1UTR

UTEROGLOBIN-PCB COMPLEX (REDUCED FORM)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of a mammalian PCB-binding protein in complex with a PCB.

Hard, T.Barnes, H.J.Larsson, C.Gustafsson, J.A.Lund, J.

(1995) Nat.Struct.Mol.Biol. 2: 983-989


  • PubMed Abstract: 
  • Metabolites of polychlorinated biphenyls (PCBs) bind with high affinity to uteroglobin, a small homodimeric protein that also binds progesterone. We present the solution structure of the reduced form of rat uteroglobin in complex with a PCB methylsul ...

    Metabolites of polychlorinated biphenyls (PCBs) bind with high affinity to uteroglobin, a small homodimeric protein that also binds progesterone. We present the solution structure of the reduced form of rat uteroglobin in complex with a PCB methylsulphone, (MeSO2)2-TCB. The structure reveals the molecular basis for the accumulation of (MeSO2)2-TCB by uteroglobin. The structure also shows how ligand binding and release might be controlled by reduction/oxidation of two intermolecular disulphide bonds. Breakage of these bonds induces a local unfolding of the N- and C-termini and a separation of helices creating a channel into the binding site. These effects make the ligand binding cavity readily accessible to entry of the ligand.


    Related Citations: 
    • Progesterone Binding to Uteroglobin: Two Alternative Conformations of the Ligand
      Dunkel, R.,Vriend, G.,Beato, M.,Suske, G.
      (1995) Protein Eng. 8: 71
    • Heterologous Expression of Human Uteroglobin (Slash) Polychlorinated Biphenyl-Binding Protein
      Andersson, O.,Nordlund-Moeller, L.,Barnes, H.J.,Lund, J.
      (1994) J.Biol.Chem. 269: 19081
    • Cloning, Structure, and Expression of a Rat Binding Protein for Polychlorinated Biphenyls
      Nordlund-Moeller, L.,Andersson, O.,Ahlgren, R.,Schilling, J.,Gillner, M.,Gustafsson, J.-A.,Lund, J.
      (1992) J.Mol.Biol. 224: 442


    Organizational Affiliation

    Center for Structural Biochemistry, Karolinska Institutet, NOVUM, Huddinge, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UTEROGLOBIN
A, B
96Rattus norvegicusMutation(s): 0 
Gene Names: Scgb1a1 (Cc10, Ugb, Utg)
Find proteins for P17559 (Rattus norvegicus)
Go to UniProtKB:  P17559
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PCB
Query on PCB

Download SDF File 
Download CCD File 
A
4,4'-BIS([H]METHYLSULFONYL)-2,2',5,5'-TETRACHLOROBIPHENYL
C14 H10 Cl4 O4 S2
RDBKPLOYRMCFIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PCBKd: 10 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance