Bouché et al. (2002): Screening of cDNA expression libraries derived from plants exposed to stress, with 35S-labeled recombinant calmodulin as a probe, revealed a new family of proteins containing a transcription activation domain and two types of DNA-binding domains designated the CG-1 domain and the transcription factor immunoglobulin domain, ankyrin repeats, and a varying number of IQ calmodulin-binding motifs. Based on domain organization and amino acid sequence comparisons, similar proteins, with the same domain organization, were identified in the genomes of other multicellular organisms including human, Drosophila, and Caenorhabditis, whereas none were found in the complete genomes of single cell eukaryotes and prokaryotes. This family of proteins was designated calmodulin-binding transcription activators (CAMTAs).


Bouché, N; Scharlat, A; Snedden, W; Bouchez, D; Fromm, H. 2002. A novel family of calmodulin-binding transcription activators in multicellular organisms. J. Biol. Chem. 277(24):21851-61 PubMed


Class: TF
Number of species containing the TAP: 87
Number of available proteins: 493

The colour code corresponds to the rules for the domains:

should be contained
should not be contained

Domain rules:

(Domain names are clickable)

Phylogenetic tree for Archeaplastida:

To view the tree click here.

TAP distribution:

The following table shows the distribution of CAMTA over all species included in TAPscan. The values for e.g. a specific kingdom are shown in the tree below if you expand the tree for that kingdom.

Minimum Maximum Average Median Standard deviation

List of species containing CAMTA sorted by kingdomcladesupergrouporderfamily:

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expand kingdom Archaeplastida (499 proteins in 87 species)
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A list of species letter codes included in the protein names can be found here (opens in new tab).