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[2] [10] The specifier sequence is the first recognition sequence in the leader. [7] It is complementary to the anticodon of the tRNA that is a substrate of the tRNA synthetase under regulation. [7] The second tRNA binding sequence, the T box sequence, is complementary to the nucleotide preceding the acceptor end of the tRNA. [7]
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The 5′ untranslated region (also known as 5′ UTR, leader sequence, transcript leader, or leader RNA) is the region of a messenger RNA (mRNA) that is directly upstream from the initiation codon. This region is important for the regulation of translation of a transcript by differing mechanisms in viruses , prokaryotes and eukaryotes .
Download as PDF; Printable version; In other projects ... move to sidebar hide. Leader sequence may refer to: Leader sequence (mRNA), a sequence of mRNA; Leading ...
Cas9 (or "CRISPR-associated protein 9") is an enzyme that uses CRISPR sequences as a guide to recognize and open up specific strands of DNA that are complementary to the CRISPR sequence. Cas9 enzymes together with CRISPR sequences form the basis of a technology known as CRISPR-Cas9 that can be used to edit genes within living organisms.
The target sequence is 20 bases long as part of each CRISPR locus in the crRNA array. [58] A typical crRNA array has multiple unique target sequences. Cas9 proteins select the correct location on the host's genome by utilizing the sequence to bond with base pairs on the host DNA.
PAM and size of various CRISPR DNA nucleases . The canonical PAM is the sequence 5'-NGG-3', where "N" is any nucleobase followed by two guanine ("G") nucleobases. [9] Guide RNAs can transport Cas9 to any locus in the genome for gene editing, but no editing can occur at any site other than one at which Cas9 recognizes PAM.
The output is the predicted peptide sequences in the FASTA format, and a definition line that includes the query ID, the translation reading frame and the nucleotide positions where the coding region begins and ends. OrfPredictor facilitates the annotation of EST-derived sequences, particularly, for large-scale EST projects.