Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein
- Autores
- Ahn, Jinwoo; Poyurowsky, Masha V.; Baptiste, Nicole; Beckerman, Rachel; Cain, Christine; Mattia, Melissa; McKinney, Kristine; Zhou, Jianmin; Zupnick, Andrew; Gottifredi, Vanesa; Prives, Carol
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Both sequence-specific DNA binding and exonuclease activities have been mapped to the central conserved core domain of p53. To gain more information about these two activities a series of mutants were generated that changed core domain histidine residues. Of these mutants, only one, H115N p53, showed markedly reduced exonuclease activity (ca. 15% of wild-type). Surprisingly, purified H115N p53 protein was found to be significantly more potent than wild-type p53 in binding to DNA by several criteria including gel mobility shift assay, filter binding and DNase I footprinting. Interestingly as well, non-specific DNA binding by the core domain of H115N p53 is superior to that of wild-type p53. To study H115N p53 in vivo, clones of H1299 cells expressing tetracycline regulated wild-type or H115N p53 were generated. H115N was both more potent than wild-type p53 in inducing p53 target genes such as p21 and PIG3 and was also more effective in arresting cells in G1. Unexpectedly, in contrast to wild-type p53, H115N p53 was markedly impaired in causing apoptosis when cells were subjected to DNA damage. Our results indicate that the exonuclease activity and transcriptional activation functions of p53 can be separated. They also extend previous findings showing that cell cycle arrest and apoptosis are separable functions of p53. Finally, these experiments confirm that DNA binding and xonuclease activities are distinct features of the p53 core domain.
Fil: Ahn, Jinwoo. University Of Pittsburgh; Estados Unidos
Fil: Poyurowsky, Masha V.. Columbia University; Estados Unidos
Fil: Baptiste, Nicole. Columbia University; Estados Unidos
Fil: Beckerman, Rachel. Columbia University; Estados Unidos
Fil: Cain, Christine. Columbia University; Estados Unidos
Fil: Mattia, Melissa. Mount Sinai School of Medicine; Estados Unidos
Fil: McKinney, Kristine. Harvard Medical School; Estados Unidos
Fil: Zhou, Jianmin. Columbia University; Estados Unidos
Fil: Zupnick, Andrew. Columbia University; Estados Unidos
Fil: Gottifredi, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina
Fil: Prives, Carol. Columbia University; Estados Unidos - Materia
-
P53
Apoptosis
Exonuclease Activity
Dna Binding - 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:11336/20640
Ver los metadatos del registro completo
id |
CONICETDig_848f8011b87ad51ab25e048219f37fdb |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/20640 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 proteinAhn, JinwooPoyurowsky, Masha V.Baptiste, NicoleBeckerman, RachelCain, ChristineMattia, MelissaMcKinney, KristineZhou, JianminZupnick, AndrewGottifredi, VanesaPrives, CarolP53ApoptosisExonuclease ActivityDna Bindinghttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Both sequence-specific DNA binding and exonuclease activities have been mapped to the central conserved core domain of p53. To gain more information about these two activities a series of mutants were generated that changed core domain histidine residues. Of these mutants, only one, H115N p53, showed markedly reduced exonuclease activity (ca. 15% of wild-type). Surprisingly, purified H115N p53 protein was found to be significantly more potent than wild-type p53 in binding to DNA by several criteria including gel mobility shift assay, filter binding and DNase I footprinting. Interestingly as well, non-specific DNA binding by the core domain of H115N p53 is superior to that of wild-type p53. To study H115N p53 in vivo, clones of H1299 cells expressing tetracycline regulated wild-type or H115N p53 were generated. H115N was both more potent than wild-type p53 in inducing p53 target genes such as p21 and PIG3 and was also more effective in arresting cells in G1. Unexpectedly, in contrast to wild-type p53, H115N p53 was markedly impaired in causing apoptosis when cells were subjected to DNA damage. Our results indicate that the exonuclease activity and transcriptional activation functions of p53 can be separated. They also extend previous findings showing that cell cycle arrest and apoptosis are separable functions of p53. Finally, these experiments confirm that DNA binding and xonuclease activities are distinct features of the p53 core domain.Fil: Ahn, Jinwoo. University Of Pittsburgh; Estados UnidosFil: Poyurowsky, Masha V.. Columbia University; Estados UnidosFil: Baptiste, Nicole. Columbia University; Estados UnidosFil: Beckerman, Rachel. Columbia University; Estados UnidosFil: Cain, Christine. Columbia University; Estados UnidosFil: Mattia, Melissa. Mount Sinai School of Medicine; Estados UnidosFil: McKinney, Kristine. Harvard Medical School; Estados UnidosFil: Zhou, Jianmin. Columbia University; Estados UnidosFil: Zupnick, Andrew. Columbia University; Estados UnidosFil: Gottifredi, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; ArgentinaFil: Prives, Carol. Columbia University; Estados UnidosLandes Bioscience2009-05info: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/11336/20640Ahn, Jinwoo; Poyurowsky, Masha V.; Baptiste, Nicole; Beckerman, Rachel; Cain, Christine; et al.; Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein; Landes Bioscience; Cell Cycle; 8; 10; 5-2009; 1603-16151538-41011551-4005CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.4161/cc.8.10.8548info:eu-repo/semantics/altIdentifier/doi/10.4161/cc.8.10.8548info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:03Zoai:ri.conicet.gov.ar:11336/20640instacron: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 09:36:04.248CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
title |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
spellingShingle |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein Ahn, Jinwoo P53 Apoptosis Exonuclease Activity Dna Binding |
