נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Cloning from Leishmania major of a developmentally regulated gene, c-lpk2, for the catalytic subunit of the cAMP-dependent protein kinase
Year:
1996
Authors :
עלי, ראדי
;
.
Volume :
77
Co-Authors:
Siman-Tov, M.M., Department of Parasitohgy, Hebrew Univ.-Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
Radi, A., Department of Weed Research, Newe Ya'ar Research Center, Haifa, Israel
Shapira, M., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Jaffe, C.L., Department of Parasitohgy, Hebrew Univ.-Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
Facilitators :
From page:
201
To page:
215
(
Total pages:
15
)
Abstract:
Protein kinases are important in the regulation of cellular processes including growth and differentiation. Using the polymerase chain reaction with oligonucleotide primers derived from conserved regions of cAMP-dependent protein kinases (PKAs), three different DNA fragments were amplified from leishmanial genomic DNA. One fragment was used to isolate a stage specific gene, c-lpk2, from a Leishmania major genomic library. This gene shows high homology to other eukaryotic PKAs, and the open reading frame encodes a 332 amino acid protein with a predicted molecular mass of 38.2 kDa. When aligned with other PKAs the leishmanial enzyme has a unique eight amino acid extension at the carboxy terminus. The c-lpk2 gene is present as a single copy in L. major, L. donovani and L. amazonensis. The 5′-flanking region contains a polypyrimidine rich tract upstream from the predicted ATG start codon. The gene is highly expressed in promastigotes and barely detectable in amastigotes of L. major. Temperature increase was shown to rapidly down-regulate c-lpk2 expression. Transfer of L. amazonensis promastigotes to 35°C resulted in the rapid disappearance of c-lpk2 mRNA (>70% in 1 h), while at 26°C the mRNA was more stable. The strict temperature dependence of mRNA degradation rate suggests that PKA expression is regulated post-transcriptionally.
Note:
Related Files :
Animals
Cyclic AMP
cyclic amp dependent protein kinase
Differentiation
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0166-6851(96)02601-1
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21955
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:48
You may also be interested in
Scientific Publication
Cloning from Leishmania major of a developmentally regulated gene, c-lpk2, for the catalytic subunit of the cAMP-dependent protein kinase
77
Siman-Tov, M.M., Department of Parasitohgy, Hebrew Univ.-Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
Radi, A., Department of Weed Research, Newe Ya'ar Research Center, Haifa, Israel
Shapira, M., Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
Jaffe, C.L., Department of Parasitohgy, Hebrew Univ.-Hadassah Medical School, P.O. Box 12272, Jerusalem 91120, Israel
Cloning from Leishmania major of a developmentally regulated gene, c-lpk2, for the catalytic subunit of the cAMP-dependent protein kinase
Protein kinases are important in the regulation of cellular processes including growth and differentiation. Using the polymerase chain reaction with oligonucleotide primers derived from conserved regions of cAMP-dependent protein kinases (PKAs), three different DNA fragments were amplified from leishmanial genomic DNA. One fragment was used to isolate a stage specific gene, c-lpk2, from a Leishmania major genomic library. This gene shows high homology to other eukaryotic PKAs, and the open reading frame encodes a 332 amino acid protein with a predicted molecular mass of 38.2 kDa. When aligned with other PKAs the leishmanial enzyme has a unique eight amino acid extension at the carboxy terminus. The c-lpk2 gene is present as a single copy in L. major, L. donovani and L. amazonensis. The 5′-flanking region contains a polypyrimidine rich tract upstream from the predicted ATG start codon. The gene is highly expressed in promastigotes and barely detectable in amastigotes of L. major. Temperature increase was shown to rapidly down-regulate c-lpk2 expression. Transfer of L. amazonensis promastigotes to 35°C resulted in the rapid disappearance of c-lpk2 mRNA (>70% in 1 h), while at 26°C the mRNA was more stable. The strict temperature dependence of mRNA degradation rate suggests that PKA expression is regulated post-transcriptionally.
Scientific Publication
You may also be interested in