S46 peptidases are the first exopeptidases to be members of clan PA
Sakamoto, Y., Suzuki, Y., Iizuka, I., Tateoka, C., Roppongi, S., Fujimoto, M., Inaka, K., Tanaka, H., Masaki, M., Ohta, K., Okada, H., Nonaka, T., Morikawa, Y., Nakamura, K.T., Ogasawara, W., Tanaka, N.(2014) Sci Rep 4: 4977-4977
- PubMed: 24827749 
- DOI: 10.1038/srep04977
- Primary Citation of Related Structures:  
3WOI, 3WOJ, 3WOK, 3WOL, 3WOM, 3WON, 3WOO, 3WOP, 3WOQ, 3WOR - PubMed Abstract: 
The dipeptidyl aminopeptidase BII (DAP BII) belongs to a serine peptidase family, S46. The amino acid sequence of the catalytic unit of DAP BII exhibits significant similarity to those of clan PA endopeptidases, such as chymotrypsin. However, the molecular mechanism of the exopeptidase activity of family S46 peptidase is unknown ...