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PROSITE documentation PDOC51806 [for PROSITE entry PS51806]

DOG1 domain profile





Description

The DELAY OF GERMINATION1 (DOG1) protein is a positive regulator for the establishment and maintenance of primary seed dormancy in plants. DOG1 is involved in transducing maternal environmental conditions during seed development into effects on seed dormancy and in the loss of dormancy through dry after-ripening or moist chilling. DOG1 belongs to a small family of proteins that can be classified into five distinct clades (1-5). Of these, DOG1-like proteins in clades 1-4 have a similar architecture to DOG1, sharing the same domain. In contrast, the clade 5 proteins are distinct: they harbor an additional bZIP domain (see <PDOC00036>), that interacts with DNA, and play a major role in disease resistance and development. The DOG1 domain is formed by Glutamine rich regions QI and QII and acidic amino acids and is likely to be a transcriptional activation domain [1,2,3,4,5].

Some proteins known to contain a DOG1 domain are listed below:

  • Arabidopsis thaliana DOG1, functions in seed dormancy and sugar signalling.
  • Arabidopsis thaliana PERIANTHIA (PAN), a bZIP protein involved in the determination of floral organ number.
  • Arabidopsis thaliana TGA1, a transcriptional activator that binds specifically to the DNA sequence 5'-TGACG-3'.
  • Tobacco TGA1a, a transcriptional activator that binds specifically to the DNA sequence 5'-TGACG-3'.
  • Wheat HBP-1b protein, a transcriptional activator that binds specifically to the DNA sequence 5'-TGACG-3'.

The profile we developed covers the entire DOG1 domain.

Last update:

July 2016 / First entry.

Technical section

PROSITE method (with tools and information) covered by this documentation:

DOG1, PS51806; DOG1 domain profile  (MATRIX)


References

1AuthorsChuang C.F. Running M.P. Williams R.W. Meyerowitz E.M.
TitleThe PERIANTHIA gene encodes a bZIP protein involved in the determination of floral organ number in Arabidopsis thaliana.
SourceGenes Dev. 13:334-344(1999).
PubMed ID9990857

2AuthorsBentsink L. Jowett J. Hanhart C.J. Koornneef M.
TitleCloning of DOG1, a quantitative trait locus controlling seed dormancy in Arabidopsis.
SourceProc. Natl. Acad. Sci. U.S.A. 103:17042-17047(2006).
PubMed ID17065317
DOI10.1073/pnas.0607877103

3AuthorsIdrovo Espin F.M. Peraza-Echeverria S. Fuentes G. Santamaria J.M.
TitleIn silico cloning and characterization of the TGA (TGACG MOTIF-BINDING FACTOR) transcription factors subfamily in Carica papaya.
SourcePlant Physiol. Biochem. 54:113-122(2012).
PubMed ID22410205
DOI10.1016/j.plaphy.2012.02.011

4AuthorsAshikawa I. Abe F. Nakamura S.
TitleDOG1-like genes in cereals: investigation of their function by means of ectopic expression in Arabidopsis.
SourcePlant Sci. 208:1-9(2013).
PubMed ID23683923
DOI10.1016/j.plantsci.2013.03.011

5AuthorsHuo H. Wei S. Bradford K.J.
TitleDELAY OF GERMINATION1 (DOG1) regulates both seed dormancy and flowering time through microRNA pathways.
SourceProc. Natl. Acad. Sci. U.S.A. 113:E2199-E2206(2016).
PubMed ID27035986
DOI10.1073/pnas.1600558113



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