5LPU

Crystal structure of Annexin A2 complexed with S100A4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Regulation of the Equilibrium between Closed and Open Conformations of Annexin A2 by N-Terminal Phosphorylation and S100A4-Binding.

Ecsedi, P.Kiss, B.Gogl, G.Radnai, L.Buday, L.Koprivanacz, K.Liliom, K.Leveles, I.Vertessy, B.Jeszenoi, N.Hetenyi, C.Schlosser, G.Katona, G.Nyitray, L.

(2017) Structure 25: 1195-1207.e5

  • DOI: 10.1016/j.str.2017.06.001
  • Primary Citation of Related Structures:  
    5LQ2, 5LPU, 5LPX, 5LQ0

  • PubMed Abstract: 
  • Annexin A2 (ANXA2) has a versatile role in membrane-associated functions including membrane aggregation, endo- and exocytosis, and it is regulated by post-translational modifications and protein-protein interactions through the unstructured N-termina ...

    Annexin A2 (ANXA2) has a versatile role in membrane-associated functions including membrane aggregation, endo- and exocytosis, and it is regulated by post-translational modifications and protein-protein interactions through the unstructured N-terminal domain (NTD). Our sequence analysis revealed a short motif responsible for clamping the NTD to the C-terminal core domain (CTD). Structural studies indicated that the flexibility of the NTD and CTD are interrelated and oppositely regulated by Tyr24 phosphorylation and Ser26Glu phosphomimicking mutation. The crystal structure of the ANXA2-S100A4 complex showed that asymmetric binding of S100A4 induces dislocation of the NTD from the CTD and, similar to the Ser26Glu mutation, unmasks the concave side of ANXA2. In contrast, pTyr24 anchors the NTD to the CTD and hampers the membrane-bridging function. This inhibition can be restored by S100A4 and S100A10 binding. Based on our results we provide a structural model for regulation of ANXA2-mediated membrane aggregation by NTD phosphorylation and S100 binding.


    Organizational Affiliation

    Department of Biochemistry, ELTE Eötvös Loránd University, 1117 Budapest, Hungary. Electronic address: nyitray@elte.hu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Annexin A2AB339Homo sapiensMutation(s): 2 
Gene Names: ANXA2ANX2ANX2L4CAL1HLPC2D
Find proteins for P07355 (Homo sapiens)
Explore P07355 
Go to UniProtKB:  P07355
NIH Common Fund Data Resources
PHAROS  P07355
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein S100-A4CD104Homo sapiensMutation(s): 0 
Gene Names: S100A4CAPLMTS1
Find proteins for P26447 (Homo sapiens)
Explore P26447 
Go to UniProtKB:  P26447
NIH Common Fund Data Resources
PHAROS  P26447
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A, B, C, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.74α = 90
b = 61.24β = 88.69
c = 148.16γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-07-05
    Type: Initial release
  • Version 1.1: 2017-07-12
    Changes: Database references
  • Version 1.2: 2017-08-09
    Changes: Database references