Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes

Autores
Wang, Jingling; Niemevz, Fernando; Lad, Latesh; Huang, Liusheng; Alvarez, Diego Ezequiel; Buldain, Graciela Yolanda; Poulos, Thomas L.; Ortiz de Montellano, Paul R.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Human heme oxygenase-1 (hHO-1) catalyzes the O2- dependent oxidation of heme to biliverdin, CO, and free iron. Previous work indicated that electrophilic addition of the terminal oxygen of the ferric hydroperoxo complex to the -meso-carbon gives 5-hydroxyheme. Earlier efforts to block this reaction with a 5-methyl substituent failed, as the reaction still gave biliverdin IX . Surprisingly, a 15-methyl substituent caused exclusive cleavage at the -meso- rather than at the normal, unsubstituted -meso-carbon. No CO was formed in these reactions, but the fragment cleaved from the porphyrin eluded identification. We report here that hHO-1 cleaves 5-phenylheme to biliverdin IX and oxidizes 15- phenylheme at the -meso position to give 10-phenylbiliverdin IX . The fragment extruded in the oxidation of 5-phenylheme is benzoic acid, one oxygen of which comes from O2 and the other from water. The 2.29- and 2.11-Å crystal structures of the hHO-1 complexes with 1- and 15-phenylheme, respectively, show clear electron density for both the 5- and 15-phenyl rings in both molecules of the asymmetric unit. The overall structure of 15-phenylheme-hHO-1 is similar to that of heme-hHO-1 except for small changes in distal residues 141–150 and in the proximal Lys18 and Lys22. In the 5-phenylhemehHO-1 structure, the phenyl-substituted heme occupies the same position as heme in the heme-HO-1 complex but the 5-phenyl substituent disrupts the rigid hydrophobic wall of residues Met34, Phe214, and residues 26–42 near the -meso carbon. The results provide independent support for an electrophilic oxidation mechanism and support a role for stereochemical control of the reaction regiospecificity.
Fil: Wang, Jingling. University of California; Estados Unidos
Fil: Niemevz, Fernando. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Lad, Latesh. University of California; Estados Unidos
Fil: Huang, Liusheng. University of California; Estados Unidos
Fil: Alvarez, Diego Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Buldain, Graciela Yolanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Poulos, Thomas L.. University of California; Estados Unidos
Fil: Ortiz de Montellano, Paul R.. University of California; Estados Unidos
Materia
Heme oxygenase
Oxidizes heme to biliverdin
The rate-limiting enzyme in the heme degradation pathway
Carbon monoxide
Free iron
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/44201

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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Human Heme Oxygenase Oxidation of 5- and 15-PhenylhemesWang, JinglingNiemevz, FernandoLad, LateshHuang, LiushengAlvarez, Diego EzequielBuldain, Graciela YolandaPoulos, Thomas L.Ortiz de Montellano, Paul R.Heme oxygenaseOxidizes heme to biliverdinThe rate-limiting enzyme in the heme degradation pathwayCarbon monoxideFree ironhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Human heme oxygenase-1 (hHO-1) catalyzes the O2- dependent oxidation of heme to biliverdin, CO, and free iron. Previous work indicated that electrophilic addition of the terminal oxygen of the ferric hydroperoxo complex to the -meso-carbon gives 5-hydroxyheme. Earlier efforts to block this reaction with a 5-methyl substituent failed, as the reaction still gave biliverdin IX . Surprisingly, a 15-methyl substituent caused exclusive cleavage at the -meso- rather than at the normal, unsubstituted -meso-carbon. No CO was formed in these reactions, but the fragment cleaved from the porphyrin eluded identification. We report here that hHO-1 cleaves 5-phenylheme to biliverdin IX and oxidizes 15- phenylheme at the -meso position to give 10-phenylbiliverdin IX . The fragment extruded in the oxidation of 5-phenylheme is benzoic acid, one oxygen of which comes from O2 and the other from water. The 2.29- and 2.11-Å crystal structures of the hHO-1 complexes with 1- and 15-phenylheme, respectively, show clear electron density for both the 5- and 15-phenyl rings in both molecules of the asymmetric unit. The overall structure of 15-phenylheme-hHO-1 is similar to that of heme-hHO-1 except for small changes in distal residues 141–150 and in the proximal Lys18 and Lys22. In the 5-phenylhemehHO-1 structure, the phenyl-substituted heme occupies the same position as heme in the heme-HO-1 complex but the 5-phenyl substituent disrupts the rigid hydrophobic wall of residues Met34, Phe214, and residues 26–42 near the -meso carbon. The results provide independent support for an electrophilic oxidation mechanism and support a role for stereochemical control of the reaction regiospecificity.Fil: Wang, Jingling. University of California; Estados UnidosFil: Niemevz, Fernando. