ribonuclease UK114 (14.5 kD translational inhibitorcprotein, p14.5, UK114 antigen homolog, HRSP12, PSP)
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Function
- endoribonuclease
- inhibition of translation by cleaving mRNA
- inhibits cell-free protein synthesis
- cleaves phosphodiester bonds only in single-stranded RNA
- up-regulated during cellular differentiation
Structure
homotrimer
Compartment
- cytoplasm, nucleus
- mostly cytoplasmic but, in less differentiated cells occasionally nuclear
Expression
- expressed in renal distal tubular epithelial cells, hepatocytes
- weak expression in other tissues