An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2
- Autores
- Zlocowski, Natacha; Lorenz, Virginia; Bennett, Eric P.; Clausen, Henrik; Nores, Gustavo Alejandro; Irazoqui, Fernando Jose
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Polypeptide GalNAc-transferases (ppGalNAc-Ts) are a family of enzymes that catalyze the initiation of mucintype O -glycosylation. All ppGalNAc-T family members contain a common (QXW) 3 motif, which is present in the R-type lectin group. The acetylation site K521 is part of the QKW motif of β -trefoil in the lectin domain of ppGalNAcT2. We used a combination of acetylation and site-directed mutagenesis approaches to examine the functional role of K521 in ppGalNAc-T2. Binding assays of non-acetylated and acetylated forms of the mutant ppGalNAc-T2 K521Q to various naked and α GalNAc-glycosylated mucin peptides indicated that the degree of interaction of lectin domain with α GalNAc depends on the peptide sequence of mucin. Studies of the inhibitory effect of various carbohydrates on the interactions of ppGalNAc-T2 with MUC1 α GalNAc indicate that point K521Q mutation enhance the carbohydrate specificity of lectin domain for α GalNAc. K521Q mutation resulted in an enzyme activity lower than that of the wildtype ppGalNAc-T2, similar to the acetylation of ppGalNAcT2. We conclude that an acetylation site in the QKW motif of the lectin domain modulates carbohydrate recognition specificity and catalytic activity of ppGalNAc-T2 for partially preglycosylated acceptors and a certain naked peptide. Posttranslational modifications of ppGalNAcTs, such as acetylation, may play key roles in modulating the functions of the R-type lectin domains in cellular homeostasis.
Fil: Zlocowski, Natacha. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina
Fil: Lorenz, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina
Fil: Bennett, Eric P.. Universidad de Copenhagen; Dinamarca
Fil: Clausen, Henrik. Universidad de Copenhagen; Dinamarca
Fil: Nores, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina
Fil: Irazoqui, Fernando Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina - Materia
-
Acetilation
Lectin Domain
Ppgalnac-Transferase - 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:11336/24987
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oai:ri.conicet.gov.ar:11336/24987 |
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An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2Zlocowski, NatachaLorenz, VirginiaBennett, Eric P.Clausen, HenrikNores, Gustavo AlejandroIrazoqui, Fernando JoseAcetilationLectin DomainPpgalnac-Transferasehttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Polypeptide GalNAc-transferases (ppGalNAc-Ts) are a family of enzymes that catalyze the initiation of mucintype O -glycosylation. All ppGalNAc-T family members contain a common (QXW) 3 motif, which is present in the R-type lectin group. The acetylation site K521 is part of the QKW motif of β -trefoil in the lectin domain of ppGalNAcT2. We used a combination of acetylation and site-directed mutagenesis approaches to examine the functional role of K521 in ppGalNAc-T2. Binding assays of non-acetylated and acetylated forms of the mutant ppGalNAc-T2 K521Q to various naked and α GalNAc-glycosylated mucin peptides indicated that the degree of interaction of lectin domain with α GalNAc depends on the peptide sequence of mucin. Studies of the inhibitory effect of various carbohydrates on the interactions of ppGalNAc-T2 with MUC1 α GalNAc indicate that point K521Q mutation enhance the carbohydrate specificity of lectin domain for α GalNAc. K521Q mutation resulted in an enzyme activity lower than that of the wildtype ppGalNAc-T2, similar to the acetylation of ppGalNAcT2. We conclude that an acetylation site in the QKW motif of the lectin domain modulates carbohydrate recognition specificity and catalytic activity of ppGalNAc-T2 for partially preglycosylated acceptors and a certain naked peptide. Posttranslational modifications of ppGalNAcTs, such as acetylation, may play key roles in modulating the functions of the R-type lectin domains in cellular homeostasis.Fil: Zlocowski, Natacha. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; ArgentinaFil: Lorenz, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; ArgentinaFil: Bennett, Eric P.. Universidad de Copenhagen; DinamarcaFil: Clausen, Henrik. Universidad de Copenhagen; DinamarcaFil: Nores, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; ArgentinaFil: Irazoqui, Fernando Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; ArgentinaDe Gruyter2012-12info: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/11336/24987Zlocowski, Natacha; Lorenz, Virginia; Bennett, Eric P.; Clausen, Henrik; Nores, Gustavo Alejandro; et al.; An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2; De Gruyter; Biological Chemistry; 394; 1; 12-2012; 69-771431-6730CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1515/hsz-2012-0191 info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/view/j/bchm.2013.394.issue-1/hsz-2012-0191/hsz-2012-0191.xmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:09Zoai:ri.conicet.gov.ar:11336/24987instacron: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 09:54:09.343CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
title |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
spellingShingle |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 Zlocowski, Natacha Acetilation Lectin Domain Ppgalnac-Transferase |
title_short |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
