1UTG

REFINEMENT OF THE C2221 CRYSTAL FORM OF OXIDIZED UTEROGLOBIN AT 1.34 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å

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This is version 1.3 of the entry. See complete history

Literature

Refinement of the C222(1) crystal form of oxidized uteroglobin at 1.34 A resolution.

Morize, I.Surcouf, E.Vaney, M.C.Epelboin, Y.Buehner, M.Fridlansky, F.Milgrom, E.Mornon, J.P.

(1987) J.Mol.Biol. 194: 725-739


  • PubMed Abstract: 
  • The structure of uteroglobin, a progesterone binding protein from rabbit uterine fluid, was determined and refined at 1.34 A resolution to a conventional R-factor of 0.229. The accuracy of the co-ordinates is estimated to be 0.15 A. The isotropic tem ...

    The structure of uteroglobin, a progesterone binding protein from rabbit uterine fluid, was determined and refined at 1.34 A resolution to a conventional R-factor of 0.229. The accuracy of the co-ordinates is estimated to be 0.15 A. The isotropic temperature factor of individual atoms was refined and its average value is 11.9 A2 for the 548 non-hydrogen atoms of the protein monomer. A total of 83 water molecules was located in difference electron density maps and refined, first using a constant occupancy factor of 1 and then variable occupancy, the final (Q) being 0.63. The mean temperature factor of the water oxygen atoms is 26.4 A2. Uteroglobin is a dimer and its secondary structure consists of four alpha-helices per monomer that align in an anti-parallel fashion. There is one beta-turn between helix 2 and helix 3 (Lys26 to Glu29); 76% of the residues are part of the alpha-helices. In the core of the dimeric protein molecule, between the two monomers that are held together by two disulfide bridges, we have observed a closed cavity. Its length is 15.6 A and its width is 9 A; 14 water molecules could be positioned inside. In the "bottom" part of the protein, near the C terminus, we have observed a smaller cavity, occupied by two water molecules. The calculation of the molecular surface revealed four surface pockets whose possible functional implications are discussed below.


    Related Citations: 
    • Purification, Characterization and Proteinase-Inhibitory Activity of a Clara-Cell Secretory Protein from the Pulmonary Extracellular Lining of Rabbits
      Gupta, R.P.,Patton, S.E.,Jetten, A.M.,Hook, G.E.R.
      (1987) Biochem.J. 248: 337
    • X-Ray Analysis of a Progesterone-Binding Protein (Uteroglobin). Preliminary Results
      Mornon, J.P.,Surcouf, E.,Bally, R.,Fridlansky, F.,Milgrom, E.
      (1978) J.Mol.Biol. 122: 237
    • Uteroglobin. Structure, Molecular Biology, and New Perspectives on its Function as a Phospholipasea2 Inhibitor
      Miele, L.,Cordella-Miele, E.,Mukherjee, A.B.
      (1987) Endocr.Rev. 8: 474
    • Use of Molecular Replacement in the Structure Determination of the P21212 and the P21 (Pseudo P21212) Crystal Forms of Oxidized Uteroglobin
      Buehner, M.,Lifchitz, A.,Bally, R.,Mornon, J.P.
      (1982) J.Mol.Biol. 159: 353
    • Evidence for the Identity of Anti-Proteinase Pulmonary Protein Ccsp and Uteroglobin
      Lopez Deharo, M.S.,Alvarez, L.,Nieto, A.
      (1988) FEBS Lett. 232: 351
    • Characterization of Two New Crystal Forms of Uteroglobin
      Mornon, J.P.,Bally, R.,Fridlansky, F.,Milgrom, E.
      (1979) J.Mol.Biol. 127: 237
    • X-Ray Crystallographic Analysis of a Progesterone-Binding Protein. The C 2 2 21 Crystal Form of Oxidized Uteroglobin at 2.2 Angstroms Resolution
      Mornon, J.P.,Fridlansky, F.,Bally, R.,Milgrom, E.
      (1980) J.Mol.Biol. 137: 415


    Organizational Affiliation

    Laboratoire de Minéralogie-Cristallographie associé au CNRS, Universités Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UTEROGLOBIN
A
70Oryctolagus cuniculusMutation(s): 0 
Gene Names: SCGB1A1 (UGB, UGL)
Find proteins for P02779 (Oryctolagus cuniculus)
Go to Gene View: SCGB1A1
Go to UniProtKB:  P02779
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.34 Å
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 50.860α = 90.00
b = 52.220β = 90.00
c = 47.280γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1989-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other