OptionalreverseReverse the sequence
OptionalcomplementComplement the sequence (A↔T, C↔G)
OptionalreverseReverse complement the sequence
OptionaltoConvert DNA to RNA (T → U)
OptionaltoConvert RNA to DNA (U → T)
OptionalupperConvert sequence to uppercase
OptionallowerConvert sequence to lowercase
OptionalcustomCustom transformation function
Options for transforming sequence content
Transformations modify the sequence string itself.