4DRW

Crystal Structure of the Ternary Complex between S100A10, an Annexin A2 N-terminal Peptide and an AHNAK Peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.296 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of an asymmetric ternary protein complex provides insight for membrane interaction.

Dempsey, B.R.Rezvanpour, A.Lee, T.W.Barber, K.R.Junop, M.S.Shaw, G.S.

(2012) Structure 20: 1737-1745

  • DOI: 10.1016/j.str.2012.08.004

  • PubMed Abstract: 
  • Plasma membrane repair involves the coordinated effort of proteins and the inner phospholipid surface to mend the rupture and return the cell back to homeostasis. Here, we present the three-dimensional structure of a multiprotein complex that include ...

    Plasma membrane repair involves the coordinated effort of proteins and the inner phospholipid surface to mend the rupture and return the cell back to homeostasis. Here, we present the three-dimensional structure of a multiprotein complex that includes S100A10, annexin A2, and AHNAK, which along with dysferlin, functions in muscle and cardiac tissue repair. The 3.5 Å resolution X-ray structure shows that a single region from the AHNAK C terminus is recruited by an S100A10-annexin A2 heterotetramer, forming an asymmetric ternary complex. The AHNAK peptide adopts a coil conformation that arches across the heterotetramer contacting both annexin A2 and S100A10 protomers with tight affinity (∼30 nM) and establishing a structural rationale whereby both S100A10 and annexin proteins are needed in AHNAK recruitment. The structure evokes a model whereby AHNAK is targeted to the membrane surface through sandwiching of the binding region between the S100A10/annexin A2 complex and the phospholipid membrane.


    Organizational Affiliation

    Department of Biochemistry, The University of Western Ontario, London, Ontario N6A 5C1, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein S100-A10/Annexin A2 chimeric protein
A, B, C, D
121Homo sapiensMutation(s): 1 
Gene Names: S100A10 (ANX2LG, CAL1L, CLP11), ANXA2 (ANX2, ANX2L4, CAL1H, LPC2D)
Find proteins for P60903 (Homo sapiens)
Go to Gene View: S100A10
Go to UniProtKB:  P60903
Find proteins for P07355 (Homo sapiens)
Go to Gene View: ANXA2
Go to UniProtKB:  P07355
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Neuroblast differentiation-associated protein AHNAK
E, F
20Homo sapiensMutation(s): 0 
Gene Names: AHNAK (PM227)
Find proteins for Q09666 (Homo sapiens)
Go to Gene View: AHNAK
Go to UniProtKB:  Q09666
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.296 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 47.755α = 71.62
b = 47.791β = 71.63
c = 62.817γ = 68.62
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
CBASSdata collection
CNSrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-24
    Type: Initial release
  • Version 1.1: 2012-10-31
    Type: Database references
  • Version 1.2: 2017-07-26
    Type: Refinement description, Source and taxonomy