H. Minakata et al., Comparison of precursor structures of the GGNG peptides derived from the earthworm Eisenia foetida and the leech Hirudo nipponia, BIOS BIOT B, 63(2), 1999, pp. 443-445
Earthworm and leech cDNAs encoding the GGNG peptides, a family of myotropic
peptides, were cloned and examined in this study. Both of the predicted pr
ecursor proteins are of polyprotein structure and contain several putative
peptides distinct from the GGNG peptides. However, the precursors show orga
nizations distinct from each other and no sequence similarity except for th
e GGNG peptides.