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Updated: Aug 9, 2026
Combined Nucleotide and Protein Extractions in Caenorhabditis elegans
Published on: March 17, 2019
Expression of the DEAD-box/RNA helicase rck/p54 in mouse tissues: implications for heterogeneous protein expression
Yukihiro Akao1, Yoshihito Nakagawa
1Gifu International Institute of Biotechnology, 1-1 Naka-Fudogaoka, Kakamigahara, Gifu 504-0838, Japan. yakao@giib.or.jp
Abstract:
rck/p54, a DEAD-box RNA helicase, is closely associated with the basic modification of RNA molecules in the process of mRNA transport, RNA decay, and translation initiation. In the current study, Western blot analysis revealed that rck/p54 protein was ubiquitously expressed in mouse tissues. Interestingly, three different-sized rck/p54 proteins were detected by antibodies against mouse rck/p54, and these products were differentially expressed in the tissues. An immunohistochemical study revealed that rck/p54 was strongly expressed in basal cells of the crypt in the gastrointestinal tract and in neuronal bodies of the cerebral cortex, and was localized in epithelial cells of the convoluted tubules of the kidneys, suggesting that the heterogeneous rck/p54 may play pivotal roles in cells committed to become specialized in these tissues.
Insights
The DEAD-box RNA helicase, rck/p54, shows ubiquitous expression in mouse tissues. Differential expression of three rck/p54 protein variants suggests specialized roles in gastrointestinal, neuronal, and kidney cells.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- rck/p54 is a DEAD-box RNA helicase involved in mRNA transport, decay, and translation initiation.
- RNA helicases play crucial roles in cellular processes by modulating RNA structure and function.
Purpose of the Study:
- To investigate the expression patterns and potential roles of rck/p54 protein in mouse tissues.
- To determine if different isoforms of rck/p54 exist and exhibit tissue-specific expression.
Main Methods:
- Western blot analysis to detect rck/p54 protein levels across various mouse tissues.
- Immunohistochemical studies to localize rck/p54 expression within specific cell types and tissues.
Main Results:
- rck/p54 protein was found to be ubiquitously expressed in all examined mouse tissues.
- Three distinct protein variants of rck/p54 were identified, with differential expression observed across tissues.
- Strong rck/p54 expression was noted in basal crypt cells of the gastrointestinal tract, neuronal bodies of the cerebral cortex, and kidney convoluted tubule epithelial cells.
Conclusions:
- The heterogeneous expression of rck/p54 variants suggests specialized functions in different cell types.
- rck/p54 likely plays critical roles in the differentiation and specialized functions of cells within the gastrointestinal tract, brain, and kidneys.
