Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication
- Autores
- Merli, Marcelo Luciano; Cirulli, Brenda Analía; Menendez-Bravo, Simón Matías; Cricco, Julia Alejandra
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Trypanosoma cruzi, the causative agent of Chagas disease, presents a complex life cycle and adapts its metabolism to nutrients' availability. Although T. cruzi is an aerobic organism, it does not produce heme. This cofactor is acquired from the host and is distributed and inserted into different heme-proteins such as respiratory complexes in the parasite's mitochondrion. It has been proposed that T. cruzi's energy metabolism relies on a branched respiratory chain with a cytochrome c oxidase-type aa3 (CcO) as the main terminal oxidase. Heme A, the cofactor for all eukaryotic CcO, is synthesized via two sequential enzymatic reactions catalyzed by heme O synthase (HOS) and heme A synthase (HAS). Previously, TcCox10 and TcCo×15 (Trypanosoma cruzi Co×10 and Co×15 proteins) were identified in T. cruzi. They presented HOS and HAS activity, respectively, when they were expressed in yeast. Here, we present the first characterization of TcCox15 in T. cruzi, confirming its role as HAS. It was differentially detected in the different T. cruzi stages, being more abundant in the replicative forms. This regulation could reflect the necessity of more heme A synthesis, and therefore more CcO activity at the replicative stages. Overexpression of a non-functional mutant caused a reduction in heme A content. Moreover, our results clearly showed that this hindrance in the heme A synthesis provoked a reduction on CcO activity and, in consequence, an impairment on T. cruzi survival, proliferation and infectivity. This evidence supports that T. cruzi depends on the respiratory chain activity along its life cycle, being CcO an essential terminal oxidase.
Fil: Merli, Marcelo Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Cirulli, Brenda Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Menendez-Bravo, Simón Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Cricco, Julia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina - Materia
-
TRYPANOSOMA CRUZI
HEME A
CYTOCHROME C OXIDASE
HEME A SYNTHASE - 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:11336/50432
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Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replicationMerli, Marcelo LucianoCirulli, Brenda AnalíaMenendez-Bravo, Simón MatíasCricco, Julia AlejandraTRYPANOSOMA CRUZIHEME ACYTOCHROME C OXIDASEHEME A SYNTHASEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Trypanosoma cruzi, the causative agent of Chagas disease, presents a complex life cycle and adapts its metabolism to nutrients' availability. Although T. cruzi is an aerobic organism, it does not produce heme. This cofactor is acquired from the host and is distributed and inserted into different heme-proteins such as respiratory complexes in the parasite's mitochondrion. It has been proposed that T. cruzi's energy metabolism relies on a branched respiratory chain with a cytochrome c oxidase-type aa3 (CcO) as the main terminal oxidase. Heme A, the cofactor for all eukaryotic CcO, is synthesized via two sequential enzymatic reactions catalyzed by heme O synthase (HOS) and heme A synthase (HAS). Previously, TcCox10 and TcCo×15 (Trypanosoma cruzi Co×10 and Co×15 proteins) were identified in T. cruzi. They presented HOS and HAS activity, respectively, when they were expressed in yeast. Here, we present the first characterization of TcCox15 in T. cruzi, confirming its role as HAS. It was differentially detected in the different T. cruzi stages, being more abundant in the replicative forms. This regulation could reflect the necessity of more heme A synthesis, and therefore more CcO activity at the replicative stages. Overexpression of a non-functional mutant caused a reduction in heme A content. Moreover, our results clearly showed that this hindrance in the heme A synthesis provoked a reduction on CcO activity and, in consequence, an impairment on T. cruzi survival, proliferation and infectivity. This evidence supports that T. cruzi depends on the respiratory chain activity along its life cycle, being CcO an essential terminal oxidase.Fil: Merli, Marcelo Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Cirulli, Brenda Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Menendez-Bravo, Simón Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Cricco, Julia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaPortland Press2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50432Merli, Marcelo Luciano; Cirulli, Brenda Analía; Menendez-Bravo, Simón Matías; Cricco, Julia Alejandra; Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication; Portland Press; Biochemical Journal; 474; 14; 7-2017; 2315-23320264-60211470-8728CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1042/BCJ20170084info:eu-repo/semantics/altIdentifier/url/http://www.biochemj.org/content/474/14/2315info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:56:49Zoai:ri.conicet.gov.ar:11336/50432instacron: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:34982025-09-29 09:56:49.863CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
title |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
spellingShingle |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication Merli, Marcelo Luciano TRYPANOSOMA CRUZI HEME A CYTOCHROME C OXIDASE HEME A SYNTHASE |
title_short |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
