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Distribution of adenylyl cyclase and guanylyl cyclase in rat tissues
Other Title(s)
توزيعات إنزيمات أيض النيوكليوتيدات الحلقية في أنسجة الجرذ
Joint Authors
Bakr, Wadiah Salih
Khan, Jalal al-Din
Source
Journal of King Abdulaziz University : Sciences
Issue
Vol. 15, Issue 1 (31 Dec. 2003), pp.115-128, 14 p.
Publisher
King Abdulaziz University Scientific Publishing Center
Publication Date
2003-12-31
Country of Publication
Saudi Arabia
No. of Pages
14
Main Subjects
Abstract EN
The specific activities of adenylyl and guanylyl cyclases, the cAMP and cGMP phosphodiesterase of rat kidney, liver, heart and brain were examined.
Of all tissues, kidney has the highest adenylyl cyclase specific activities by mean (± SD) of (145 ± 14 pmol/min/mg protein) followed by that of heart (113 ± 21 pmol/min/mg protein), brain (101 ± 8 pmol/min/mg protein) and liver (92 ± 9 pmol/min/mg protein).
The specific activity of particulate guanylyl cyclase was the highest in liver (26 ± 1 nmol/min/mg protein), but the soluble form predominated in kidney (40 ± 2 nmol/min/mg protein).
In contrast to the other tissues examined, brain showed relatively high cAMP and cGMP phosphodiesterase activities.
The kinetic properties of the adenylyl cyclases and cAMP phosphodiesterases were also investigated.
The optimum pH for both types of activity was found to be at 7.4.
Subcellular fractionation of the kidney to locate adenylyl cyclase activity revealed that both the mitochondrial and the microsomal fractions had higher specific activities than that of the nuclear fraction.
Studies on the tissue distribution of cyclic nucleotide PDE activity as well as adenylyl and guanylyl cyclase showed that it is widely distributed in intra and extracellular and they have an important role in signal and nucleotide transdaction.
American Psychological Association (APA)
Khan, Jalal al-Din& Bakr, Wadiah Salih. 2003. Distribution of adenylyl cyclase and guanylyl cyclase in rat tissues. Journal of King Abdulaziz University : Sciences،Vol. 15, no. 1, pp.115-128.
https://search.emarefa.net/detail/BIM-367594
Modern Language Association (MLA)
Khan, Jalal al-Din& Bakr, Wadiah Salih. Distribution of adenylyl cyclase and guanylyl cyclase in rat tissues. Journal of King Abdulaziz University : Sciences Vol. 15, no. 1 (Dec. 2003), pp.115-128.
https://search.emarefa.net/detail/BIM-367594
American Medical Association (AMA)
Khan, Jalal al-Din& Bakr, Wadiah Salih. Distribution of adenylyl cyclase and guanylyl cyclase in rat tissues. Journal of King Abdulaziz University : Sciences. 2003. Vol. 15, no. 1, pp.115-128.
https://search.emarefa.net/detail/BIM-367594
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 127
Record ID
BIM-367594