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Mayoral, J.G.; Nouzova, M.; Yoshiyama, M.; Shinoda, T.; Hernandez-Martinez, S.; Dolghih, E.; Turjanski, A.G.; Roitberg, A.E.; Priestap, H.; Perez, M.; Mackenzie, L.; Li, Y.; Noriega, F.G. "Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes" (2009) Insect Biochemistry and Molecular Biology. 39(1):31-37
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Abstract:

A juvenile hormone acid methyltransferase (JHAMT) was isolated as an abundant EST in a library of the corpora allata of the adult female mosquito Aedes aegypti. Its full length cDNA encodes a 278-aa protein that has 43% amino acid identity with BmJHAMT, a juvenile hormone acid methyltransferase previously cloned from Bombyx mori. Heterologous expression produced a recombinant protein that metabolizes farnesoic acid (FA) into methyl farnesoate, as well as juvenile hormone acid into juvenile hormone III (JH III) with exquisite stereo specificity. Real time PCR experiments showed that JHAMT mRNA levels are not an unequivocal indicator of JH III synthesis rates; the A. aegypti JHAMT gene, silent in female pupae, was transcriptionally activated just 4-6 h before adult eclosion. Radiochemical methyltransferase assays using active and inactive corpora allata glands (CA) dissected from sugar and blood-fed females respectively, clearly indicated that significant levels of JHAMT enzymatic activity are present when the CA shows very low spontaneous rates of JH III synthesis. Having the last enzymes of the JH synthetic pathway readily available all the time might be critical for the adult female mosquito to sustain rapid dynamic changes in JH III synthesis in response to nutritional changes or peripheral influences, such as mating or feeding. These results suggest that this gene has different roles in the regulation of JH synthesis in pupal and adult female mosquitoes, and support the hypothesis that the rate-limiting steps in JH III synthesis in adult female mosquitoes are located before entrance of FA into the synthetic pathway.

Registro:

Documento: Artículo
Título:Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes
Autor:Mayoral, J.G.; Nouzova, M.; Yoshiyama, M.; Shinoda, T.; Hernandez-Martinez, S.; Dolghih, E.; Turjanski, A.G.; Roitberg, A.E.; Priestap, H.; Perez, M.; Mackenzie, L.; Li, Y.; Noriega, F.G.
Filiación:Department of Biological Sciences, Florida International University, Miami, FL, United States
National Institute of Agrobiological Sciences, Tsukuba, Japan
Centro de Investigaciones Sobre Enfermedades Infecciosas, INSP, Cuernavaca, Mexico
Department of Chemistry Quantum Theory Project, University of Florida, Gainesville, FL, United States
Departamento de Química Biológica, Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Buenos Aires, Argentina
Palabras clave:Aedes aegypti; Farnesoic acid; Juvenile hormone; Methyltransferase; Mosquito; insect protein; juvenile hormone; methyltransferase; amino acid sequence; animal; article; chemistry; corpus allatum; enzymology; female; gene expression; genetics; growth, development and aging; metabolism; molecular cloning; molecular genetics; mosquito; sequence alignment; Amino Acid Sequence; Animals; Cloning, Molecular; Corpora Allata; Culicidae; Female; Gene Expression; Insect Proteins; Juvenile Hormones; Methyltransferases; Molecular Sequence Data; Sequence Alignment; Aedes aegypti; Bombyx mori
Año:2009
Volumen:39
Número:1
Página de inicio:31
Página de fin:37
DOI: http://dx.doi.org/10.1016/j.ibmb.2008.09.010
Título revista:Insect Biochemistry and Molecular Biology
Título revista abreviado:Insect Biochem. Mol. Biol.
ISSN:09651748
CODEN:IBMBE
CAS:methyltransferase, 9033-25-4; Insect Proteins; Juvenile Hormones; Methyltransferases, EC 2.1.1.-
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09651748_v39_n1_p31_Mayoral

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Citas:

---------- APA ----------
Mayoral, J.G., Nouzova, M., Yoshiyama, M., Shinoda, T., Hernandez-Martinez, S., Dolghih, E., Turjanski, A.G.,..., Noriega, F.G. (2009) . Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes. Insect Biochemistry and Molecular Biology, 39(1), 31-37.
http://dx.doi.org/10.1016/j.ibmb.2008.09.010
---------- CHICAGO ----------
Mayoral, J.G., Nouzova, M., Yoshiyama, M., Shinoda, T., Hernandez-Martinez, S., Dolghih, E., et al. "Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes" . Insect Biochemistry and Molecular Biology 39, no. 1 (2009) : 31-37.
http://dx.doi.org/10.1016/j.ibmb.2008.09.010
---------- MLA ----------
Mayoral, J.G., Nouzova, M., Yoshiyama, M., Shinoda, T., Hernandez-Martinez, S., Dolghih, E., et al. "Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes" . Insect Biochemistry and Molecular Biology, vol. 39, no. 1, 2009, pp. 31-37.
http://dx.doi.org/10.1016/j.ibmb.2008.09.010
---------- VANCOUVER ----------
Mayoral, J.G., Nouzova, M., Yoshiyama, M., Shinoda, T., Hernandez-Martinez, S., Dolghih, E., et al. Molecular and functional characterization of a juvenile hormone acid methyltransferase expressed in the corpora allata of mosquitoes. Insect Biochem. Mol. Biol. 2009;39(1):31-37.
http://dx.doi.org/10.1016/j.ibmb.2008.09.010