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Murine α- N -Acetylgalactosaminidase: Isolation and Expression of a Full-Length cDNA and Genomic Organization: Further Evidence of an α-Galactosidase Gene Family

Identifieur interne : 003599 ( Istex/Corpus ); précédent : 003598; suivant : 003600

Murine α- N -Acetylgalactosaminidase: Isolation and Expression of a Full-Length cDNA and Genomic Organization: Further Evidence of an α-Galactosidase Gene Family

Auteurs : Anne M. Wang ; Yiannis A. Ioannou ; Ken M. Zeidner ; Robert J. Desnick

Source :

RBID : ISTEX:73593A7DF89C62869F91B20F5FBF4669A00C7D59

English descriptors

Abstract

Recent characterization of the human sequences encoding two lysosomal hydrolases, α-galactosidase A (α-Gal A) and α-N-acetylgalactosaminidase (α-GalNAc) revealed that these two enzymes with distinct enzymatic activities shared about 50% overall amino acid identity and that their genomic sequences had a conserved common gene structure. These findings suggested that these genes, which are located on different chromosomes, arose by duplication and divergence from a common ancestral gene. To further compare this α-galactosidase gene family, the murine α-GalNAc cDNA and genomic sequences were isolated and characterized. The full-length cDNA contained an open-reading frame of 1245 bp encoding a 415 amino acid polypeptide and had 5′ and 3′ untranslated regions of 94 and 333 bp, respectively. The coding region had 81% nucleotide and 81.9% amino acid identities with those of the corresponding human α-GalNAc sequence. Northern analysis revealed a single transcript of ∼1.9 kb. The functional integrity of the cDNA was demonstrated by transient expression in COS-1 cells. The murine α-GalNAc genomic sequence spanned ∼9 kb and was identical in structure with the human α-GalNAc gene with eight introns interrupting the coding sequence at identical positions. In addition, the deduced amino acid sequence of the murine α-GalNAc gene was highly homologous with α-GalNAc and α-Gal A genes from other species providing further support for a common evolutionary ancestor of the α-galactosidase gene family. The availability of the murine gene will permit additional evolutionary comparisons, structure/function analyses, and the generation of mice with α-GalNAc deficiency by gene targeting.

