Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II
- Autores
- Ruggiero, Fernando Miguel; Vilcaes, Aldo Alejandro; Iglesias Bartolome, Ramiro; Daniotti, Jose Luis
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- ST3Gal-II, a type II transmembrane protein, is the main mammalian sialyltransferase responsible for GD1a and GT1b ganglioside biosynthesis in brain. It contains two putative N-glycosylation sites (Asn92 and Asn211). Whereas Asn92 is only conserved in mammalian species, Asn211 is highly conserved in mammals, birds and fish. The present study explores the occupancy and relevance for intracellular trafficking and enzyme activity of these potential N-glycosylations in human ST3Gal-II. We found that ST3Gal-II distributes along the Golgi complex, mainly in proximal compartments. By pharmacological, biochemical and site-directed mutagenesis, we observed that ST3Gal-II is mostly N-glycosylated at Asn211 and that this co-translational modification is critical for its exit from the endoplasmic reticulum and proper Golgi localization. The individual N-glycosylation sites had different effects on ST3Gal-II enzymatic activity. Whereas the N-glycan at position Asn211 seems to negatively influence the activity of the enzyme using both glycolipid and glycoprotein as acceptor substrates, the single N-glycan mutant at Asn92 had only a moderate effect. Lastly, we demonstrated that the N-terminal ST3Gal-II domain containing the cytosolic, transmembrane and stem region (amino acids 1-51) is able to drive a protein reporter out of the endoplasmic reticulum and to retain it in the Golgi complex. This suggests that the C-terminal domain of ST3Gal-II depends on N-glycosylation to attain an optimum conformation for proper exit from the endoplasmic reticulum, but it does not represent an absolute requirement for Golgi complex retention of the enzyme.
Fil: Ruggiero, Fernando Miguel. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Vilcaes, Aldo 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina
Fil: Iglesias Bartolome, Ramiro. National Institutes of Health; Estados Unidos
Fil: Daniotti, Jose Luis. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina - Materia
-
Ganglioside
Glycolipid
Golgi Complex
N-Glycan Trimming
N-Glycosylation
Sialyltransferase
St3gal-Ii - 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:11336/50863
Ver los metadatos del registro completo
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spelling |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-IIRuggiero, Fernando MiguelVilcaes, Aldo AlejandroIglesias Bartolome, RamiroDaniotti, Jose LuisGangliosideGlycolipidGolgi ComplexN-Glycan TrimmingN-GlycosylationSialyltransferaseSt3gal-Iihttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1ST3Gal-II, a type II transmembrane protein, is the main mammalian sialyltransferase responsible for GD1a and GT1b ganglioside biosynthesis in brain. It contains two putative N-glycosylation sites (Asn92 and Asn211). Whereas Asn92 is only conserved in mammalian species, Asn211 is highly conserved in mammals, birds and fish. The present study explores the occupancy and relevance for intracellular trafficking and enzyme activity of these potential N-glycosylations in human ST3Gal-II. We found that ST3Gal-II distributes along the Golgi complex, mainly in proximal compartments. By pharmacological, biochemical and site-directed mutagenesis, we observed that ST3Gal-II is mostly N-glycosylated at Asn211 and that this co-translational modification is critical for its exit from the endoplasmic reticulum and proper Golgi localization. The individual N-glycosylation sites had different effects on ST3Gal-II enzymatic activity. Whereas the N-glycan at position Asn211 seems to negatively influence the activity of the enzyme using both glycolipid and glycoprotein as acceptor substrates, the single N-glycan mutant at Asn92 had only a moderate effect. Lastly, we demonstrated that the N-terminal ST3Gal-II domain containing the cytosolic, transmembrane and stem region (amino acids 1-51) is able to drive a protein reporter out of the endoplasmic reticulum and to retain it in the Golgi complex. This suggests that the C-terminal domain of ST3Gal-II depends on N-glycosylation to attain an optimum conformation for proper exit from the endoplasmic reticulum, but it does not represent an absolute requirement for Golgi complex retention of the enzyme.Fil: Ruggiero, Fernando Miguel. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Vilcaes, Aldo 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaFil: Iglesias Bartolome, Ramiro. National Institutes of Health; Estados UnidosFil: Daniotti, Jose Luis. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; ArgentinaPortland Press2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50863Ruggiero, Fernando Miguel; Vilcaes, Aldo Alejandro; Iglesias Bartolome, Ramiro; Daniotti, Jose Luis; Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II; Portland Press; Biochemical Journal; 469; 1; 7-2015; 83-950264-60211470-8728CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.biochemj.org/content/469/1/83info:eu-repo/semantics/altIdentifier/doi/10.1042/BJ20150072info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:31Zoai:ri.conicet.gov.ar:11336/50863instacron: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 10:00:31.98CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
title |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
spellingShingle |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II Ruggiero, Fernando Miguel Ganglioside Glycolipid Golgi Complex N-Glycan Trimming N-Glycosylation Sialyltransferase St3gal-Ii |
title_short |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
title_full |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
