4ACQ

Alpha-2 Macroglobulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 

wwPDB Validation   3D Report Full Report



Literature

The crystal structure of human alpha 2-macroglobulin reveals a unique molecular cage.

Marrero, A.Duquerroy, S.Trapani, S.Goulas, T.Guevara, T.Andersen, G.R.Navaza, J.Sottrup-Jensen, L.Gomis-Ruth, F.X.

(2012) Angew Chem Int Ed Engl 51: 3340-3344

  • DOI: 10.1002/anie.201108015
  • Primary Citation of Related Structures:  
    4ACQ

  • PubMed Abstract: 
  • I'm your Venus: the crystal structure of the human methylamine-induced form of α(2)-macroglobulin (α(2)M) shows its large central cavity can accommodate two medium-sized proteinases. Twelve major entrances provide access for small substrates to the cavit ...

    I'm your Venus: the crystal structure of the human methylamine-induced form of α(2)-macroglobulin (α(2)M) shows its large central cavity can accommodate two medium-sized proteinases. Twelve major entrances provide access for small substrates to the cavity and the still-active trapped "prey". The structure unveils the molecular basis of the unique "venus flytrap" mechanism of α(2)M.


    Related Citations: 
    • Low Resolution X-Ray Structure of Human Methylamine-Treated Alpha 2-Macroglobulin.
      Andersen, G.R., Koch, T.J., Dolmer, K., Sottrup-Jensen, L., Nyborg, J.
      (1995) J Biol Chem 270: 25133

    Organizational Affiliation

    Proteolysis Lab, Molecular Biology Institute of Barcelona, CSIC, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-2-MACROGLOBULIN ABCD1451Homo sapiensMutation(s): 0 
Gene Names: A2MCPAMD5FWP007
Find proteins for P01023 (Homo sapiens)
Explore P01023 
Go to UniProtKB:  P01023
NIH Common Fund Data Resources
PHAROS:  P01023
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, F, G, I, J, K, M, N, O, Q, R, S
2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
H, L, P, T
3 N-Glycosylation Oligosaccharides Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.239 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 130.69α = 90
b = 260.3β = 90
c = 281.8γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-22
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Other
  • Version 1.2: 2012-05-16
    Changes: Other
  • Version 1.3: 2012-07-18
    Changes: Database references
  • Version 1.4: 2014-12-17
    Changes: Derived calculations
  • Version 2.0: 2019-01-30
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary