NAD+ kinase

NAD+ kinase (EC 2.7.1.23, NADK) is an enzyme that converts nicotinamide adenine dinucleotide (NAD+) into NADP+ through phosphorylating the NAD+ coenzyme. NADP+ is an essential coenzyme that is reduced to NADPH primarily by the pentose phosphate pathway to provide reducing power in biosynthetic processes such as fatty acid biosynthesis and nucleotide synthesis. The structure of the NADK from the archaean Archaeoglobus fulgidus has been determined.

NAD+ kinase
Ribbon diagram of NAD+ kinase in complex with substrates.
Identifiers
EC no.2.7.1.23
CAS no.9032-66-0
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins
NADK
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesNADK, dJ283E3.1, NAD kinase
External IDsOMIM: 611616 MGI: 2183149 HomoloGene: 49724 GeneCards: NADK
Orthologs
SpeciesHumanMouse
Entrez

65220

192185

Ensembl

ENSG00000008130

ENSMUSG00000029063

UniProt

O95544

P58058

RefSeq (mRNA)

NM_001159637
NM_138671
NM_001355599

RefSeq (protein)

NP_001153109
NP_619612
NP_001342528

Location (UCSC)Chr 1: 1.75 – 1.78 MbChr 4: 155.65 – 155.68 Mb
PubMed search
Wikidata
View/Edit HumanView/Edit Mouse

In humans, the genes NADK and MNADK encode NAD+ kinases localized in cytosol and mitochondria, respectively. Similarly, yeast have both cytosolic and mitochondrial isoforms, and the yeast mitochondrial isoform accepts both NAD+ and NADH as substrates for phosphorylation.

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