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1: Proc Natl Acad Sci U S A. 1995 Oct 10;92(21):9585-9.Click here to read Links

Association of erythroid transcription factors: complexes involving the LIM protein RBTN2 and the zinc-finger protein GATA1.

Osada H, Grutz G, Axelson H, Forster A, Rabbitts TH.

Laboratory of Molecular Biology, Medical Research Council, Cambridge, United Kingdom.

The RBTN2 LIM-domain protein, originally identified as an oncogenic protein in human T-cell leukemia, is essential for erythropoiesis. A possible role for RBTN2 in transcription during erythropoiesis has been investigated. Direct interaction of the RBTN2 protein was observed in vivo and in vitro with the GATA1 or -2 zinc-finger transcription factors, as well as with the basic helix-loop-helix protein TAL1. By using mammalian two-hybrid analysis, complexes involving RBTN2, TAL1, and GATA1, together with E47, the basic helix-loop-helix heterodimerization partner of TAL1, could be demonstrated. Thus, a molecular link exists between three proteins crucial for erythropoiesis, and the data suggest that variations in amounts of complexes involving RBTN2, TAL1, and GATA1 could be important for erythroid differentiation.

PMID: 7568177 [PubMed - indexed for MEDLINE]

PMCID: PMC40846