SECISaln, a web-based tool for the creation of structure-based alignments of eukaryotic SECIS elements

Area of Science:

• Molecular Biology
• Genomics
• Bioinformatics

Background:

• Selenoproteins incorporate the 21st amino acid, selenocysteine, via a UGA codon recoding mechanism.
• This recoding relies on a specific RNA structure, the SECIS element, in the 3' untranslated region of selenoprotein mRNAs.
• Previous limitations in sequence data hindered comprehensive analysis of SECIS element conservation.

Purpose of the Study:

• To develop a tool for structure-based sequence alignment of SECIS elements.
• To enhance the understanding of SECIS secondary structure and identify conserved nucleotide positions.
• To provide a valuable resource for researchers in the selenoprotein and RNA fields.

Main Methods:

• Development of the web-based tool SECISaln.
• Utilizing the defined secondary structure of SECIS RNA for alignment.
• Leveraging an expanded dataset of eukaryotic selenoprotein mRNA sequences.

Main Results:

• SECISaln provides the first extensive, structure-based sequence alignment of SECIS elements.
• The tool facilitates improved knowledge of SECIS secondary structure.
• Novel conserved nucleotide positions within SECIS elements have been identified.

Conclusions:

• SECISaln is a powerful new tool for the selenoprotein and RNA research communities.
• The tool aids in the discovery of conserved elements within SECIS structures.
• This work advances the study of selenoprotein biosynthesis and regulation.