Nicotinamide N-methyltransferase

Details

Name
Nicotinamide N-methyltransferase
Kind
protein
Synonyms
  • 2.1.1.1
Gene Name
NNMT
UniProtKB Entry
P40261Swiss-Prot
Organism
Humans
NCBI Taxonomy ID
9606
Amino acid sequence
>lcl|BSEQ0010552|Nicotinamide N-methyltransferase
MESGFTSKDTYLSHFNPRDYLEKYYKFGSRHSAESQILKHLLKNLFKIFCLDGVKGDLLI
DIGSGPTIYQLLSACESFKEIVVTDYSDQNLQELEKWLKKEPEAFDWSPVVTYVCDLEGN
RVKGPEKEEKLRQAVKQVLKCDVTQSQPLGAVPLPPADCVLSTLCLDAACPDLPTYCRAL
RNLGSLLKPGGFLVIMDALKSSYYMIGEQKFSSLPLGREAVEAAVKEAGYTIEWFEVISQ
SYSSTMANNEGLFSLVARKLSRPL
Number of residues
264
Molecular Weight
29573.705
Theoretical pI
5.45
GO Classification
Functions
pyridine N-methyltransferase activity
Processes
animal organ regeneration / NAD biosynthesis via nicotinamide riboside salvage pathway / nicotinamide metabolic process / positive regulation of gluconeogenesis / positive regulation of protein deacetylation / response to xenobiotic stimulus
General Function
Catalyzes the N-methylation of nicotinamide using the universal methyl donor S-adenosyl-L-methionine to form N1-methylnicotinamide and S-adenosyl-L-homocysteine, a predominant nicotinamide/vitamin B3 clearance pathway (PubMed:21823666, PubMed:23455543, PubMed:8182091). Plays a central role in regulating cellular methylation potential, by consuming S-adenosyl-L-methionine and limiting its availability for other methyltransferases. Actively mediates genome-wide epigenetic and transcriptional changes through hypomethylation of repressive chromatin marks, such as H3K27me3 (PubMed:23455543, PubMed:26571212, PubMed:31043742). In a developmental context, contributes to low levels of the repressive histone marks that characterize pluripotent embryonic stem cell pre-implantation state (PubMed:26571212). Acts as a metabolic regulator primarily on white adipose tissue energy expenditure as well as hepatic gluconeogenesis and cholesterol biosynthesis. In white adipocytes, regulates polyamine flux by consuming S-adenosyl-L-methionine which provides for propylamine group in polyamine biosynthesis, whereas by consuming nicotinamide controls NAD(+) levels through the salvage pathway (By similarity). Via its product N1-methylnicotinamide regulates protein acetylation in hepatocytes, by repressing the ubiquitination and increasing the stability of SIRT1 deacetylase (By similarity). Can also N-methylate other pyridines structurally related to nicotinamide and play a role in xenobiotic detoxification (PubMed:30044909)
Specific Function
nicotinamide N-methyltransferase activity
Pfam Domain Function
Signal Regions
Not Available
Transmembrane Regions
Not Available
Cellular Location
Cytoplasm
Gene sequence
>lcl|BSEQ0010553|Nicotinamide N-methyltransferase (NNMT)
ATGGAATCAGGCTTCACCTCCAAGGACACCTATCTAAGCCATTTTAACCCTCGGGATTAC
