Title |
Distribution of D-3-aminoisobutyrate-pyruvate aminotransferase in the rat brain
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Published in |
BMC Neuroscience, April 2014
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DOI | 10.1186/1471-2202-15-53 |
Pubmed ID | |
Authors |
Masao Abe, Shinichiro Ochi, Yoko Mori, Kiyohiro Yamazaki, Takashi Ishimaru, Yuta Yoshino, Ryuji Fukuhara, Satoshi Tanimukai, Seiji Matsuda, Shu-ichi Ueno |
Abstract |
D-3-aminoisobutyrate, an intermediary product of thymine, is converted to 2-methyl-3-oxopropanoate using pyruvate as an amino acceptor by D-3-aminoisobutyrate-pyruvate aminotransferase (D-AIB AT; EC 2.6.1.40). A large amount of D-AIB AT is distributed in the kidney and liver; however, small amounts are found in the brain. Recently, D-AIB AT was reported to metabolize asymmetric dimethylarginine (ADMA) in vivo and was suggested to be an important enzyme for nitric oxide metabolism because ADMA is a competitive inhibitor for nitric oxide synthase. In this study, we examined the distribution of D-AIB AT in the rat brain further to understand its role. We measured D-AIB AT mRNA and protein expression using quantitative RT-PCR and Western blotting, and monitored its distribution using immunohistochemical staining. |
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