4ACQ

Alpha-2 Macroglobulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.3 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

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

  • DOI: 10.1002/anie.201108015

  • 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 c ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ALPHA-2-MACROGLOBULIN
A, B, C, D
1451Homo sapiensGene Names: A2M (CPAMD5)
Find proteins for P01023 (Homo sapiens)
Go to Gene View: A2M
Go to UniProtKB:  P01023
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
A, B, C, D
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, C, D
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MEQ
Query on MEQ
A, B, C, D
L-PEPTIDE LINKINGC6 H12 N2 O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.3 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.238 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 130.690α = 90.00
b = 260.300β = 90.00
c = 281.800γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
BUSTERrefinement
AMoREphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-22
    Type: Initial release
  • Version 1.1: 2012-04-11
    Type: Other
  • Version 1.2: 2012-05-16
    Type: Other
  • Version 1.3: 2012-07-18
    Type: Database references
  • Version 1.4: 2014-12-17
    Type: Derived calculations