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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/44201
Ver los metadatos del registro completo
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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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1844613740210683904 |
score |
13.070432 |