1qtu
From Proteopedia
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SOLUTION STRUCTURE OF THE ONCOPROTEIN P13MTCP1
Overview
Two related oncogenes, TCL1 and MTCP1, are overexpressed in certain T-cell, prolymphocytic leukemias as a result of chromosomal rearrangements that, involve the translocation of one T-cell receptor gene to either chromosome, 14q32 or Xq28, respectively. The human oncoprotein p13MTCP1 is coded by, the MTCP1 gene and its primary sequence is highly and only homologous to, that of p14TCL1, the product of TCL1. These two proteins likely represent, the first members of a new family of oncogenic proteins. A previous model, of the three-dimensional solution structure of p13MTCP1 was determined, recently using exclusively homonuclear proton two-dimensional NMR methods, and, almost simultaneously, high-resolution crystal structures of p13MTCP1, and p14TCL1 appeared in the literature. In order to gain more insight into, the details of the solution structure, we uniformly labeled p13MTCP1 with, nitrogen-15. The refined structure benefits from 520 additional NOEs, extracted from either 15N-edited 3D experiments or homonuclear 2D NOESY, recorded at 800 MHz, and from a nearly complete set of phi angular, restraints. Measurements of 15N spin relaxation times and heteronuclear, 15N[1H]NOEs at two magnetic field strengths provided additional insights, into the dynamics of the protein backbone. On the basis of these new, results, a putative binding surface for this particular class of oncogenes, is discussed.
About this Structure
1QTU is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Backbone dynamics and solution structure refinement of the 15N-labeled human oncogenic protein p13MTCP1: comparison with X-ray data., Guignard L, Padilla A, Mispelter J, Yang YS, Stern MH, Lhoste JM, Roumestand C, J Biomol NMR. 2000 Jul;17(3):215-30. PMID:10959629
Page seeded by OCA on Fri Feb 15 16:45:59 2008
