3nfb

Structural highlights

Function

[BAPA_SPHXN] Beta-aminopeptidase that can cleave synthetic beta-peptides which consist of backbone-elongated beta-amino acid residues that are not processed by common proteolytic enzymes. Can cleave the beta-peptides beta-homoVal-beta-homoAla-beta-homoLeu and beta-homoAla-beta-homoLeu. Requires a beta-amino acid at the N-terminus of peptide substrates and cleaves the peptide bond between the N-terminal beta-amino acid and the amino acid at the second position of tripeptidic substrates of the general structure H-betahXaa-Ile-betahTyr-OH according to the following preferences with regard to the side chain of the N-terminal beta-amino acid: aliphatic and aromatic > OH-containing > hydrogen, basic and polar.^{[1] [2]}

See Also

• Aminopeptidase

References

1. ↑ Geueke B, Namoto K, Seebach D, Kohler HP. A novel beta-peptidyl aminopeptidase (BapA) from strain 3-2W4 cleaves peptide bonds of synthetic beta-tri- and beta-dipeptides. J Bacteriol. 2005 Sep;187(17):5910-7. PMID:16109932 doi:http://dx.doi.org/187/17/5910
2. ↑ Geueke B, Heck T, Limbach M, Nesatyy V, Seebach D, Kohler HP. Bacterial beta-peptidyl aminopeptidases with unique substrate specificities for beta-oligopeptides and mixed beta,alpha-oligopeptides. FEBS J. 2006 Dec;273(23):5261-72. Epub 2006 Oct 25. PMID:17064315 doi:http://dx.doi.org/10.1111/j.1742-4658.2006.05519.x