Origin and Status of Homologous Proteins of Biomineralization (Biosilicification) in the Taxonomy of Phylogenetic Domains

Table 1

Quantitative distribution of the homologues with respect to origin.

Domains of biological taxonomy	Titles of POB
	Silaffins	Silacidins	Silicateins	Silicase
Viruses	1%	0.8%	—	—
Archaea	0.6%	—	—	—
Bacteria	38.4%	—	—	—
Eukaryote	60%	99.2%	100%	100%
Total number of homologues	741	82	686	249

Note: peptides and proteins belonging to the group of proteins under study shown in the list of homologues were not considered.