Conidial surface nicotinamide adenine dinucleotide glycohydrolase that cleave NAD(+) and NADP(+) but not their reduced counterparts, NADH and NADPH (PubMed:6260480, PubMed:33712585). Lacks both ADP-ribosyl cyclase and base exchange activity and does not mediate synthesis of calcium messengers cADPR or NAADP (PubMed:33712585). Its function is correlated with aerial hyphae formation and conidiogenesis, but its physiological role is still obscure (PubMed:165174, PubMed:131723). Is able to ADP-ribosylate itself for self-inactivation (PubMed:9787786). H2O + NAD(+) = ADP-D-ribose + H(+) + nicotinamide H2O + NADP(+) = ADP-D-ribose 2'-phosphate + H(+) + nicotinamide Both aliphatic amines and carboxylic acids are able to inhibit non-competitively the catalytic activity (PubMed:9193681). The inhibition depends on the non-polar moiety of the substances (PubMed:9193681). Dioxane also acts as an inhibitor of NADase activity (PubMed:9193681). Auto-ADP-ribosylation acts as a mechanism of self-inactivation by its substrate (PubMed:9787786). Homodimer. Localizes on the surface of conidia. Expression is up-regulated in mycelia grown in a zinc-deficient medium (PubMed:14814150). Expression is strongly induced with the formation of aerial hyphae, accumulates in conidia and decreases very fast as the mature conidia germinate (Ref.3, PubMed:4384627, PubMed:5111767, PubMed:131723). Induced by the presence of proteins in the culture medium (PubMed:6237174). Low concentrations of sucrose or glucose, Casamino acids or some amino acids such as methionine, cysteine, phenylalanine and tryptophan strongly repress the expression (PubMed:6237174). N-glycosylated. Auto-ADP-ribosylated. Does not affect the growth of aerial hyphae, conidiation or conidial germination. Belongs to the fungal surface NADase family.