Table 1.

Percentage identity matrix of the PPC domain from G. hollisae collagenase vs the CBDs from H. histolytica collagenases. The amino acid sequences of PPC domain (aa 647–767) from G. hollisae collagenase (NCBI accession number: BAK39964), ColG s3a (aa 888–999) and s3b (aa 1007–1118) from H. histolytica type I collagenases (NCBI accession number: D87215), and ColH s3 (aa 906–1016) from H. histolytica type II collagenases (NCBI accession number: AB014075) were aligned by clustal omega 10, and the identity matrix was constructed using a multiple protein sequence alignment

	G. hollisae	ColG s3b	ColH s3	ColG s3a
G. hollisae	100	11.24	21.84	22.73
ColG s3b	11.24	100	30.28	30.63
ColH s3	21.84	30.28	100	38.53
ColG s3a	22.73	30.63	38.53	100