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Leader peptide SpeFL SpeFL is a small protein (arrest peptide) encoded upstream of inducible ornithine carboxylase gene (speF) that controls expression of downstream genes (speF and patE) by nascent chain-translational arrest and transcriptional attenuation. Ornithine capture by a translating ribosome controls bacterial polyamine synthesis, inducing the expression of ornithine decarboxylase SpeF4, in a mechanism involving ribosome stalling and transcription antitermination |
Jiyao W et al.(2023). "The conserved domain database in 2023.",