TY - JOUR
T1 - Novel Kazal-type proteinase inhibitors from the skin secretion of the Splendid leaf frog, Cruziohyla calcarifer
AU - Proaño-Bolaños, Carolina
AU - Li, Renjie
AU - Zhou, Mei
AU - Wang, Lei
AU - Xi, Xinping
AU - Tapia, Elicio E.
AU - Coloma, Luis A.
AU - Chen, Tianbao
AU - Shaw, Chris
N1 - Publisher Copyright:
© 2017 The Authors
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Peptidase inhibitors have an important role controlling a variety of biological processes. Here, we employed a peptidomic approach including molecular cloning, tandem mass spectrometry and enzymatic assays to reveal 7 Kazal-type proteinase inhibitors (CCKPs) (18 variants) in the skin secretion of the unexplored frog, Cruziohyla calcarifer. All 18 proteins shared the Kazal pattern C-X(7)-C-X(6,7)-C-X(6,7)-Y-X(3)-C-X(2)-C-X(15-21)-C and 3 disulphide bridges. Based on structural comparative analysis, we deemed trypsin and chymotrypsin inhibitory activity in CCKP-1, 4 and CCKP 2, 5, 7, respectively. These peptidase inhibitors presumably play a role to control the balance between other functional peptides produced in the amphibian skin secretions.
AB - Peptidase inhibitors have an important role controlling a variety of biological processes. Here, we employed a peptidomic approach including molecular cloning, tandem mass spectrometry and enzymatic assays to reveal 7 Kazal-type proteinase inhibitors (CCKPs) (18 variants) in the skin secretion of the unexplored frog, Cruziohyla calcarifer. All 18 proteins shared the Kazal pattern C-X(7)-C-X(6,7)-C-X(6,7)-Y-X(3)-C-X(2)-C-X(15-21)-C and 3 disulphide bridges. Based on structural comparative analysis, we deemed trypsin and chymotrypsin inhibitory activity in CCKP-1, 4 and CCKP 2, 5, 7, respectively. These peptidase inhibitors presumably play a role to control the balance between other functional peptides produced in the amphibian skin secretions.
KW - Cruziohyla calcarifer
KW - Frog skin secretion
KW - Kazal-type proteinase inhibitors
KW - Molecular cloning
KW - Peptidomic
KW - Tandem mass spectrometry
UR - http://www.scopus.com/inward/record.url?scp=85016956554&partnerID=8YFLogxK
U2 - 10.1016/j.euprot.2017.02.001
DO - 10.1016/j.euprot.2017.02.001
M3 - Artículo
AN - SCOPUS:85016956554
SN - 2212-9685
VL - 15
SP - 1
EP - 13
JO - EuPA Open Proteomics
JF - EuPA Open Proteomics
ER -