Abstract
MYB factors represent a family of proteins that include the conserved MYB DNA-binding domain. In contrast to animals, plants contain a MYB-protein subfamily that is characterised by the R2R3-type MYB domain. 'Classical' MYB factors, which are related to c-Myb, seem to be involved in the control of the cell cycle in animals, plants and other higher eukaryotes. Systematic screens for knockout mutations in MYB genes, followed by phenotypic analyses and the dissection of mutants with interesting phenotypes, have started to unravel the functions of the 125 R2R3-MYB genes in Arabidopsis thaliana. R2R3-type MYB genes control many aspects of plant secondary metabolism, as well as the identity and fate of plant cells.
MeSH terms
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Arabidopsis / genetics*
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Arabidopsis / metabolism
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Arabidopsis Proteins / classification
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Arabidopsis Proteins / genetics*
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Arabidopsis Proteins / physiology
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DNA-Binding Proteins / classification
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DNA-Binding Proteins / genetics*
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DNA-Binding Proteins / physiology
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Genes, Plant
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Multigene Family
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Phylogeny
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Plant Proteins / classification
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Plant Proteins / genetics*
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Plant Proteins / physiology
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Proto-Oncogene Proteins c-myb*
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Sequence Alignment
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Trans-Activators / classification
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Trans-Activators / genetics*
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Trans-Activators / physiology
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Transcription Factors
Substances
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ATR1 protein, Arabidopsis
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Arabidopsis Proteins
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CPC protein, Arabidopsis
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DNA-Binding Proteins
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MYB3R4 protein, Arabidopsis
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Plant Proteins
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Proto-Oncogene Proteins c-myb
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Trans-Activators
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Transcription Factors