Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus)
Cathepsin B is an enzymatic protein belonging to the peptidase C1 family. It is involved in diverse physiological and pathological functions that include immune response. In this study, we identified and characterized a cathepsin B homolog (SmCatB) from turbot (Scophthalmus maximus). SmCatB is compo...
Published in: | Fish Physiology and Biochemistry |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/25441 2023-05-15T18:15:40+02:00 Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) Zhou, Ze-jun Qiu, Reng Zhang, Jian 2015-04-01 http://ir.qdio.ac.cn/handle/337002/25441 https://doi.org/10.1007/s10695-014-9998-4 英语 eng FISH PHYSIOLOGY AND BIOCHEMISTRY http://ir.qdio.ac.cn/handle/337002/25441 doi:10.1007/s10695-014-9998-4 Cathepsin b Scophthalmus Maximus Expression Cysteine Protease Article 期刊论文 2015 ftchinacasciocas https://doi.org/10.1007/s10695-014-9998-4 2022-06-27T05:36:55Z Cathepsin B is an enzymatic protein belonging to the peptidase C1 family. It is involved in diverse physiological and pathological functions that include immune response. In this study, we identified and characterized a cathepsin B homolog (SmCatB) from turbot (Scophthalmus maximus). SmCatB is composed of 330 amino acid residues and possesses typical domain architecture of cathepsin B, which contains a propeptide region and a cysteine protease domain, and the latter processes four conserved residues (Q101, C107, H277, and N297) in the active site. SmCatB shares 80.6-87.6 % overall sequence identities with the cathepsin B of a number of teleost. SmCatB expression was detected in a wide range of tissues and upregulated by bacterial infection in a time-dependent manner. Recombinant SmCatB (rSmCatB-WT) purified from Escherichia coli exhibited apparent protease activity, which was optimal at 50 degrees C and pH 5.5. Compared to rSmCatB-WT, the mutant proteins rSmCatB-C107S, rSmCatB-H277A, and rSmCatB-N297A, which bear C107S, H277A, and N297A mutations, respectively, were significantly reduced in protease activity, with the highest reduction observed with rSmCatB-N297A. These results indicate that SmCatB is a bioactive protease that depends on the conserved structural features and that SmCatB is involved in pathogen-induced immune response. Article in Journal/Newspaper Scophthalmus maximus Turbot Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Fish Physiology and Biochemistry 41 2 473 483 |
institution |
Open Polar |
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Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Cathepsin b Scophthalmus Maximus Expression Cysteine Protease |
spellingShingle |
Cathepsin b Scophthalmus Maximus Expression Cysteine Protease Zhou, Ze-jun Qiu, Reng Zhang, Jian Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
topic_facet |
Cathepsin b Scophthalmus Maximus Expression Cysteine Protease |
description |
Cathepsin B is an enzymatic protein belonging to the peptidase C1 family. It is involved in diverse physiological and pathological functions that include immune response. In this study, we identified and characterized a cathepsin B homolog (SmCatB) from turbot (Scophthalmus maximus). SmCatB is composed of 330 amino acid residues and possesses typical domain architecture of cathepsin B, which contains a propeptide region and a cysteine protease domain, and the latter processes four conserved residues (Q101, C107, H277, and N297) in the active site. SmCatB shares 80.6-87.6 % overall sequence identities with the cathepsin B of a number of teleost. SmCatB expression was detected in a wide range of tissues and upregulated by bacterial infection in a time-dependent manner. Recombinant SmCatB (rSmCatB-WT) purified from Escherichia coli exhibited apparent protease activity, which was optimal at 50 degrees C and pH 5.5. Compared to rSmCatB-WT, the mutant proteins rSmCatB-C107S, rSmCatB-H277A, and rSmCatB-N297A, which bear C107S, H277A, and N297A mutations, respectively, were significantly reduced in protease activity, with the highest reduction observed with rSmCatB-N297A. These results indicate that SmCatB is a bioactive protease that depends on the conserved structural features and that SmCatB is involved in pathogen-induced immune response. |
format |
Article in Journal/Newspaper |
author |
Zhou, Ze-jun Qiu, Reng Zhang, Jian |
author_facet |
Zhou, Ze-jun Qiu, Reng Zhang, Jian |
author_sort |
Zhou, Ze-jun |
title |
Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
title_short |
Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
title_full |
Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
title_fullStr |
Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
title_full_unstemmed |
Molecular characterization of the cathepsin B of turbot (Scophthalmus maximus) |
title_sort |
molecular characterization of the cathepsin b of turbot (scophthalmus maximus) |
publishDate |
2015 |
url |
http://ir.qdio.ac.cn/handle/337002/25441 https://doi.org/10.1007/s10695-014-9998-4 |
genre |
Scophthalmus maximus Turbot |
genre_facet |
Scophthalmus maximus Turbot |
op_relation |
FISH PHYSIOLOGY AND BIOCHEMISTRY http://ir.qdio.ac.cn/handle/337002/25441 doi:10.1007/s10695-014-9998-4 |
op_doi |
https://doi.org/10.1007/s10695-014-9998-4 |
container_title |
Fish Physiology and Biochemistry |
container_volume |
41 |
container_issue |
2 |
container_start_page |
473 |
op_container_end_page |
483 |
_version_ |
1766188846004830208 |