Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Otilia Zapata"'
A Sustained Increase in Intracellular Ca2+ Is Required for the Acrosome Reaction in Sea Urchin Sperm
Autor:
Alberto Darszon, Otilia Zapata, Harvey M. Florman, Marco T. González-Martínez, Lucia de De La Torre, Blanca E. Galindo, Esmeralda Rodríguez
Publikováno v:
Developmental Biology. 236:220-229
The acrosome reaction (AR), necessary for fertilization in many species, requires an increase in intracellular Ca(2+) ([Ca(2+)](i)). In sea urchin sperm, the AR is triggered by an egg-jelly factor: the associated [Ca(2+)](i) elevation lasts minutes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1de7a7da30ae1128a1f988531a71330
https://doi.org/10.1006/dbio.2001.0323
https://doi.org/10.1006/dbio.2001.0323
Autor:
Ji-Long Chen, Carmen Beltrán, Otilia Zapata, James D. Ralston, Jan B. Parys, Frank J. Longo, Alberto Darszon
Publikováno v:
Scopus-Elsevier
Europe PubMed Central
Europe PubMed Central
SummaryInositol 1,4,5-triphosphate (Ins(1,4,5)P3) is a second messenger that regulates Ca2+channels in many important cell signalling pathways. In sea urchin sperm the outer investment of the egg triggers the acrosome reaction (AR) that involves Ins(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996d1fba9600ba066bd9cded84bff5c3
https://doi.org/10.1017/s0967199400003932
https://doi.org/10.1017/s0967199400003932
Publikováno v:
Biochemistry. 35:7591-7598
Adenylylcyclase (AC) from sea urchin sperm does not appear to be regulated by G proteins [Hildebrandt, J. D., Tash, J. S., Kirchick, H. J., Lipschunits, L., Secra, R. D.,Birmbaumer, L. (1985) Endocrinology 116, 1357-1366]. During sperm activation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf0d552b75a15e2cae009fab7e4b8d66
https://doi.org/10.1021/bi952806v
https://doi.org/10.1021/bi952806v
Publikováno v:
Biochimica et biophysica acta. 1401(3)
Acrosome reaction inactivation (ARI) is a process that renders sperm irreversibly refractory to the egg jelly (the natural inducer of the acrosome reaction, AR). This process triggered by the egg jelly, is associated with an increase in [Ca2+]i. Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51355b116b9cb977ea97a396906563e6
https://pubmed.ncbi.nlm.nih.gov/9540823
https://pubmed.ncbi.nlm.nih.gov/9540823
Autor:
Yolanda Sandoval, Carmen Beltrán, Pedro Labarca, Alberto Darszon, Celia M. Santi, A. Liévano, Otilia Zapata
Publikováno v:
From Ion Channels to Cell-to-Cell Conversations ISBN: 9781489917973
Ion channels are key elements in the activation of respiration and motility, in chemotaxis, and in triggering the acrosome reaction (AR) in sperm (Schackmann, 1989; Ward and Kopf, 1993; Darszon et al., 1994). The small size of these cells (head diame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8eda57333a1812cd971ce2039dd66a15
https://doi.org/10.1007/978-1-4899-1795-9_9
https://doi.org/10.1007/978-1-4899-1795-9_9
Autor:
Lucia de De Latorre, A. Liévano, Irma Vargas, Alberto Darszon, Carmen Beltrán, Otilia Zapata, Celia M. Santi, Pedro Labarca
Publikováno v:
AIP Conference Proceedings.
Ion channels are deeply involved in sea urchin sperm activation, motility, chemotaxis and in the acrosome reaction. Unraveling ion channel function and regulation in sperm behavior has required a combination of complementary approaches since spermato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765f3e7d3c7ccbd76c6c5e9e858e9ae1
https://doi.org/10.1063/1.48825
https://doi.org/10.1063/1.48825
Autor:
Otilia Zapata-Hommer, Oliver Griesbeck
Publikováno v:
BMC Biotechnology. 3:5
Background: The green fluorescent protein (GFP) has been widely used in cell biology as a marker of gene expression, label of cellular structures, fusion tag or as a crucial constituent of genetically encoded biosensors. Mutagenesis of the wildtype g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::552fbfc2f55b2d5fc78f422c38e54e96
https://doi.org/10.1186/1472-6750-3-5
https://doi.org/10.1186/1472-6750-3-5
Publikováno v:
FEBS Letters. (1-2):210-214
Signal transduction initiated by the egg peptide, speract, in sea urchin sperm is not fully understood. Hypotonically swollen sperm are a suitable model to study peptide signal transduction. Ion substitution experiments now indicate (i) that the perm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c739302d7c329a896f5b6ea7df5c2e5
Autor:
Otilia Zapata, Carmen Beltrán, Pedro Labarca, A. Liévano, Alberto Darszon, Celia M. Santi, Ezequiel Morales
Publikováno v:
Developmental Biology. (2):271-280
Ion channels are deeply involved in sperm physiology. In sea urchin sperm cyclic nucleotide levels increase during quimotaxis and in the acrosome reaction (AR). Although cyclic nucleotides are second messengers known to directly or indirectly modulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9207c252b5744728005138da749b7e1