transferase activity, transferring alkyl or aryl (other than methyl) groups beta-pyrazolylalanine synthase activity RHEA:13117 Catalysis of the reaction: O-acetyl-L-serine + pyrazole = 3-(pyrazol-1-yl)-L-alanine + acetate + H+. pyrazolealanine synthase activity pyrazolylalaninase activity 3-O-acetyl-L-serine:pyrazole 1-(2-amino-2-carboxyethyl)transferase activity O(3)-acetyl-L-serine acetate-lyase (adding pyrazole) activity GO:0047458 MetaCyc:2.5.1.51-RXN beta-(1-pyrazolyl)alanine synthase activity beta-pyrazolealanine synthase activity beta-pyrazolylalanine synthase (acetylserine) activity KEGG_REACTION:R03134 EC:2.5.1.51 molecular_function O3-acetyl-L-serine:pyrazole 1-(2-amino-2-carboxyethyl)transferase activity BPA-synthase activity O3-acetyl-L-serine acetate-lyase (adding pyrazole)