.49β = 90
c = 164.18γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-03-18
    Type: Initial release
  • Version 1.1: 2020-03-25
    Changes: Database references