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: 3656405
- PubMed Abstract:
- 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
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.
Laboratoire de Minéralogie-Cristallographie associé au CNRS, Universités Paris, France.