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; ArgentinaFil: Lad, Latesh. University of California; Estados UnidosFil: Huang, Liusheng. University of California; Estados UnidosFil: Alvarez, Diego Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; ArgentinaFil: Buldain, Graciela Yolanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; ArgentinaFil: Poulos, Thomas L.. University of California; Estados UnidosFil: Ortiz de Montellano, Paul R.. University of California; Estados UnidosAmerican Society for Biochemistry and Molecular Biology2004-10info: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/11336/44201Wang, Jingling; Niemevz, Fernando; Lad, Latesh; Huang, Liusheng; Alvarez, Diego Ezequiel; et al.; Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes; American Society for Biochemistry and Molecular Biology; Journal of Biological Chemistry (online); 279; 41; 10-2004; 42593-426040021-92581083-351XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.jbc.org/content/279/41/42593info:eu-repo/semantics/altIdentifier/doi/10.1074/jbc.M406346200info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:22Zoai:ri.conicet.gov.ar:11336/44201instacron: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 09:58:22.765CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
title Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
spellingShingle Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
Wang, Jingling
Heme oxygenase
Oxidizes heme to biliverdin
The rate-limiting enzyme in the heme degradation pathway
Carbon monoxide
Free iron
title_short Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
title_full Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
title_fullStr Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
title_full_unstemmed Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
title_sort Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes
dc.creator.none.fl_str_mv Wang, Jingling
Niemevz, Fernando
Lad, Latesh
Huang, Liusheng
Alvarez, Diego Ezequiel
Buldain, Graciela Yolanda
Poulos, Thomas L.
Ortiz de Montellano, Paul R.
author Wang, Jingling
author_facet Wang, Jingling
Niemevz, Fernando
Lad, Latesh
Huang, Liusheng
Alvarez, Diego Ezequiel
Buldain, Graciela Yolanda
Poulos, Thomas L.
Ortiz de Montellano, Paul R.
author_role author
author2 Niemevz, Fernando
Lad, Latesh
Huang, Liusheng
Alvarez, Diego Ezequiel
Buldain, Graciela Yolanda
Poulos, Thomas L.
Ortiz de Montellano, Paul R.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Heme oxygenase
Oxidizes heme to biliverdin
The rate-limiting enzyme in the heme degradation pathway
Carbon monoxide
Free iron
topic Heme oxygenase
Oxidizes heme to biliverdin
The rate-limiting enzyme in the heme degradation pathway
Carbon monoxide
Free iron
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Human heme oxygenase-1 (hHO-1) catalyzes the O2- dependent oxidation of heme to biliverdin, CO, and free iron. Previous work indicated that electrophilic addition of the terminal oxygen of the ferric hydroperoxo complex to the -meso-carbon gives 5-hydroxyheme. Earlier efforts to block this reaction with a 5-methyl substituent failed, as the reaction still gave biliverdin IX . Surprisingly, a 15-methyl substituent caused exclusive cleavage at the -meso- rather than at the normal, unsubstituted -meso-carbon. No CO was formed in these reactions, but the fragment cleaved from the porphyrin eluded identification. We report here that hHO-1 cleaves 5-phenylheme to biliverdin IX and oxidizes 15- phenylheme at the -meso position to give 10-phenylbiliverdin IX . The fragment extruded in the oxidation of 5-phenylheme is benzoic acid, one oxygen of which comes from O2 and the other from water. The 2.29- and 2.11-Å crystal structures of the hHO-1 complexes with 1- and 15-phenylheme, respectively, show clear electron density for both the 5- and 15-phenyl rings in both molecules of the asymmetric unit. The overall structure of 15-phenylheme-hHO-1 is similar to that of heme-hHO-1 except for small changes in distal residues 141–150 and in the proximal Lys18 and Lys22. In the 5-phenylhemehHO-1 structure, the phenyl-substituted heme occupies the same position as heme in the heme-HO-1 complex but the 5-phenyl substituent disrupts the rigid hydrophobic wall of residues Met34, Phe214, and residues 26–42 near the -meso carbon. The results provide independent support for an electrophilic oxidation mechanism and support a role for stereochemical control of the reaction regiospecificity.
