Table 1.

Homology analysis of AprX-SK37 and other enzymes in the subtilase superfamily

Family	Protein name	Organism	UniProt ID	Identity (%)	Similarity (%)	References
A	Subtilisin E	Bacillus subtilis subsp. subtilis 168	P04189	26.9	32.9	[50]
B	Thermitase	Thermoactinomyces vulgaris	P04072	23.7	23.7	[51]
C	Proteunase K	Tritirachium album limber	P06873	22.3	31.6	[52]
D	lantibiotic leader peptidase	Lactobacillus sakei L45	Q48854	9.5	26.7	[53]
E	kexin	Saccharomyces cerevisiae	P13134	20.9	44.5	[54]
F	pyrolysin	Pyrococcus furiosus	P72186	27.4	38.1	[55]

Note: Percent identity and similarity were calculated by the ClastalW2 and expressed as percentage compared to AprX-SK37 sequence. Protein ID(s) were retrieved from the UniPort databank (http://www.uniprot.org/)