In molecular biology, Turnip crinkle virus (TCV) hairpin H4 is an RNA hairpin found at the 3' end of the Turnip crinkle virus (TCV) genome.
[citation needed] The 3' end of the TCV genome contains the hairpin H4, a T-shaped structure (TSS), which contains hairpins 4a, 4b and hairpin 5 and a promoter hairpin.
H4 enhances transcription and translation of the viral genome.
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