Z-Arg-betaNA · HCl is a protected arginine-derived amino acid derivative featuring an Nα-benzyloxycarbonyl (Z/Cbz) protecting group and a β-naphthylamide (betaNA) functionality associated with the arginine side-chain framework. The molecule is present as a hydrochloride salt, pairing the basic guanidinium side chain with chloride while retaining the protected amino group and a carboxyl group appropriate for further derivatization or coupling chemistry. In peptide and amide synthesis workflows, Z-Arg-betaNA · HCl is used as a stepwise building block or substrate analogue for preparing arginine-containing peptide fragments and for analytical or biochemical assays that employ β-naphthylamide readouts.
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4. Store-operated Ca2+ entry sustains the fertilization Ca2+ signal in pig eggs
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