histamine + L-glutamate + ATP <=> N(alpha)-gamma-L-glutamylhistamine + ADP + phosphate + H(+)
histamine + l-glutamate + atp <=> n(alpha)-gamma-l-glutamylhistamine + adp + phosphate + h(+)
histamine + L-glutamate + ATP <=> N(alpha)-gamma-L-glutamylhistamine + ADP + phosphate + H(+)
histamine + l-glutamate + atp <=> n(alpha)-gamma-l-glutamylhistamine + adp + phosphate + h(+)