Protein
Carboxynorspermidine/carboxyspermidine decarboxylase
Organism
Vibrio vulnificus (strain CMCP6)
Function
Catalyzes the decarboxylation of carboxynorspermidine and carboxyspermidine. Carboxynorspermidine is decarboxylated 20-fold more efficiently than carboxyspermidine. Exhibits some activity with L-ornithine, but shows no activity with L-arginine, L-lysine or meso-diaminopimelate.
Similarity
Belongs to the Orn/Lys/Arg decarboxylase class-II family. NspC subfamily.
Sequence
MNKEQLKTPFFMIDEAKLIQNLEIAKQLKEISGVKLVLALKCFSTWGVFDIIKPYLDGTTSSGPFEVKLGYEKFGGETHAYSVGYSEDDVREVADLCDKIIFNSQSQLAAHRHIVEGKASIGLRLNPGVSYASQDLANPARQFSRLGVQADHIDPAVFDSINGVMFHMNCENKDVDAFIALLDSISERFGAYLNKLDWVSMGGGVFFTWPGYDVEKLGLALKAFSEKHGVQMYLEPGEAIITKTTDLVVTVVDLVENGMKTAIVDSATEAHRLDTLIYKEPASVLEASENGEHEYVIGSCSCLAGDQFCVAKFDQPLHVGQRLHILDSAGYTMVKLNWFNGLKMPSVYCERTNGEIQKLNEFGYEDFKRSLSLWSVQ