Abstract
Nicotinamide adenine dinucleotide (NAD+) is synthesized by the action of nicotinamide mononucleotide adenylyltransferase (NMNAT) from NMN and ATP. The mouse homolog of NMNAT-2 (mmNMNAT-2) was cloned, expressed, and subsequently identified using MALDI-TOF in conjunction with the ProFound database. Circular dichroism analyses of recombinant mmNMNAT-2 showed α helical and β sheet secondary structures, consistent with the known structure of the human isoform. Competition experiments using mouse pancreatic tissue lysates with recombinant mmNMNAT-2 demonstrated that the activity of the expressed protein was similar to the human isoform. Immunohistochemistry of mouse embryonic tissues with hNMNAT-2 also showed a tissue- and cellular-specific expression of this isoform. Therefore, our studies demonstrate for the first time the clear biological evidence for the existence of a mouse isoform of hNMNAT-2. These studies may help in future investigations aimed at understanding the regulation of this gene and its pathway, and in turn, will spur the development of novel therapies for diseases such as cancer and diabetes since mice are the most frequently used experimental system for in vivo studies.
Keywords: Circular dichroism, MALDI-TOF, mouse NMNAT-2, tissue expression, NAD, tiazofurin, Nicotinamide adenine dinucleotide, nicotinamide mononucleotide, adenylyltransferase, analyses, human isoform
Medicinal Chemistry
Title: Cloning, Expression and Characterization of Mouse (Mus musculus) Nicotinamide 5-Mononucleotide Adenylyltransferase-2
Volume: 7 Issue: 6
Author(s): David W. Raches, Suhong Xiao, Praveen Kusumanchi, Joel Yalowitz, Paresh Sanghani, Eric C. Long, Asok C. Antony and Hiremagalur N. Jayaram
Affiliation:
Keywords: Circular dichroism, MALDI-TOF, mouse NMNAT-2, tissue expression, NAD, tiazofurin, Nicotinamide adenine dinucleotide, nicotinamide mononucleotide, adenylyltransferase, analyses, human isoform
Abstract: Nicotinamide adenine dinucleotide (NAD+) is synthesized by the action of nicotinamide mononucleotide adenylyltransferase (NMNAT) from NMN and ATP. The mouse homolog of NMNAT-2 (mmNMNAT-2) was cloned, expressed, and subsequently identified using MALDI-TOF in conjunction with the ProFound database. Circular dichroism analyses of recombinant mmNMNAT-2 showed α helical and β sheet secondary structures, consistent with the known structure of the human isoform. Competition experiments using mouse pancreatic tissue lysates with recombinant mmNMNAT-2 demonstrated that the activity of the expressed protein was similar to the human isoform. Immunohistochemistry of mouse embryonic tissues with hNMNAT-2 also showed a tissue- and cellular-specific expression of this isoform. Therefore, our studies demonstrate for the first time the clear biological evidence for the existence of a mouse isoform of hNMNAT-2. These studies may help in future investigations aimed at understanding the regulation of this gene and its pathway, and in turn, will spur the development of novel therapies for diseases such as cancer and diabetes since mice are the most frequently used experimental system for in vivo studies.
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W. Raches David, Xiao Suhong, Kusumanchi Praveen, Yalowitz Joel, Sanghani Paresh, C. Long Eric, C. Antony Asok and N. Jayaram Hiremagalur, Cloning, Expression and Characterization of Mouse (Mus musculus) Nicotinamide 5-Mononucleotide Adenylyltransferase-2, Medicinal Chemistry 2011; 7 (6) . https://dx.doi.org/10.2174/157340611797928262
DOI https://dx.doi.org/10.2174/157340611797928262 |
Print ISSN 1573-4064 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6638 |
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