Related Experiment Videos
Solution structure of the recombinant human oncoprotein p13MTCP1
Y S Yang1, L Guignard, A Padilla
1Centre de Biochimie Structurale, CNRS-UMR 9955, INSERM-U414, Université de Montpellier I, Faculté de Pharmacie, Montpellier, France.
Journal of Biomolecular NMR
|August 6, 1998
Summary
The human oncoprotein p13MTCP1, linked to T-cell leukemia, has an unusual beta-barrel structure. This structural insight into p13MTCP1 may reveal its oncogenic function.
Area of Science:
- Structural biology
- Oncogenic protein research
- Molecular mechanisms of leukemia
Background:
- The MTCP1 gene encodes the human oncoprotein p13MTCP1, implicated in T-cell prolymphocytic leukemia.
- p13MTCP1 shares sequence homology exclusively with p14TCL1, suggesting a novel family of oncogenic proteins.
Purpose of the Study:
- To determine the three-dimensional solution structure of recombinant p13MTCP1.
- To elucidate the structural basis of p13MTCP1's oncogenic potential.
Main Methods:
- Homonuclear proton two-dimensional NMR spectroscopy at 600 MHz.
- Collection of 1253 distance restraints and 64 dihedral restraints.
- Structure calculation using DYANA software.
Main Results:
- The solution structure of p13MTCP1 reveals an orthogonal beta-barrel formed by eight antiparallel beta-strands.
- The core structure (residues 11-103) exhibits backbone and heavy atom RMSD values of 1.07 +/- 0.19 Å and 1.71 +/- 0.17 Å, respectively.
- Two beta-pleated loops extending from the barrel may mediate interactions with molecular partners.
Conclusions:
- The unique beta-barrel structure of p13MTCP1 provides a foundation for understanding its role in oncogenesis.
- Identifying potential interaction surfaces could lead to targeted therapeutic strategies for T-cell leukemia.