Whitening oligopeptide and preparation method thereof

The invention belongs to the technical field of gene engineering, and particularly relates to a whitening oligopeptide and a preparation method thereof. The invention provides a peptide. The amino acid sequence of the peptide comprises a sequence as shown in SEQ ID No.1. The invention also provides a coding polynucleotide of the peptide, a recombinant expression vector containing the polynucleotide, a recombinant host cell containing the recombinant expression vector, a preparation method and application of the peptide, and a product which contains the peptide and has the functions of whitening, inhibiting melanin mother cells or inhibiting melanin generation. The peptide provided by the invention has a sequence similar to that of MSH-alpha, and is good in water solubility and high in stability. The preparation method of the peptide provided by the invention is simple in operation process, can be used for large-scale preparation by utilizing biological fermentation, and has a remarkable cost advantage. The pr