title_fullStr |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
title_full_unstemmed |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
title_sort |
Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II |
dc.creator.none.fl_str_mv |
Ruggiero, Fernando Miguel Vilcaes, Aldo Alejandro Iglesias Bartolome, Ramiro Daniotti, Jose Luis |
author |
Ruggiero, Fernando Miguel |
author_facet |
Ruggiero, Fernando Miguel Vilcaes, Aldo Alejandro Iglesias Bartolome, Ramiro Daniotti, Jose Luis |
author_role |
author |
author2 |
Vilcaes, Aldo Alejandro Iglesias Bartolome, Ramiro Daniotti, Jose Luis |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Ganglioside Glycolipid Golgi Complex N-Glycan Trimming N-Glycosylation Sialyltransferase St3gal-Ii |
topic |
Ganglioside Glycolipid Golgi Complex N-Glycan Trimming N-Glycosylation Sialyltransferase St3gal-Ii |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
ST3Gal-II, a type II transmembrane protein, is the main mammalian sialyltransferase responsible for GD1a and GT1b ganglioside biosynthesis in brain. It contains two putative N-glycosylation sites (Asn92 and Asn211). Whereas Asn92 is only conserved in mammalian species, Asn211 is highly conserved in mammals, birds and fish. The present study explores the occupancy and relevance for intracellular trafficking and enzyme activity of these potential N-glycosylations in human ST3Gal-II. We found that ST3Gal-II distributes along the Golgi complex, mainly in proximal compartments. By pharmacological, biochemical and site-directed mutagenesis, we observed that ST3Gal-II is mostly N-glycosylated at Asn211 and that this co-translational modification is critical for its exit from the endoplasmic reticulum and proper Golgi localization. The individual N-glycosylation sites had different effects on ST3Gal-II enzymatic activity. Whereas the N-glycan at position Asn211 seems to negatively influence the activity of the enzyme using both glycolipid and glycoprotein as acceptor substrates, the single N-glycan mutant at Asn92 had only a moderate effect. Lastly, we demonstrated that the N-terminal ST3Gal-II domain containing the cytosolic, transmembrane and stem region (amino acids 1-51) is able to drive a protein reporter out of the endoplasmic reticulum and to retain it in the Golgi complex. This suggests that the C-terminal domain of ST3Gal-II depends on N-glycosylation to attain an optimum conformation for proper exit from the endoplasmic reticulum, but it does not represent an absolute requirement for Golgi complex retention of the enzyme. Fil: Ruggiero, Fernando Miguel. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina Fil: Vilcaes, Aldo 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina Fil: Iglesias Bartolome, Ramiro. National Institutes of Health; Estados Unidos Fil: Daniotti, Jose Luis. 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 Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina |
description |
ST3Gal-II, a type II transmembrane protein, is the main mammalian sialyltransferase responsible for GD1a and GT1b ganglioside biosynthesis in brain. It contains two putative N-glycosylation sites (Asn92 and Asn211). Whereas Asn92 is only conserved in mammalian species, Asn211 is highly conserved in mammals, birds and fish. The present study explores the occupancy and relevance for intracellular trafficking and enzyme activity of these potential N-glycosylations in human ST3Gal-II. We found that ST3Gal-II distributes along the Golgi complex, mainly in proximal compartments. By pharmacological, biochemical and site-directed mutagenesis, we observed that ST3Gal-II is mostly N-glycosylated at Asn211 and that this co-translational modification is critical for its exit from the endoplasmic reticulum and proper Golgi localization. The individual N-glycosylation sites had different effects on ST3Gal-II enzymatic activity. Whereas the N-glycan at position Asn211 seems to negatively influence the activity of the enzyme using both glycolipid and glycoprotein as acceptor substrates, the single N-glycan mutant at Asn92 had only a moderate effect. Lastly, we demonstrated that the N-terminal ST3Gal-II domain containing the cytosolic, transmembrane and stem region (amino acids 1-51) is able to drive a protein reporter out of the endoplasmic reticulum and to retain it in the Golgi complex. This suggests that the C-terminal domain of ST3Gal-II depends on N-glycosylation to attain an optimum conformation for proper exit from the endoplasmic reticulum, but it does not represent an absolute requirement for Golgi complex retention of the enzyme. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07 |
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/11336/50863 Ruggiero, Fernando Miguel; Vilcaes, Aldo Alejandro; Iglesias Bartolome, Ramiro; Daniotti, Jose Luis; Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II; Portland Press; Biochemical Journal; 469; 1; 7-2015; 83-95 0264-6021 1470-8728 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/50863 |
identifier_str_mv |
Ruggiero, Fernando Miguel; Vilcaes, Aldo Alejandro; Iglesias Bartolome, Ramiro; Daniotti, Jose Luis; Critical role of evolutionarily conserved glycosylation at Asn211in the intracellular trafficking and activity of sialyltransferase ST3Gal-II; Portland Press; Biochemical Journal; 469; 1; 7-2015; 83-95 0264-6021 1470-8728 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.biochemj.org/content/469/1/83 info:eu-repo/semantics/altIdentifier/doi/10.1042/BJ20150072 |
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 |
dc.publisher.none.fl_str_mv |
Portland Press |
publisher.none.fl_str_mv |
Portland Press |
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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1842269643390058496 |
score |
13.13397 |