3.5.1.106 N-formylmaleamic acid + H2O aerobic catabolism of nicotinic acid Pseudomonas putida maleamate + formate - ? 402772 3.5.1.106 N-formylmaleamic acid + H2O S101, D125, and H245 are essential for the enzyme activity, constituting the catalytic triad of the NicD deformylase Pseudomonas putida maleamate + formate - ? 402772