Aliases for NMNAT2 Gene
- Nicotinamide Nucleotide Adenylyltransferase 2 2 3 5
- Nicotinamide/Nicotinic Acid Mononucleotide Adenylyltransferase 2 3 4
- Nicotinamide Mononucleotide Adenylyltransferase 2 3 4
- Nicotinate-Nucleotide Adenylyltransferase 2 3 4
- NMN/NaMN Adenylyltransferase 2 3 4
- NaMN Adenylyltransferase 2 3 4
- NMN Adenylyltransferase 2 3 4
External Ids for NMNAT2 Gene
Previous HGNC Symbols for NMNAT2 Gene
Previous GeneCards Identifiers for NMNAT2 Gene
This gene product belongs to the nicotinamide mononucleotide adenylyltransferase (NMNAT) enzyme family, members of which catalyze an essential step in NAD (NADP) biosynthetic pathway. Unlike the other human family member, which is localized to the nucleus, and is ubiquitously expressed; this enzyme is cytoplasmic, and is predominantly expressed in the brain. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
GeneCards Summary for NMNAT2 Gene
NMNAT2 (Nicotinamide Nucleotide Adenylyltransferase 2) is a Protein Coding gene. Diseases associated with NMNAT2 include Erythromelalgia and Wallerian Degeneration. Among its related pathways are Metabolism of water-soluble vitamins and cofactors and NAD metabolism. Gene Ontology (GO) annotations related to this gene include nicotinate-nucleotide adenylyltransferase activity and nicotinamide-nucleotide adenylyltransferase activity. An important paralog of this gene is NMNAT3.
UniProtKB/Swiss-Prot Summary for NMNAT2 Gene
Nicotinamide/nicotinate-nucleotide adenylyltransferase that acts as an axon maintenance factor (By similarity). Catalyzes the formation of NAD(+) from nicotinamide mononucleotide (NMN) and ATP (PubMed:16118205, PubMed:17402747). Can also use the deamidated form; nicotinic acid mononucleotide (NaMN) as substrate but with a lower efficiency (PubMed:16118205, PubMed:17402747). Cannot use triazofurin monophosphate (TrMP) as substrate (PubMed:16118205, PubMed:17402747). Also catalyzes the reverse reaction, i.e. the pyrophosphorolytic cleavage of NAD(+) (PubMed:16118205, PubMed:17402747). For the pyrophosphorolytic activity prefers NAD(+), NADH and NaAD as substrates and degrades nicotinic acid adenine dinucleotide phosphate (NHD) less effectively (PubMed:16118205, PubMed:17402747). Fails to cleave phosphorylated dinucleotides NADP(+), NADPH and NaADP(+) (PubMed:16118205, PubMed:17402747). Axon survival factor required for the maintenance of healthy axons: acts by delaying Wallerian axon degeneration, an evolutionarily conserved process that drives the loss of damaged axons (By similarity).