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        Murine Nonvolatile Pheromones: Isolation of Exocrine-Gland Secreting Peptide 1

        互联网

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        Our search for a substance recognized by the vomeronasal neurons revealed that the extra-orbital lacrimal gland (ELG) isolated from adult male mice produced the male-specific peptide pheromone exocrine gland-secreting peptide 1 (ESP1). The following protocol reveals how ESP1 may be extracted from the ELG, purified using anion-exchange and reverse-phase high-performance liquid chromatography (HPLC), and analyzed by mass spectrometry. This protocol has been specifically designed for the purification of ESP1, but may be modified to isolate a variety of peptides from the exocrine glands. Peptides purified in this manner may help further define the molecular mechanisms underlying pheromone communication in the vomeronasal system.
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