The nucleotide sequences defining the signal peptides of the galactose-binding protein and the arabinose-binding protein.

The nucleotide sequences of the NH2-terminal regions of the mglB (galactose-binding protein) and the araF (arabinose-binding protein) genes have been determined. A "signal peptide" containing 23 amino acid residues immediately precedes the known sequence of the processed galactose-binding protein. The primary sequence of the signal peptide of the arabinose-binding protein has been redefined according to the established nucleotide sequence. The nucleotide sequences for the two signal peptides are preceded by apparent ribosome-binding sequences.