| Structural highlights
Function
[GATA1_MOUSE] Transcriptional activator which probably serves as a general switch factor for erythroid development. It binds to DNA sites with the consensus sequence [AT]GATA[AG] within regulatory regions of globin genes and of other genes expressed in erythroid cells.[1] [2] [3] [4] [5] [USH_DROME] Transcription regulator that modulates expression mediated by transcription factors of the GATA family such as pnr and srp. Represses transcription of proneural achaete-scute complex (AS-C), which is usually activated by pnr. Involved in cardiogenesis, blood, and eye development. During hematopoiesis, it is required to restrict the number of crystal cells, probably via its interaction with the isoform SrpNC of srp. Negatively regulates expression of sr. Probably acts by interacting with the GATA-type zinc finger of proteins such as pnr and srp, possibly antagonizing the interaction between the GATA-type zinc finger and some cofactor.[6] [7] [8] [9] [10] [11]
Publication Abstract from PubMed
The control of red blood cell and megakaryocyte development by the regulatory protein GATA1 is a paradigm for transcriptional regulation of gene expression in cell lineage differentiation and maturation. Most GATA1-regulated events require GATA1 to bind FOG1, and essentially all GATA1-activated genes are cooccupied by a TAL1/E2A/LMO2/LDB1 complex; however, it is not known whether FOG1 and TAL1/E2A/LMO2/LDB1 are simultaneously recruited by GATA1. Our structural data reveal that the FOG1-binding domain of GATA1, the N finger, can also directly contact LMO2 and show that, despite the small size (< 50 residues) of the GATA1 N finger, both FOG1 and LMO2 can simultaneously bind this domain. LMO2 in turn can simultaneously contact both GATA1 and the DNA-binding protein TAL1/E2A at bipartite E-box/WGATAR sites. Taken together, our data provide the first structural snapshot of multiprotein complex formation at GATA1-dependent genes and support a model in which FOG1 and TAL1/E2A/LMO2/LDB1 can cooccupy E-box/WGATAR sites to facilitate GATA1-mediated activation of gene activation.
Structural basis of simultaneous recruitment of the transcriptional regulators LMO2 and FOG1/ZFPM1 by the transcription factor GATA1.,Wilkinson-White L, Gamsjaeger R, Dastmalchi S, Wienert B, Stokes PH, Crossley M, Mackay JP, Matthews JM Proc Natl Acad Sci U S A. 2011 Aug 15. PMID:21844373[12]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Martin DI, Orkin SH. Transcriptional activation and DNA binding by the erythroid factor GF-1/NF-E1/Eryf 1. Genes Dev. 1990 Nov;4(11):1886-98. PMID:2276623
- ↑ Crossley M, Orkin SH. Phosphorylation of the erythroid transcription factor GATA-1. J Biol Chem. 1994 Jun 17;269(24):16589-96. PMID:8206977
- ↑ Calligaris R, Bottardi S, Cogoi S, Apezteguia I, Santoro C. Alternative translation initiation site usage results in two functionally distinct forms of the GATA-1 transcription factor. Proc Natl Acad Sci U S A. 1995 Dec 5;92(25):11598-602. PMID:8524811
- ↑ Collavin L, Gostissa M, Avolio F, Secco P, Ronchi A, Santoro C, Del Sal G. Modification of the erythroid transcription factor GATA-1 by SUMO-1. Proc Natl Acad Sci U S A. 2004 Jun 15;101(24):8870-5. Epub 2004 Jun 1. PMID:15173587 doi:http://dx.doi.org/10.1073/pnas.0308605101
- ↑ Lamonica JM, Vakoc CR, Blobel GA. Acetylation of GATA-1 is required for chromatin occupancy. Blood. 2006 Dec 1;108(12):3736-8. Epub 2006 Aug 3. PMID:16888089 doi:http://dx.doi.org/10.1182/blood-2006-07-032847
- ↑ Cubadda Y, Heitzler P, Ray RP, Bourouis M, Ramain P, Gelbart W, Simpson P, Haenlin M. u-shaped encodes a zinc finger protein that regulates the proneural genes achaete and scute during the formation of bristles in Drosophila. Genes Dev. 1997 Nov 15;11(22):3083-95. PMID:9367989
- ↑ Haenlin M, Cubadda Y, Blondeau F, Heitzler P, Lutz Y, Simpson P, Ramain P. Transcriptional activity of pannier is regulated negatively by heterodimerization of the GATA DNA-binding domain with a cofactor encoded by the u-shaped gene of Drosophila. Genes Dev. 1997 Nov 15;11(22):3096-108. PMID:9367990
- ↑ Fossett N, Zhang Q, Gajewski K, Choi CY, Kim Y, Schulz RA. The multitype zinc-finger protein U-shaped functions in heart cell specification in the Drosophila embryo. Proc Natl Acad Sci U S A. 2000 Jun 20;97(13):7348-53. PMID:10861002
- ↑ Fossett N, Tevosian SG, Gajewski K, Zhang Q, Orkin SH, Schulz RA. The Friend of GATA proteins U-shaped, FOG-1, and FOG-2 function as negative regulators of blood, heart, and eye development in Drosophila. Proc Natl Acad Sci U S A. 2001 Jun 19;98(13):7342-7. Epub 2001 Jun 12. PMID:11404479 doi:http://dx.doi.org/10.1073/pnas.131215798
- ↑ Waltzer L, Bataille L, Peyrefitte S, Haenlin M. Two isoforms of Serpent containing either one or two GATA zinc fingers have different roles in Drosophila haematopoiesis. EMBO J. 2002 Oct 15;21(20):5477-86. PMID:12374748
- ↑ Ghazi A, Paul L, VijayRaghavan K. Prepattern genes and signaling molecules regulate stripe expression to specify Drosophila flight muscle attachment sites. Mech Dev. 2003 May;120(5):519-28. PMID:12782269
- ↑ Wilkinson-White L, Gamsjaeger R, Dastmalchi S, Wienert B, Stokes PH, Crossley M, Mackay JP, Matthews JM. Structural basis of simultaneous recruitment of the transcriptional regulators LMO2 and FOG1/ZFPM1 by the transcription factor GATA1. Proc Natl Acad Sci U S A. 2011 Aug 15. PMID:21844373 doi:10.1073/pnas.1105898108
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