Url:
DOI: 10.1006/mgme.1998.2750

Links to Exploration step

ISTEX:73593A7DF89C62869F91B20F5FBF4669A00C7D59

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<ce:simple-para>Recent characterization of the human sequences encoding two lysosomal hydrolases, α-galactosidase A (α-Gal A) and α-
<ce:italic>N</ce:italic>
-acetylgalactosaminidase (α-GalNAc) revealed that these two enzymes with distinct enzymatic activities shared about 50% overall amino acid identity and that their genomic sequences had a conserved common gene structure. These findings suggested that these genes, which are located on different chromosomes, arose by duplication and divergence from a common ancestral gene. To further compare this α-galactosidase gene family, the murine α-GalNAc cDNA and genomic sequences were isolated and characterized. The full-length cDNA contained an open-reading frame of 1245 bp encoding a 415 amino acid polypeptide and had 5′ and 3′ untranslated regions of 94 and 333 bp, respectively. The coding region had 81% nucleotide and 81.9% amino acid identities with those of the corresponding human α-GalNAc sequence. Northern analysis revealed a single transcript of ∼1.9 kb. The functional integrity of the cDNA was demonstrated by transient expression in COS-1 cells. The murine α-GalNAc genomic sequence spanned ∼9 kb and was identical in structure with the human α-GalNAc gene with eight introns interrupting the coding sequence at identical positions. In addition, the deduced amino acid sequence of the murine α-GalNAc gene was highly homologous with α-GalNAc and α-Gal A genes from other species providing further support for a common evolutionary ancestor of the α-galactosidase gene family. The availability of the murine gene will permit additional evolutionary comparisons, structure/function analyses, and the generation of mice with α-GalNAc deficiency by gene targeting.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords>
<ce:section-title>Keywords</ce:section-title>
<ce:keyword>
<ce:text>α-
<ce:italic>N</ce:italic>
-acetylgalactosaminidase</ce:text>
</ce:keyword>
<ce:keyword>
<ce:text>α-galactosidase</ce:text>
</ce:keyword>
<ce:keyword>
<ce:text>cloning</ce:text>
</ce:keyword>
<ce:keyword>
<ce:text>gene targeting</ce:text>
</ce:keyword>
<ce:keyword>
<ce:text>Fabry disease</ce:text>
</ce:keyword>
<ce:keyword>
<ce:text>Schindler disease</ce:text>
</ce:keyword>
</ce:keywords>
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<title>Murine α- N -Acetylgalactosaminidase: Isolation and Expression of a Full-Length cDNA and Genomic Organization: Further Evidence of an α-Galactosidase Gene Family</title>
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<titleInfo type="alternative" lang="en" contentType="CDATA">
<title>Murine α-</title>
</titleInfo>
<name type="personal">
<namePart type="given">Anne M.</namePart>
<namePart type="family">Wang</namePart>
<affiliation>Department of Human Genetics, Mount Sinai School of Medicine, New York, New York, 10029</affiliation>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Yiannis A.</namePart>
<namePart type="family">Ioannou</namePart>
<affiliation>Department of Human Genetics, Mount Sinai School of Medicine, New York, New York, 10029</affiliation>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Ken M.</namePart>
<namePart type="family">Zeidner</namePart>
<affiliation>Department of Human Genetics, Mount Sinai School of Medicine, New York, New York, 10029</affiliation>
<role>
<roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Robert J.</namePart>
<namePart type="family">Desnick</namePart>
<affiliation>Department of Human Genetics, Mount Sinai School of Medicine, New York, New York, 10029</affiliation>
<description>To whom correspondence should be addressed at Department of Human Genetics, Mount Sinai School of Medicine, Fifth Avenue at 100th Street, New York, NY 10029. Fax: (212) 360-1809. E-mail:rjdesnick@vaxa.crc.mssm.edu.</description>
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<copyrightDate encoding="w3cdtf">1998</copyrightDate>
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<abstract lang="en">Recent characterization of the human sequences encoding two lysosomal hydrolases, α-galactosidase A (α-Gal A) and α-N-acetylgalactosaminidase (α-GalNAc) revealed that these two enzymes with distinct enzymatic activities shared about 50% overall amino acid identity and that their genomic sequences had a conserved common gene structure. These findings suggested that these genes, which are located on different chromosomes, arose by duplication and divergence from a common ancestral gene. To further compare this α-galactosidase gene family, the murine α-GalNAc cDNA and genomic sequences were isolated and characterized. The full-length cDNA contained an open-reading frame of 1245 bp encoding a 415 amino acid polypeptide and had 5′ and 3′ untranslated regions of 94 and 333 bp, respectively. The coding region had 81% nucleotide and 81.9% amino acid identities with those of the corresponding human α-GalNAc sequence. Northern analysis revealed a single transcript of ∼1.9 kb. The functional integrity of the cDNA was demonstrated by transient expression in COS-1 cells. The murine α-GalNAc genomic sequence spanned ∼9 kb and was identical in structure with the human α-GalNAc gene with eight introns interrupting the coding sequence at identical positions. In addition, the deduced amino acid sequence of the murine α-GalNAc gene was highly homologous with α-GalNAc and α-Gal A genes from other species providing further support for a common evolutionary ancestor of the α-galactosidase gene family. The availability of the murine gene will permit additional evolutionary comparisons, structure/function analyses, and the generation of mice with α-GalNAc deficiency by gene targeting.</abstract>
<note type="content">Section title: Regular Article</note>
<subject lang="en">
<genre>Keywords</genre>
<topic>α-N-acetylgalactosaminidase</topic>
<topic>α-galactosidase</topic>
<topic>cloning</topic>
<topic>gene targeting</topic>
<topic>Fabry disease</topic>
<topic>Schindler disease</topic>
</subject>
<relatedItem type="host">
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<title>Molecular Genetics and Metabolism</title>
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<titleInfo type="abbreviated">
<title>YMGME</title>
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<genre type="journal">journal</genre>
<originInfo>
<dateIssued encoding="w3cdtf">199810</dateIssued>
</originInfo>
<identifier type="ISSN">1096-7192</identifier>
<identifier type="PII">S1096-7192(00)X0036-4</identifier>
<part>
<date>199810</date>
<detail type="volume">
<number>65</number>
<caption>vol.</caption>
</detail>
<detail type="issue">
<number>2</number>
<caption>no.</caption>
</detail>
<extent unit="issue pages">
<start>63</start>
<end>186</end>
</extent>
<extent unit="pages">
<start>165</start>
<end>173</end>
</extent>
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<identifier type="istex">73593A7DF89C62869F91B20F5FBF4669A00C7D59</identifier>
<identifier type="DOI">10.1006/mgme.1998.2750</identifier>
<identifier type="PII">S1096-7192(98)92750-0</identifier>
<accessCondition type="use and reproduction" contentType="copyright">©1998 Academic Press</accessCondition>
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