Fil: Wang, Jingling. University of California; Estados Unidos
Fil: Niemevz, Fernando. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Lad, Latesh. University of California; Estados Unidos
Fil: Huang, Liusheng. University of California; Estados Unidos
Fil: Alvarez, Diego Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Buldain, Graciela Yolanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina
Fil: Poulos, Thomas L.. University of California; Estados Unidos
Fil: Ortiz de Montellano, Paul R.. University of California; Estados Unidos
description Human heme oxygenase-1 (hHO-1) catalyzes the O2- dependent oxidation of heme to biliverdin, CO, and free iron. Previous work indicated that electrophilic addition of the terminal oxygen of the ferric hydroperoxo complex to the -meso-carbon gives 5-hydroxyheme. Earlier efforts to block this reaction with a 5-methyl substituent failed, as the reaction still gave biliverdin IX . Surprisingly, a 15-methyl substituent caused exclusive cleavage at the -meso- rather than at the normal, unsubstituted -meso-carbon. No CO was formed in these reactions, but the fragment cleaved from the porphyrin eluded identification. We report here that hHO-1 cleaves 5-phenylheme to biliverdin IX and oxidizes 15- phenylheme at the -meso position to give 10-phenylbiliverdin IX . The fragment extruded in the oxidation of 5-phenylheme is benzoic acid, one oxygen of which comes from O2 and the other from water. The 2.29- and 2.11-Å crystal structures of the hHO-1 complexes with 1- and 15-phenylheme, respectively, show clear electron density for both the 5- and 15-phenyl rings in both molecules of the asymmetric unit. The overall structure of 15-phenylheme-hHO-1 is similar to that of heme-hHO-1 except for small changes in distal residues 141–150 and in the proximal Lys18 and Lys22. In the 5-phenylhemehHO-1 structure, the phenyl-substituted heme occupies the same position as heme in the heme-HO-1 complex but the 5-phenyl substituent disrupts the rigid hydrophobic wall of residues Met34, Phe214, and residues 26–42 near the -meso carbon. The results provide independent support for an electrophilic oxidation mechanism and support a role for stereochemical control of the reaction regiospecificity.
publishDate 2004
dc.date.none.fl_str_mv 2004-10
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/11336/44201
Wang, Jingling; Niemevz, Fernando; Lad, Latesh; Huang, Liusheng; Alvarez, Diego Ezequiel; et al.; Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes; American Society for Biochemistry and Molecular Biology; Journal of Biological Chemistry (online); 279; 41; 10-2004; 42593-42604
0021-9258
1083-351X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44201
identifier_str_mv Wang, Jingling; Niemevz, Fernando; Lad, Latesh; Huang, Liusheng; Alvarez, Diego Ezequiel; et al.; Human Heme Oxygenase Oxidation of 5- and 15-Phenylhemes; American Society for Biochemistry and Molecular Biology; Journal of Biological Chemistry (online); 279; 41; 10-2004; 42593-42604
0021-9258
1083-351X
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.jbc.org/content/279/41/42593
info:eu-repo/semantics/altIdentifier/doi/10.1074/jbc.M406346200
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society for Biochemistry and Molecular Biology
publisher.none.fl_str_mv American Society for Biochemistry and Molecular Biology
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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