The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases
- Autores
- Roberts, Irma; Di Bernardo, Maria Susana; Barneix, Atilio José
- Año de publicación
- 2006
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We have previously reported the occurrence of two serine endoproteases (referred as P1 and P2) in dark-induced senescent wheat (Triticum aestivum L.) leaves. P1 enzyme was already purified and identified as a subtilisin-like serine endoprotease. In this paper, we demonstrate by Western blot analysis of extracts obtained from dark-induced senescent leaves that an antiserum raised against P1 was able to recognise a second protein band of 78 kDa which corresponded to P2 activity. This result suggested that both enzymes must be structurally related. Therefore, we purified and characterized P2 activity. Its biochemical and physical properties (inhibition by chymostatin and PMSF, broad pH range of activity, thermostability and ability to hydrolyse Suc-AAPF-pNA) allowed its classification as chymotripsin-like protease. Samples of purified P1 and P2 were submitted to MALDI-TOF mass spectrometry analysis. Comparison of the peptide maps obtained clearly showed that P1 and P2 do not share peptides in common, although P2 was also identified as a subtilisin-like serine protease. Western blot analysis demonstrated that P1 was induced in non-detached dark-induced senescent leaves but was not detectable in senescent leaves promoted by nitrogen (N) deprivation. In contrast, P2 was already present in non-senescent leaves and its expression increased by darkness as well as by N starvation. These results indicate that, despite their biochemical and structural similarities, both enzymes are probably involved in different physiological roles.
Fil: Roberts, Irma. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Di Bernardo, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Fil: Barneix, Atilio José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina - Materia
-
SUBTILISIN
SERIN PROTEASE
SENESCENCE
WHEAT - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/244124
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oai:ri.conicet.gov.ar:11336/244124 |
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3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteasesRoberts, IrmaDi Bernardo, Maria SusanaBarneix, Atilio JoséSUBTILISINSERIN PROTEASESENESCENCEWHEAThttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We have previously reported the occurrence of two serine endoproteases (referred as P1 and P2) in dark-induced senescent wheat (Triticum aestivum L.) leaves. P1 enzyme was already purified and identified as a subtilisin-like serine endoprotease. In this paper, we demonstrate by Western blot analysis of extracts obtained from dark-induced senescent leaves that an antiserum raised against P1 was able to recognise a second protein band of 78 kDa which corresponded to P2 activity. This result suggested that both enzymes must be structurally related. Therefore, we purified and characterized P2 activity. Its biochemical and physical properties (inhibition by chymostatin and PMSF, broad pH range of activity, thermostability and ability to hydrolyse Suc-AAPF-pNA) allowed its classification as chymotripsin-like protease. Samples of purified P1 and P2 were submitted to MALDI-TOF mass spectrometry analysis. Comparison of the peptide maps obtained clearly showed that P1 and P2 do not share peptides in common, although P2 was also identified as a subtilisin-like serine protease. Western blot analysis demonstrated that P1 was induced in non-detached dark-induced senescent leaves but was not detectable in senescent leaves promoted by nitrogen (N) deprivation. In contrast, P2 was already present in non-senescent leaves and its expression increased by darkness as well as by N starvation. These results indicate that, despite their biochemical and structural similarities, both enzymes are probably involved in different physiological roles.Fil: Roberts, Irma. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaFil: Di Bernardo, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaFil: Barneix, Atilio José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; ArgentinaSpringer2006-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244124Roberts, Irma; Di Bernardo, Maria Susana; Barneix, Atilio José; The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases; Springer; Planta; 224; 6; 6-2006; 1437-14470032-0935CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00425-006-0312-2info:eu-repo/semantics/altIdentifier/doi/10.1007/s00425-006-0312-2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:43Zoai:ri.conicet.gov.ar:11336/244124instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:43.338CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
title |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
spellingShingle |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases Roberts, Irma SUBTILISIN SERIN PROTEASE SENESCENCE WHEAT |
