Mono(ADP-ribosyl)transferases regulate the function of target proteins by attaching ADP-ribose to specific amino acid residues in the proteins. We have characterized the gene for mouse arginine-specific ADP-ribosyltransferase, Art1. Southern blot analyses indicate that Art1 is a single-copy gene. Northern blot and reverse transcription–PCR analyses demonstrate prominent expression of Art1 in cardiac and skeletal muscle, and lower levels in spleen, lung, liver and fetal tissues. While human ART1 is not represented in the public expressed sequence tag (EST) database, the database contains 14 mouse Art1 ESTs. The Art1 gene encompasses four exons spanning 20 kb of genomic DNA. The deduced amino acid sequence of Art1 exhibits the characteristic features of a glycosylphosphatidylinositol-anchored membrane protein. It shows 75–77% sequence identity with its orthologues from the human and rabbit, and 33–34% identity with its paralogues from the mouse, Art2-1 and Art2-2. Separate exons encode the N- and C-terminal signal peptides, and a single long exon encodes the entire predicted native polypeptide chain. We expressed Art1 in 293T cells as a recombinant fusion protein with the Fc portion of human IgG1. This soluble protein exhibits enzyme activities characteristic of arginine-specific ADP-ribosyltransferases. The availability of the Art1 gene provides the basis for applying transgene and knockout technologies to further probe the function of this gene product.
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December 1998
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Research Article|
December 15 1998
Molecular characterization and expression of the gene for mouse NAD+:arginine ecto-mono(ADP-ribosyl)transferase, Art1
Rickmer BRAREN;
Rickmer BRAREN
1Institute for Immunology, University Hospital, Martinistr. 52, D-20246 Hamburg, Germany
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Gustavo GLOWACKI;
Gustavo GLOWACKI
1Institute for Immunology, University Hospital, Martinistr. 52, D-20246 Hamburg, Germany
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Marion NISSEN;
Marion NISSEN
1Institute for Immunology, University Hospital, Martinistr. 52, D-20246 Hamburg, Germany
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Friedrich HAAG;
Friedrich HAAG
1Institute for Immunology, University Hospital, Martinistr. 52, D-20246 Hamburg, Germany
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Friedrich KOCH-NOLTE
Friedrich KOCH-NOLTE
*
1Institute for Immunology, University Hospital, Martinistr. 52, D-20246 Hamburg, Germany
1To whom correspondence should be addressed (e-mail [email protected]).
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Publisher: Portland Press Ltd
Received:
July 22 1998
Revision Received:
September 07 1998
Accepted:
October 07 1998
Online ISSN: 1470-8728
Print ISSN: 0264-6021
The Biochemical Society, London © 1998
1998
Biochem J (1998) 336 (3): 561–568.
Article history
Received:
July 22 1998
Revision Received:
September 07 1998
Accepted:
October 07 1998
Connected Content
A correction has been published:
Molecular characterization and expression of the gene for mouse NAD+:arginine ecto-mono(ADP-ribosyl)transferase, Art1
Citation
Rickmer BRAREN, Gustavo GLOWACKI, Marion NISSEN, Friedrich HAAG, Friedrich KOCH-NOLTE; Molecular characterization and expression of the gene for mouse NAD+:arginine ecto-mono(ADP-ribosyl)transferase, Art1. Biochem J 15 December 1998; 336 (3): 561–568. doi: https://doi.org/10.1042/bj3360561
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