title: Identification of the archaeal NMN adenylytransferase gene.
abstract: Increasing evidence on the importance of fluctuations in NAD+ levels in the living cell is accumulating. Therefore a deeper knowledge on the regulation of coenzyme synthesis and recycling is required. In this context the study of NMN adenylyltransferase (EC 2.7.7.1),. a key enzyme in the NAD+ biosynthetic pathway, assumes a remarkable relevance. We have previously purified to homogeneity and characterized the protein from the thermophilic archaeon Sulfolobus solfataricus. The determination of partial sequence of the S. solfataricus enzyme, together with the recent availability of the genome sequence of the archaeon Methanococcus jannaschii, allowed us, based on sequence similarity, to identify the M. jannaschii NMN adenylyltransferase gene. As far as we know from literature, this is the first report on the NMN adenylyltransferase gene.
authors.affiliation: Istituto di Biochimica, Facoltà di Medicina, Università di Ancona, Italy.
authors.forename: N
authors.initials: N
authors.lastname: Raffaelli
authors.forename: M
authors.initials: M
authors.lastname: Emanuelli
authors.forename: F M
authors.initials: FM
authors.lastname: Pisani
authors.forename: A
authors.initials: A
authors.lastname: Amici
authors.forename: T
authors.initials: T
authors.lastname: Lorenzi
authors.forename: S
authors.initials: S
authors.lastname: Ruggieri
authors.forename: G
authors.initials: G
authors.lastname: Magni
mesh_terms: D000595:Amino Acid Sequence; D004591:Electrophoresis, Polyacrylamide Gel; D008969:Molecular Sequence Data; D009612:Nicotinamide-Nucleotide Adenylyltransferase / Q000235:genetics*; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D016944:Sulfolobus / Q000201:enzymology* / Q000235:genetics*
chemical_list: D009612:Nicotinamide-Nucleotide Adenylyltransferase