Guinea pig histamine N-methyltransferase: cDNA cloning and mRNA distribution.
We report here the isolation of histamine N-methyltransferase (HMT) cDNA from the guinea pig brain by the polymerase chain reaction on the basis of nucleotide sequences of rat and human counterparts. Guinea pig HMT consists of 292 amino acids, with homologies of 75.6% and 79.1% to rat and human HMT, respectively. Northern blotting analysis indicated that the 1.6-kb guinea pig HMT transcript was expressed at various levels in different tissues at the following relative abundance: jejunum, brain > lung, spleen, stomach > liver, kidney. HMT mRNA localized throughout the jejunum, and it was mainly expressed in epithelial cells and in Auerbach's plexus.
Kitanaka
J
J
Department of Pharmacology, Hyogo College of Medicine, Nishinomiya, Japan.
Kitanaka
N
N
Tsujimura
T
T
Kakihana
M
M
Terada
N
N
Takemura
M
M
D000595:Amino Acid Sequence; D000818:Animals; D001921:Brain / Q000201:enzymology; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000302:isolation & purification; D004064:Digestive System / Q000166:cytology / Q000201:enzymology; D004847:Epithelial Cells / Q000166:cytology; D005786:Gene Expression Regulation; D006168:Guinea Pigs; D006637:Histamine N-Methyltransferase / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D008168:Lung / Q000201:enzymology; D008297:Male; D008969:Molecular Sequence Data; D009197:Myenteric Plexus / Q000166:cytology; D012333:RNA, Messenger / Q000235:genetics* / Q000378:metabolism; D051381:Rats; D013154:Spleen / Q000201:enzymology
D018076:DNA, Complementary; D012333:RNA, Messenger; D006637:Histamine N-Methyltransferase