1ZAG

HUMAN ZINC-ALPHA-2-GLYCOPROTEIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Crystal structure of human ZAG, a fat-depleting factor related to MHC molecules.

Sanchez, L.M., Chirino, A.J., Bjorkman, P.

(1999) Science 283: 1914-1919

  • Also Cited By: 1T7V

  • PubMed Abstract: 

    • Zn-alpha2-glycoprotein (ZAG) is a soluble protein that is present in serum and other body fluids. ZAG stimulates lipid degradation in adipocytes and causes the extensive fat losses associated with some advanced cancers. The 2.8 angstrom crystal struc ...

    Zn-alpha2-glycoprotein (ZAG) is a soluble protein that is present in serum and other body fluids. ZAG stimulates lipid degradation in adipocytes and causes the extensive fat losses associated with some advanced cancers. The 2.8 angstrom crystal structure of ZAG resembles a class I major histocompatibility complex (MHC) heavy chain, but ZAG does not bind the class I light chain beta2-microglobulin. The ZAG structure includes a large groove analogous to class I MHC peptide binding grooves. Instead of a peptide, the ZAG groove contains a nonpeptidic compound that may be implicated in lipid catabolism under normal or pathological conditions.

    Related Citations: 
    • Complete Amino Acid Sequence of Human Plasma Zn-Alpha2-Glycoprotein and its Homology to Histocompatibility Antigens
      Araki, T.,Gejyo, F.,Takagaki, K.,Haupt, H.,Schwick, H.G.,Burgi, W.,Marti, T.,Schaller, J.,Rickli, E.,Brossmer, R.,Atlinson, P.H.,Putnam, F.W.,Schmid, K.
      (1988) Proc.Natl.Acad.Sci.USA 85: 679
    • Biochemical Characterization and Crystallization of Human Zn-Alpha2- Glycoprotein, a Soluble Class I Major Histocompatibility Complex Homolog
      Sanchez, L.M.,Lopez-Otin, C.,Bjorkman, P.J.
      (1997) Proc.Natl.Acad.Sci.USA 94: 4626

    Organizational Affiliation: 

    Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (ZINC-ALPHA-2-GLYCOPROTEIN)
A, B, C, D
274Homo sapiensMutation(s): 0 
Gene Names: AZGP1 (ZAG, ZNGP1)
Find proteins for P25311 (Homo sapiens)
Go to Gene View: AZGP1
Go to UniProtKB:  P25311
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN
Download SDF File 
Download CCD File 
A, B
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
GAL
Query on GAL
Download SDF File 
Download CCD File 
B
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
BMA
Query on BMA
Download SDF File 
Download CCD File 
A, B, D
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NDG
Query on NDG
Download SDF File 
Download CCD File 
C
2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-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
SIA
Query on SIA
Download SDF File 
Download CCD File 
B
O-SIALIC ACID
C11 H19 N O9
SQVRNKJHWKZAKO-YRMXFSIDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.229 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 105.600α = 90.00
b = 131.700β = 90.00
c = 118.500γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-31
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance