87549-52-8 Ala-pro-arg-leu-arg-phe-tyr-ser-leu Alanyl-prolyl-arginyl-leucyl-arginyl-phenylalanyl-tyrosyl-seryl-leucine alpha-Bag cell peptide alpha-Bag cell peptide (Aplysia californica) alpha-Bcp alpha-Bcp(1-9)