TLE, the human homolog of groucho, interacts with AML1 and acts as a repressor of AML1-induced transactivation.

Abstract:

:The AML1 gene encodes DNA-binding proteins that contain the Runt domain and is found at the breakpoints of some translocations associated with leukemias. It has been reported that AML1 plays pivotal roles in myeloid differentiation, probably through the transcriptional regulation of various hematopoietic genes. Here we demonstrate the physical and the functional interaction between AML1 and TLE1 (transducin-like Enhancer of split) human homolog of Groucho that is known to be a corepressor of Hairy-related proteins. TLE1 binds to AML1 through the Runt domain and the C terminus of AML1 that includes the VWRPY motif. The interaction is mainly mediated by the SP domain of TLE1. Moreover, TLE1 inhibits AML1-induced transactivation of the target promoters through the C terminus of AML1. These results suggest that TLE1 acts as a repressor of AML1 and provide important insights into the mechanism of the negative regulation of the AML1 functions in hematopoiesis and leukemogenesis.

authors

Imai Y,Kurokawa M,Tanaka K,Friedman AD,Ogawa S,Mitani K,Yazaki Y,Hirai H

doi

10.1006/bbrc.1998.9705

subject

Has Abstract

pub_date

1998-11-27 00:00:00

pages

582-9

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(98)99705-4

journal_volume

252

pub_type

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