title_short |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
title_full |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
title_fullStr |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
title_full_unstemmed |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
title_sort |
The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases |
dc.creator.none.fl_str_mv |
Roberts, Irma Di Bernardo, Maria Susana Barneix, Atilio José |
author |
Roberts, Irma |
author_facet |
Roberts, Irma Di Bernardo, Maria Susana Barneix, Atilio José |
author_role |
author |
author2 |
Di Bernardo, Maria Susana Barneix, Atilio José |
author2_role |
author author |
dc.subject.none.fl_str_mv |
SUBTILISIN SERIN PROTEASE SENESCENCE WHEAT |
topic |
SUBTILISIN SERIN PROTEASE SENESCENCE WHEAT |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We have previously reported the occurrence of two serine endoproteases (referred as P1 and P2) in dark-induced senescent wheat (Triticum aestivum L.) leaves. P1 enzyme was already purified and identified as a subtilisin-like serine endoprotease. In this paper, we demonstrate by Western blot analysis of extracts obtained from dark-induced senescent leaves that an antiserum raised against P1 was able to recognise a second protein band of 78 kDa which corresponded to P2 activity. This result suggested that both enzymes must be structurally related. Therefore, we purified and characterized P2 activity. Its biochemical and physical properties (inhibition by chymostatin and PMSF, broad pH range of activity, thermostability and ability to hydrolyse Suc-AAPF-pNA) allowed its classification as chymotripsin-like protease. Samples of purified P1 and P2 were submitted to MALDI-TOF mass spectrometry analysis. Comparison of the peptide maps obtained clearly showed that P1 and P2 do not share peptides in common, although P2 was also identified as a subtilisin-like serine protease. Western blot analysis demonstrated that P1 was induced in non-detached dark-induced senescent leaves but was not detectable in senescent leaves promoted by nitrogen (N) deprivation. In contrast, P2 was already present in non-senescent leaves and its expression increased by darkness as well as by N starvation. These results indicate that, despite their biochemical and structural similarities, both enzymes are probably involved in different physiological roles. Fil: Roberts, Irma. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina Fil: Di Bernardo, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina Fil: Barneix, Atilio José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina |
description |
We have previously reported the occurrence of two serine endoproteases (referred as P1 and P2) in dark-induced senescent wheat (Triticum aestivum L.) leaves. P1 enzyme was already purified and identified as a subtilisin-like serine endoprotease. In this paper, we demonstrate by Western blot analysis of extracts obtained from dark-induced senescent leaves that an antiserum raised against P1 was able to recognise a second protein band of 78 kDa which corresponded to P2 activity. This result suggested that both enzymes must be structurally related. Therefore, we purified and characterized P2 activity. Its biochemical and physical properties (inhibition by chymostatin and PMSF, broad pH range of activity, thermostability and ability to hydrolyse Suc-AAPF-pNA) allowed its classification as chymotripsin-like protease. Samples of purified P1 and P2 were submitted to MALDI-TOF mass spectrometry analysis. Comparison of the peptide maps obtained clearly showed that P1 and P2 do not share peptides in common, although P2 was also identified as a subtilisin-like serine protease. Western blot analysis demonstrated that P1 was induced in non-detached dark-induced senescent leaves but was not detectable in senescent leaves promoted by nitrogen (N) deprivation. In contrast, P2 was already present in non-senescent leaves and its expression increased by darkness as well as by N starvation. These results indicate that, despite their biochemical and structural similarities, both enzymes are probably involved in different physiological roles. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/244124 Roberts, Irma; Di Bernardo, Maria Susana; Barneix, Atilio José; The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases; Springer; Planta; 224; 6; 6-2006; 1437-1447 0032-0935 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/244124 |
identifier_str_mv |
Roberts, Irma; Di Bernardo, Maria Susana; Barneix, Atilio José; The two main endoproteases present in dark-induced senescent wheat leaves are distinct subtilisin-like proteases; Springer; Planta; 224; 6; 6-2006; 1437-1447 0032-0935 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00425-006-0312-2 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00425-006-0312-2 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269970910674944 |
score |
13.13397 |