ID   NADK2_TRIV2             Reviewed;         305 AA.
AC   Q3MBU3;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   04-APR-2006, sequence version 2.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=NAD kinase 2 {ECO:0000255|HAMAP-Rule:MF_00361};
DE            EC=2.7.1.23 {ECO:0000255|HAMAP-Rule:MF_00361};
DE   AltName: Full=ATP-dependent NAD kinase 2 {ECO:0000255|HAMAP-Rule:MF_00361};
GN   Name=nadK2 {ECO:0000255|HAMAP-Rule:MF_00361}; OrderedLocusNames=Ava_1921;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
CC   -!- FUNCTION: Involved in the regulation of the intracellular balance of
CC       NAD and NADP, and is a key enzyme in the biosynthesis of NADP.
CC       Catalyzes specifically the phosphorylation on 2'-hydroxyl of the
CC       adenosine moiety of NAD to yield NADP. {ECO:0000255|HAMAP-
CC       Rule:MF_00361}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + NAD(+) = ADP + H(+) + NADP(+); Xref=Rhea:RHEA:18629,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:58349, ChEBI:CHEBI:456216; EC=2.7.1.23;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00361};
CC   -!- COFACTOR:
CC       Name=a divalent metal cation; Xref=ChEBI:CHEBI:60240;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00361};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00361}.
CC   -!- SIMILARITY: Belongs to the NAD kinase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00361}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABA21543.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; CP000117; ABA21543.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q3MBU3; -.
DR   SMR; Q3MBU3; -.
DR   STRING; 240292.Ava_1921; -.
DR   EnsemblBacteria; ABA21543; ABA21543; Ava_1921.
DR   KEGG; ava:Ava_1921; -.
DR   eggNOG; COG0061; Bacteria.
DR   HOGENOM; CLU_008831_0_1_3; -.
DR   Proteomes; UP000002533; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0051287; F:NAD binding; IEA:UniProt.
DR   GO; GO:0003951; F:NAD+ kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019674; P:NAD metabolic process; IEA:InterPro.
DR   GO; GO:0006741; P:NADP biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   Gene3D; 2.60.200.30; -; 1.
DR   Gene3D; 3.40.50.10330; -; 1.
DR   HAMAP; MF_00361; NAD_kinase; 1.
DR   InterPro; IPR017438; ATP-NAD_kinase_N.
DR   InterPro; IPR017437; ATP-NAD_kinase_PpnK-typ_C.
DR   InterPro; IPR016064; NAD/diacylglycerol_kinase_sf.
DR   InterPro; IPR002504; NADK.
DR   Pfam; PF01513; NAD_kinase; 1.
DR   SUPFAM; SSF111331; SSF111331; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Kinase; NAD; NADP; Nucleotide-binding; Transferase.
FT   CHAIN           1..305
FT                   /note="NAD kinase 2"
FT                   /id="PRO_0000229596"
FT   ACT_SITE        78
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
FT   BINDING         78..79
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
FT   BINDING         152..153
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
FT   BINDING         182
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
FT   BINDING         193..198
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
FT   BINDING         251
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00361"
SQ   SEQUENCE   305 AA;  32830 MW;  BD8D1B4E5D7958BA CRC64;
     MPKVGIIYND IKPVAGRVAI ELKDKLTTAG WDVSITSSIG GILGYSNPES PVCHTPIDGL
     TPPGFDSEMK FAIVLGGDGT VLAASRQVAP CGIPILAINT GHMGFLTETY LNQLPQAIDQ
     AIAGEYEIEE RAMLTVKVLR GESVLWEALC LNEMVLHREP LTSMCHFEIA VGRHAPVDIA
     ADGVIVSTPT GSTAYSLSAG GPVVTPGVPA LQLVPICPHS LASRALVFPD TEPVNIYPVN
     IPRLVMVVDG NGGCYIFPED RVYLERSPYS VKFIRLQPPE FFRILREKLG WGLPHIAKPT
     SVELP