Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins.

Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Research Abstract Details 

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Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Abstract Text:

F Koch-Nolte,F Haag,R Braren,M ,J Hoovers,S Balasubramanian,F Bazan,H G Thiele,

Mono-ADP-ribosylation is one of the posttranslational protein modifications regulating cellular metabolism, e.g., nitrogen fixation, in prokaryotes. Several bacterial toxins mono-ADP-ribosylate and inactivate specific proteins in their animal hosts. Recently, two mammalian GPI-anchored cell surface enzymes with similar activities were cloned (designated ART1 and ART2). We have now identified six related expressed sequence tags (ESTs) in the public database and cloned the two novel human genes from which these are derived (designated ART3 and ART4). The deduced amino acid sequences of the predicted gene products show 28% sequence identity to one another and 32-41% identity vs the muscle and T cell enzymes. They contain signal peptide sequences characteristic of GPI anchorage. Southern Zoo blot analyses suggest the presence of related genes in other mammalian species. By PCR screening of somatic cell hybrids and by in situ hybridization, we have mapped the two genes to human chromosomes 4p14-p15.1 and 12q13.2-q13.3. Northern blot analyses show that these genes are specifically expressed in testis and spleen, respectively. Comparison of genomic and cDNA sequences reveals a conserved exon/intron structure, with an unusually large exon encoding the predicted mature membrane proteins. Secondary structure prediction analyses indicate conserved motifs and amino acid residues consistent with a common ancestry of this emerging mammalian enzyme family and bacterial mono(ADP-ribosyl)transferases. It is possible that the four human gene family members identified so far represent the "tip of an iceberg," i.e., a larger family of enzymes that influences the function of target proteins via mono-ADP-ribosylation.

Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Publishing Authors By Initials

F Koch-Nolte,F Haag,R Braren,M ,J Hoovers,S Balasubramanian,F Bazan,HG Thiele,

For similar urogenital system: genitalia: genitalia, male: testis research abstracts see: urogenital system: genitalia: genitalia, male: testis research

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Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Genomics

VOLUME: 39

Page Numbers: 370-6

Journal Abbreviation: Genomics

ISSN: 0888-7543

DAY: 1

MONTH: Feb

YEAR: 1997

Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8800135

Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Keywords Mesh Terms:

KEYWORDS: Testis

MESH TERMS: metabolism

Chemical & Substance for Abstract: Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins. Information

Substance Name: ART4 protein, human

Registry Number: EC 2.4.2.-

Grant and Affiliation Information for Two novel human members of an emerging mammalian gene family related to mono-ADP-ribosylating bacterial toxins.

AFFILIATION: Department of Immunology, University Hospital, Hamburg, Federal Republic of Germany. nolte@uke.uni-hamburg.de

Country: UNITED STATES

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MEDLINETA: Genomics

REFSOURCE: Genomics 1999 Jan 1;55(1):130

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ACCESSION NUMBER: X95827

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