title_short |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
title_full |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
title_fullStr |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
title_full_unstemmed |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
title_sort |
Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein |
dc.creator.none.fl_str_mv |
Ahn, Jinwoo Poyurowsky, Masha V. Baptiste, Nicole Beckerman, Rachel Cain, Christine Mattia, Melissa McKinney, Kristine Zhou, Jianmin Zupnick, Andrew Gottifredi, Vanesa Prives, Carol |
author |
Ahn, Jinwoo |
author_facet |
Ahn, Jinwoo Poyurowsky, Masha V. Baptiste, Nicole Beckerman, Rachel Cain, Christine Mattia, Melissa McKinney, Kristine Zhou, Jianmin Zupnick, Andrew Gottifredi, Vanesa Prives, Carol |
author_role |
author |
author2 |
Poyurowsky, Masha V. Baptiste, Nicole Beckerman, Rachel Cain, Christine Mattia, Melissa McKinney, Kristine Zhou, Jianmin Zupnick, Andrew Gottifredi, Vanesa Prives, Carol |
author2_role |
author author author author author author author author author author |
dc.subject.none.fl_str_mv |
P53 Apoptosis Exonuclease Activity Dna Binding |
topic |
P53 Apoptosis Exonuclease Activity Dna Binding |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Both sequence-specific DNA binding and exonuclease activities have been mapped to the central conserved core domain of p53. To gain more information about these two activities a series of mutants were generated that changed core domain histidine residues. Of these mutants, only one, H115N p53, showed markedly reduced exonuclease activity (ca. 15% of wild-type). Surprisingly, purified H115N p53 protein was found to be significantly more potent than wild-type p53 in binding to DNA by several criteria including gel mobility shift assay, filter binding and DNase I footprinting. Interestingly as well, non-specific DNA binding by the core domain of H115N p53 is superior to that of wild-type p53. To study H115N p53 in vivo, clones of H1299 cells expressing tetracycline regulated wild-type or H115N p53 were generated. H115N was both more potent than wild-type p53 in inducing p53 target genes such as p21 and PIG3 and was also more effective in arresting cells in G1. Unexpectedly, in contrast to wild-type p53, H115N p53 was markedly impaired in causing apoptosis when cells were subjected to DNA damage. Our results indicate that the exonuclease activity and transcriptional activation functions of p53 can be separated. They also extend previous findings showing that cell cycle arrest and apoptosis are separable functions of p53. Finally, these experiments confirm that DNA binding and xonuclease activities are distinct features of the p53 core domain. Fil: Ahn, Jinwoo. University Of Pittsburgh; Estados Unidos Fil: Poyurowsky, Masha V.. Columbia University; Estados Unidos Fil: Baptiste, Nicole. Columbia University; Estados Unidos Fil: Beckerman, Rachel. Columbia University; Estados Unidos Fil: Cain, Christine. Columbia University; Estados Unidos Fil: Mattia, Melissa. Mount Sinai School of Medicine; Estados Unidos Fil: McKinney, Kristine. Harvard Medical School; Estados Unidos Fil: Zhou, Jianmin. Columbia University; Estados Unidos Fil: Zupnick, Andrew. Columbia University; Estados Unidos Fil: Gottifredi, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina Fil: Prives, Carol. Columbia University; Estados Unidos |
description |
Both sequence-specific DNA binding and exonuclease activities have been mapped to the central conserved core domain of p53. To gain more information about these two activities a series of mutants were generated that changed core domain histidine residues. Of these mutants, only one, H115N p53, showed markedly reduced exonuclease activity (ca. 15% of wild-type). Surprisingly, purified H115N p53 protein was found to be significantly more potent than wild-type p53 in binding to DNA by several criteria including gel mobility shift assay, filter binding and DNase I footprinting. Interestingly as well, non-specific DNA binding by the core domain of H115N p53 is superior to that of wild-type p53. To study H115N p53 in vivo, clones of H1299 cells expressing tetracycline regulated wild-type or H115N p53 were generated. H115N was both more potent than wild-type p53 in inducing p53 target genes such as p21 and PIG3 and was also more effective in arresting cells in G1. Unexpectedly, in contrast to wild-type p53, H115N p53 was markedly impaired in causing apoptosis when cells were subjected to DNA damage. Our results indicate that the exonuclease activity and transcriptional activation functions of p53 can be separated. They also extend previous findings showing that cell cycle arrest and apoptosis are separable functions of p53. Finally, these experiments confirm that DNA binding and xonuclease activities are distinct features of the p53 core domain. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-05 |
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/11336/20640 Ahn, Jinwoo; Poyurowsky, Masha V.; Baptiste, Nicole; Beckerman, Rachel; Cain, Christine; et al.; Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein; Landes Bioscience; Cell Cycle; 8; 10; 5-2009; 1603-1615 1538-4101 1551-4005 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/20640 |
identifier_str_mv |
Ahn, Jinwoo; Poyurowsky, Masha V.; Baptiste, Nicole; Beckerman, Rachel; Cain, Christine; et al.; Dissection of the sequence-specific DNA binding and exonuclease activities reveals a superactive yet apoptotically impaired mutant p53 protein; Landes Bioscience; Cell Cycle; 8; 10; 5-2009; 1603-1615 1538-4101 1551-4005 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.tandfonline.com/doi/abs/10.4161/cc.8.10.8548 info:eu-repo/semantics/altIdentifier/doi/10.4161/cc.8.10.8548 |
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 |
Landes Bioscience |
publisher.none.fl_str_mv |
Landes Bioscience |
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 |
_version_ |
1844613128246001664 |
score |
13.070432 |