CTAGAAAAATATTACAAGTTTGGTTCTAGGCACTCTGCAGAAAGCCAGATTCTTAAGCAC
CTTCTGAAAAATCTTTTCAAGATATTCTGCCTAGACGGTGTGAAGGGAGACCTGCTGATT
GACATCGGCTCTGGCCCCACTATCTATCAGCTCCTCTCTGCTTGTGAATCCTTTAAGGAG
ATCGTCGTCACTGACTACTCAGACCAGAACCTGCAGGAGCTGGAGAAGTGGCTGAAGAAA
GAGCCAGAGGCCTTTGACTGGTCCCCAGTGGTGACCTATGTGTGTGATCTTGAAGGGAAC
AGAGTCAAGGGTCCAGAGAAGGAGGAGAAGTTGAGACAGGCGGTCAAGCAGGTGCTGAAG
TGTGATGTGACTCAGAGCCAGCCACTGGGGGCCGTCCCCTTACCCCCGGCTGACTGCGTG
CTCAGCACACTGTGTCTGGATGCCGCCTGCCCAGACCTCCCCACCTACTGCAGGGCGCTC
AGGAACCTCGGCAGCCTACTGAAGCCAGGGGGCTTCCTGGTGATCATGGATGCGCTCAAG
AGCAGCTACTACATGATTGGTGAGCAGAAGTTCTCCAGCCTCCCCCTGGGCCGGGAGGCA
GTAGAGGCTGCTGTGAAAGAGGCTGGCTACACAATCGAATGGTTTGAGGTGATCTCGCAA
AGTTATTCTTCCACCATGGCCAACAACGAAGGACTTTTCTCCCTGGTGGCGAGGAAGCTG
AGCAGACCCCTGTGA
Chromosome Location
11
Locus
11q23.2
External Identifiers
ResourceLink
UniProtKB IDP40261
UniProtKB Entry NameNNMT_HUMAN
GenBank Protein ID494989
GenBank Gene IDU08021
GeneCard IDNNMT
GenAtlas IDNNMT
HGNC IDHGNC:7861
PDB ID(s)2IIP, 3ROD, 5YJF, 6CHH, 6ORR, 6PVE, 6PVS, 7BKG, 7BLE, 7EGU, 7EHZ, 7EI2, 7ET7, 7EU5, 7NBJ, 7NBM, 7NBQ, 7RKK, 7RKL, 7SOK, 7WMC, 7WMT
KEGG IDhsa:4837
IUPHAR/Guide To Pharmacology ID3205
NCBI Gene ID4837
General References
  1. Aksoy S, Szumlanski CL, Weinshilboum RM: Human liver nicotinamide N-methyltransferase. cDNA cloning, expression, and biochemical characterization. J Biol Chem. 1994 May 20;269(20):14835-40. [Article]
  2. Aksoy S, Brandriff BF, Ward A, Little PF, Weinshilboum RM: Human nicotinamide N-methyltransferase gene: molecular cloning, structural characterization and chromosomal localization. Genomics. 1995 Oct 10;29(3):555-61. [Article]
  3. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [Article]
  4. Hubbard MJ, McHugh NJ: Human ERp29: isolation, primary structural characterisation and two-dimensional gel mapping. Electrophoresis. 2000 Nov;21(17):3785-96. [Article]
  5. Choudhary C, Kumar C, Gnad F, Nielsen ML, Rehman M, Walther TC, Olsen JV, Mann M: Lysine acetylation targets protein complexes and co-regulates major cellular functions. Science. 2009 Aug 14;325(5942):834-40. doi: 10.1126/science.1175371. Epub 2009 Jul 16. [Article]
  6. Burkard TR, Planyavsky M, Kaupe I, Breitwieser FP, Burckstummer T, Bennett KL, Superti-Furga G, Colinge J: Initial characterization of the human central proteome. BMC Syst Biol. 2011 Jan 26;5:17. doi: 10.1186/1752-0509-5-17. [Article]
  7. Bian Y, Song C, Cheng K, Dong M, Wang F, Huang J, Sun D, Wang L, Ye M, Zou H: An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome. J Proteomics. 2014 Jan 16;96:253-62. doi: 10.1016/j.jprot.2013.11.014. Epub 2013 Nov 22. [Article]

Associated Data

Drug Relations
DrugDrug groupPharmacological action?TypeActionsDetails
Niacinapproved, investigational, nutraceuticalyestargetbinderDetails