GATA1 binding kinetics on conformation-specific binding sites elicit differential transcriptional regulation

Atsushi Hasegawa, Hiroshi Kaneko, Daishi Ishihara, Masahiro Nakamura, Akira Watanabe, Masayuki Yamamoto, Cecelia D. Trainor, Ritsuko Shimizu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


GATA1 organizes erythroid and megakaryocytic differentiation by orchestrating the expression of multiple genes that show diversified expression profiles. Here, we demonstrate that GATA1 monovalently binds to a single GATA motif (Single-GATA) while a monomeric GATA1 and a homodimeric GATA1 bivalently bind to two GATA motifs in palindromic (Pal-GATA) and direct-repeat (Tandem-GATA) arrangements, respectively, and form higher stoichiometric complexes on respective elements. The amino-terminal zinc (N) finger of GATA1 critically contributes to high occupancy of GATA1 on Pal-GATA. GATA1 lacking the N finger-DNA association fails to trigger a rate of target gene expression comparable to that seen with the wild-type GATA1, especially when expressed at low level. This study revealed that Pal-GATA and Tandem-GATA generate transcriptional responses from GATA1 target genes distinct from the response of Single-GATA. Our results support the notion that the distinct alignments in binding motifs are part of a critical regulatory strategy that diversifies and modulates transcriptional regulation by GATA1.

Original languageEnglish
Pages (from-to)2151-2167
Number of pages17
JournalMolecular and cellular biology
Issue number15
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology


Dive into the research topics of 'GATA1 binding kinetics on conformation-specific binding sites elicit differential transcriptional regulation'. Together they form a unique fingerprint.

Cite this