First Author | Wu XQ | Year | 1997 |
Journal | Proc Natl Acad Sci U S A | Volume | 94 |
Issue | 11 | Pages | 5640-5 |
PubMed ID | 9159125 | Mgi Jnum | J:40913 |
Mgi Id | MGI:892632 | Doi | 10.1073/pnas.94.11.5640 |
Citation | Wu XQ, et al. (1997) The RNA-binding protein, TB-RBP, is the mouse homologue of translin, a recombination protein associated with chromosomal translocations. Proc Natl Acad Sci U S A 94(11):5640-5 |
abstractText | The mouse RNA-binding protein, TB-RBP, suppresses translation in vitro and attaches mRNAs to microtubules by binding to conserved elements in the 3' untranslated regions of specific mRNAs, We have now purified TB-RBP from testicular and brain cytoplasmic extracts and cloned its cDNA, We find that the mouse TB-RBP cDNAs contain an open reading frame of 228 amino acids with a leucine zipper domain within its C terminus, a transmembrane helix, and a group of putative phosphorylation sites, TB- RBP shows 99% identity to the human protein, translin, a recombination hotspot-binding protein associated with chromosomal translocations [Aoki, K., Suzuki, K., Sugano, T., Tasaka, T., Nakahara, K., Kuge, O., Omori, A. & Kasai, M. (1995) Nat., Genet. 10, 167-174], As shown for translin, TB-RBP also binds to single-stranded DNAs containing a broad range of consensus sequences, many of which are similar to the Y and H RNA-binding sequences, Recombinant TB-RBP was synthesized and an antiserum was prepared against the recombinant protein, The identity between translin and TB-RBP was confirmed by demonstrating that immunoprecipitation of TB-RBP from testicular extracts abolished formation of the RNA-TB-RBP complex, Based upon its DNA binding to target sequences in clustered breakpoint regions, we propose that TB-RBP may be involved in DNA recombination or DNA repair in male germ cells. |