FEATURES

FAMILY

DESCRIPTION

Also known as NDKB_HUMAN, NME2, NM23B. Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate (By similarity). Negatively regulates Rho activity by interacting with AKAP13/LBC (PubMed:15249197). Acts as a transcriptional activator of the MYC gene; binds DNA non-specifically (PubMed:8392752, PubMed:19435876). Binds to both single-stranded guanine- and cytosine-rich strands within the nuclease hypersensitive element (NHE) III(1) region of the MYC gene promoter. Does not bind to duplex NHE III(1) (PubMed:19435876). Has G-quadruplex (G4) DNA-binding activity, which is independent of its nucleotide-binding and kinase activity. Binds both folded and unfolded G4 with similar low nanomolar affinities. Stabilizes folded G4s regardless of whether they are prefolded or not (PubMed:25679041). Exhibits histidine protein kinase activity (PubMed:20946858). Hexamer of two different chains: A and B (A6, A5B, A4B2, A3B3, A2B4, AB5, B6) (PubMed:1851158). Interacts with CAPN8 (By similarity). Interacts with AKAP13 (PubMed:15249197). Interacts ITGB1BP1 (via C-terminal domain region) (PubMed:11919189).

EXTERNAL LINKS

NME2

Nucleoside diphosphate kinase B

NME2

Molecular Synopsis