NDLI: Molecular analysis of trkC in the cat visual cortex

Content Provider	Springer Nature Link
Author	Forooghian, Farzin Kojic, Ljubomir Gu, Qiang Wong, Christian A. Prasad, Shiv S.
Copyright Year	2000
Abstract	trkC belongs to the trk family of neurotrophin receptors. Several isoforms of trkC have been cloned to date; a full-length catalytic form containing a tyrosine kinase (TK) domain, three full-length isoforms with amino-acid insertions (14, 25, and 39 amino acids) in the TK domain, and five noncatalytic truncated forms that completely lack the TK domain. These isoforms have been studied in several mammalian species, including the pig, rat, mouse, monkey, and human.In this article we report the cloning and sequencing of five trkC isoforms isolated from 30-d postnatal cat visual cortex. The first isoform corresponded to the previously reported full-length trkC transcript containing the 14 amino-acid insert. To search for the presence of other inserts, reverse transcription polymerase chain reaction (RT-PCR) was performed on 30-d postnatal cat visual cortex mRNA using primers that flank the insertion site in the TK domain. Both the isoform containing the 14 amino-acid insert and the isoform lacking any insertion were present in abundant amounts, whereas the other two insert containing isoforms (TK25 and TK39) were much less abundant. The fifth isoform discovered corresponds to the previously reported truncated transcript. Overall, there is a high degree of identity (89–98%) and homology (97–99%) between the cat trkC nucleotide and amino-acid sequences among all mammals. The extracellular juxtamembrane domain was found to be highly divergent among all mammals that have been studied to date. This divergent region also included a proline deletion in the cat trkC sequence. This is the first report of the cloning, sequencing, and RT-PCR analysis of trkC in cat visual cortex, a system extensively studied using anatomical and physiological approaches.
Starting Page	39
Ending Page	51
Page Count	13
File Format	PDF
ISSN	08958696
Journal	Journal of Molecular Neuroscience
Volume Number	14
Issue Number	1-2
e-ISSN	15591166
Language	English
Publisher	Humana Press
Publisher Date	2000-01-01
Publisher Place	Totowa
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Neurosciences Neurology
Content Type	Text
Resource Type	Article
Subject	Medicine Cellular and Molecular Neuroscience

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