The 12 members of the ABCA subfamily in humans are known for their ability to transport cholesterol and its derivatives, vitamins, and xenobiotics across biomembranes. Several ABCA genes are causatively linked to inborn diseases, and the role in cancer progression and metastasis is studied intensively. The regulation of translation initiation is implicated as the major mechanism in the processes of post-transcriptional modifications determining final protein levels. In the current bioinformatics study, we mapped the features of the 5' untranslated regions (5'UTR) known to have the potential to regulate translation, such as the length of 5'UTRs, upstream ATG codons, upstream open-reading frames, introns, RNA G-quadruplex-forming sequences, stem loops, and Kozak consensus motifs, in the DNA sequences of all members of the subfamily. Subsequently, the conservation of the features, correlations among them, ribosome profiling data as well as protein levels in normal human tissues were examined. The 5'UTRs of ABCA genes contain above-average numbers of upstream ATGs, open-reading frames and introns, as well as conserved ones, and these elements probably play important biological roles in this subfamily, unlike RG4s. Although we found significant correlations among the features, we did not find any correlation between the numbers of 5'UTR features and protein tissue distribution and expression scores. We showed the existence of single nucleotide variants in relation to the 5'UTR features experimentally in a cohort of 105 breast cancer patients. 5'UTR features presumably prepare a complex playground, in which the other elements such as RNA binding proteins and non-coding RNAs play the major role in the fine-tuning of protein expression.

• Klíčová slova
• 5′ untranslated region, ABC transporters, ABCA subfamily, bioinformatics, cis-acting elements,
• MeSH
• 5' nepřekládaná oblast genetika   MeSH
• ABC transportér, podrodina A klasifikace   genetika   metabolismus   MeSH
• biologický transport genetika   MeSH
• cholesterol metabolismus   MeSH
• introny genetika   MeSH
• jednonukleotidový polymorfismus genetika   MeSH
• lidé MeSH
• multigenová rodina genetika   MeSH
• otevřené čtecí rámce genetika   MeSH
• proteosyntéza genetika   MeSH
• ribozomy genetika   metabolismus   MeSH
• výpočetní biologie MeSH
• xenobiotika metabolismus   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• 5' nepřekládaná oblast MeSH
• ABC transportér, podrodina A MeSH
• cholesterol MeSH
• xenobiotika MeSH