title_full |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
title_fullStr |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
title_full_unstemmed |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
title_sort |
An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2 |
dc.creator.none.fl_str_mv |
Zlocowski, Natacha Lorenz, Virginia Bennett, Eric P. Clausen, Henrik Nores, Gustavo Alejandro Irazoqui, Fernando Jose |
author |
Zlocowski, Natacha |
author_facet |
Zlocowski, Natacha Lorenz, Virginia Bennett, Eric P. Clausen, Henrik Nores, Gustavo Alejandro Irazoqui, Fernando Jose |
author_role |
author |
author2 |
Lorenz, Virginia Bennett, Eric P. Clausen, Henrik Nores, Gustavo Alejandro Irazoqui, Fernando Jose |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Acetilation Lectin Domain Ppgalnac-Transferase |
topic |
Acetilation Lectin Domain Ppgalnac-Transferase |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Polypeptide GalNAc-transferases (ppGalNAc-Ts) are a family of enzymes that catalyze the initiation of mucintype O -glycosylation. All ppGalNAc-T family members contain a common (QXW) 3 motif, which is present in the R-type lectin group. The acetylation site K521 is part of the QKW motif of β -trefoil in the lectin domain of ppGalNAcT2. We used a combination of acetylation and site-directed mutagenesis approaches to examine the functional role of K521 in ppGalNAc-T2. Binding assays of non-acetylated and acetylated forms of the mutant ppGalNAc-T2 K521Q to various naked and α GalNAc-glycosylated mucin peptides indicated that the degree of interaction of lectin domain with α GalNAc depends on the peptide sequence of mucin. Studies of the inhibitory effect of various carbohydrates on the interactions of ppGalNAc-T2 with MUC1 α GalNAc indicate that point K521Q mutation enhance the carbohydrate specificity of lectin domain for α GalNAc. K521Q mutation resulted in an enzyme activity lower than that of the wildtype ppGalNAc-T2, similar to the acetylation of ppGalNAcT2. We conclude that an acetylation site in the QKW motif of the lectin domain modulates carbohydrate recognition specificity and catalytic activity of ppGalNAc-T2 for partially preglycosylated acceptors and a certain naked peptide. Posttranslational modifications of ppGalNAcTs, such as acetylation, may play key roles in modulating the functions of the R-type lectin domains in cellular homeostasis. Fil: Zlocowski, Natacha. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina Fil: Lorenz, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina Fil: Bennett, Eric P.. Universidad de Copenhagen; Dinamarca Fil: Clausen, Henrik. Universidad de Copenhagen; Dinamarca Fil: Nores, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina Fil: Irazoqui, Fernando Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones En Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Centro de Investigaciones En Química Biológica de Córdoba; Argentina |
description |
Polypeptide GalNAc-transferases (ppGalNAc-Ts) are a family of enzymes that catalyze the initiation of mucintype O -glycosylation. All ppGalNAc-T family members contain a common (QXW) 3 motif, which is present in the R-type lectin group. The acetylation site K521 is part of the QKW motif of β -trefoil in the lectin domain of ppGalNAcT2. We used a combination of acetylation and site-directed mutagenesis approaches to examine the functional role of K521 in ppGalNAc-T2. Binding assays of non-acetylated and acetylated forms of the mutant ppGalNAc-T2 K521Q to various naked and α GalNAc-glycosylated mucin peptides indicated that the degree of interaction of lectin domain with α GalNAc depends on the peptide sequence of mucin. Studies of the inhibitory effect of various carbohydrates on the interactions of ppGalNAc-T2 with MUC1 α GalNAc indicate that point K521Q mutation enhance the carbohydrate specificity of lectin domain for α GalNAc. K521Q mutation resulted in an enzyme activity lower than that of the wildtype ppGalNAc-T2, similar to the acetylation of ppGalNAcT2. We conclude that an acetylation site in the QKW motif of the lectin domain modulates carbohydrate recognition specificity and catalytic activity of ppGalNAc-T2 for partially preglycosylated acceptors and a certain naked peptide. Posttranslational modifications of ppGalNAcTs, such as acetylation, may play key roles in modulating the functions of the R-type lectin domains in cellular homeostasis. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-12 |
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/11336/24987 Zlocowski, Natacha; Lorenz, Virginia; Bennett, Eric P.; Clausen, Henrik; Nores, Gustavo Alejandro; et al.; An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2; De Gruyter; Biological Chemistry; 394; 1; 12-2012; 69-77 1431-6730 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/24987 |
identifier_str_mv |
Zlocowski, Natacha; Lorenz, Virginia; Bennett, Eric P.; Clausen, Henrik; Nores, Gustavo Alejandro; et al.; An acetylation site in lectin domain modulates the biological activity of polypeptide GalNAc-transferase-2; De Gruyter; Biological Chemistry; 394; 1; 12-2012; 69-77 1431-6730 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1515/hsz-2012-0191 info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/view/j/bchm.2013.394.issue-1/hsz-2012-0191/hsz-2012-0191.xml |
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 |
De Gruyter |
publisher.none.fl_str_mv |
De Gruyter |
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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score |
13.13397 |