Table 2.
Comparisons of the number of putative peptide receptor genes with the number of putative peptide precursor genes/peptide isoforms for Cancer borealis
| Peptide family | Number of receptor genes | Number of peptide precursor genes | Number of peptide isoforms |
|---|---|---|---|
| Adipokinetic hormone-corazonin-like peptide | 1 | NI | 1e |
| Allatostatin A | 1 | 1 | 30b |
| Allatostatin B | 1 | 1 | 8b |
| Allatostatin C | 1 | 2 | 2c |
| Bursicon | 1 | NI | 1e† |
| CCHamide | 5 | 1 | 1c |
| Corazonin | 2 | NI | 1d |
| Crustacean cardioactive peptide | 1 | 1 | 1a |
| Crustacean hyperglycemic hormone | NI | 1 | 1c |
| Diuretic hormone 31 | 1 | 1 | 1a |
| Diuretic hormone 44 | 1 | 1 | 1a |
| Ecdysis-triggering hormone | 3 | NI | ?f |
| FMRFamide-like peptide | 2 | 1 | 9b |
| Glycoprotein hormone | 1 | 2a | 1a† |
| GSEFLamide | RU | 1 | 2b |
| HIGSLYRamide | RU | 1 | 5b |
| Inotocin | 1 | 1 | 1a |
| Insulin-like peptide | NI | 1 | 1a* |
| Leucokinin | 1 | 1 | 2b |
| Myosuppressin | 2 | NI | 1d |
| Neuroparsin | RU | 4 | 4a |
| Neuropeptide F | 4 | NI | 3e |
| Orcokinin | RU | NI | 4e |
| Orcomyotropin | RU | NI | 1d |
| Pigment dispersing hormone | 3 | 1 | 1c |
| Proctolin | 1 | NI | 1d |
| Pyrokinin | 1 | 1 | 10a |
| Red pigment concentrating hormone | 1 | 1 | 1a |
| RYamide | 2 | NI | 3d |
| Short neuropeptide F | 1 | 1 | 3a |
| SIFamide | 2 | 1 | 1a |
| Sulfakinin | 1 | NI | 2e |
| Tachykinin-related peptide | 3 | NI | 2d |
| Trissin | 1 | 1 | 1a |
Abbreviations: NI, none identified (searched for in the C. borealis transcriptome, but no transcript encoding the protein in question identified); RU, receptor(s) unknown.
Isoform diversity based on the number of isoforms present in full-length pre/preprohormones deduced from C. borealis transcriptomic data (Christie and Pascual, 2016) and where the number of genes identified is likely complete.
Isoform diversity based on the number of isoforms present in partial pre/preprohormones deduced from C. borealis transcriptomic data (Christie and Pascual, 2016) and where the number of genes identified is likely complete; number of isoforms reported may be an underestimate.
Isoform diversity based on the number of isoforms present in full-length and/or partial pre/preprohormones deduced from C. borealis transcriptomic data (Christie and Pascual, 2016) but where the number of genes identified is likely incomplete based on data from other decapod species (e.g., Christie and Yu, 2019; Christie et al., 2017); number of isoforms reported is likely to be an underestimate.
Isoform diversity based on the number of isoforms detected via mass spectrometry and/or other methods in C. borealis and where the reported number is likely complete (e.g., Fu et al., 2005a; Huybrechts et al., 2003; Li et al., 2002, 2003; Stemmler et al., 2007a, 2007b).
No isoform diversity data from C. borealis; the number of isoforms reported is a prediction based on isoform conservation in decapods for which members of the family have been identified (e.g., Christie and Yu, 2019; Christie et al., 2017).
No authentic isoforms of ecdysis-triggering hormone have been identified in any member of the Decapoda and thus there is no ability at this time to predict isoform diversity for this peptide family.
Mature bioactive hormone consists of a heterodimer with each peptide subunit derived from separate genes.
Mature bioactive hormone consists of a heterodimer with each peptide subunit derived from the same gene.