title_full |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
title_fullStr |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
title_full_unstemmed |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
title_sort |
Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication |
dc.creator.none.fl_str_mv |
Merli, Marcelo Luciano Cirulli, Brenda Analía Menendez-Bravo, Simón Matías Cricco, Julia Alejandra |
author |
Merli, Marcelo Luciano |
author_facet |
Merli, Marcelo Luciano Cirulli, Brenda Analía Menendez-Bravo, Simón Matías Cricco, Julia Alejandra |
author_role |
author |
author2 |
Cirulli, Brenda Analía Menendez-Bravo, Simón Matías Cricco, Julia Alejandra |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
TRYPANOSOMA CRUZI HEME A CYTOCHROME C OXIDASE HEME A SYNTHASE |
topic |
TRYPANOSOMA CRUZI HEME A CYTOCHROME C OXIDASE HEME A SYNTHASE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Trypanosoma cruzi, the causative agent of Chagas disease, presents a complex life cycle and adapts its metabolism to nutrients' availability. Although T. cruzi is an aerobic organism, it does not produce heme. This cofactor is acquired from the host and is distributed and inserted into different heme-proteins such as respiratory complexes in the parasite's mitochondrion. It has been proposed that T. cruzi's energy metabolism relies on a branched respiratory chain with a cytochrome c oxidase-type aa3 (CcO) as the main terminal oxidase. Heme A, the cofactor for all eukaryotic CcO, is synthesized via two sequential enzymatic reactions catalyzed by heme O synthase (HOS) and heme A synthase (HAS). Previously, TcCox10 and TcCo×15 (Trypanosoma cruzi Co×10 and Co×15 proteins) were identified in T. cruzi. They presented HOS and HAS activity, respectively, when they were expressed in yeast. Here, we present the first characterization of TcCox15 in T. cruzi, confirming its role as HAS. It was differentially detected in the different T. cruzi stages, being more abundant in the replicative forms. This regulation could reflect the necessity of more heme A synthesis, and therefore more CcO activity at the replicative stages. Overexpression of a non-functional mutant caused a reduction in heme A content. Moreover, our results clearly showed that this hindrance in the heme A synthesis provoked a reduction on CcO activity and, in consequence, an impairment on T. cruzi survival, proliferation and infectivity. This evidence supports that T. cruzi depends on the respiratory chain activity along its life cycle, being CcO an essential terminal oxidase. Fil: Merli, Marcelo Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Cirulli, Brenda Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Menendez-Bravo, Simón Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Cricco, Julia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina |
description |
Trypanosoma cruzi, the causative agent of Chagas disease, presents a complex life cycle and adapts its metabolism to nutrients' availability. Although T. cruzi is an aerobic organism, it does not produce heme. This cofactor is acquired from the host and is distributed and inserted into different heme-proteins such as respiratory complexes in the parasite's mitochondrion. It has been proposed that T. cruzi's energy metabolism relies on a branched respiratory chain with a cytochrome c oxidase-type aa3 (CcO) as the main terminal oxidase. Heme A, the cofactor for all eukaryotic CcO, is synthesized via two sequential enzymatic reactions catalyzed by heme O synthase (HOS) and heme A synthase (HAS). Previously, TcCox10 and TcCo×15 (Trypanosoma cruzi Co×10 and Co×15 proteins) were identified in T. cruzi. They presented HOS and HAS activity, respectively, when they were expressed in yeast. Here, we present the first characterization of TcCox15 in T. cruzi, confirming its role as HAS. It was differentially detected in the different T. cruzi stages, being more abundant in the replicative forms. This regulation could reflect the necessity of more heme A synthesis, and therefore more CcO activity at the replicative stages. Overexpression of a non-functional mutant caused a reduction in heme A content. Moreover, our results clearly showed that this hindrance in the heme A synthesis provoked a reduction on CcO activity and, in consequence, an impairment on T. cruzi survival, proliferation and infectivity. This evidence supports that T. cruzi depends on the respiratory chain activity along its life cycle, being CcO an essential terminal oxidase. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07 |
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/11336/50432 Merli, Marcelo Luciano; Cirulli, Brenda Analía; Menendez-Bravo, Simón Matías; Cricco, Julia Alejandra; Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication; Portland Press; Biochemical Journal; 474; 14; 7-2017; 2315-2332 0264-6021 1470-8728 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/50432 |
identifier_str_mv |
Merli, Marcelo Luciano; Cirulli, Brenda Analía; Menendez-Bravo, Simón Matías; Cricco, Julia Alejandra; Heme A synthesis and CcO activity are essential for Trypanosoma cruzi infectivity and replication; Portland Press; Biochemical Journal; 474; 14; 7-2017; 2315-2332 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/doi/10.1042/BCJ20170084 info:eu-repo/semantics/altIdentifier/url/http://www.biochemj.org/content/474/14/2315 |
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 |
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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13.070432 |