TY - JOUR
T1 - Cloning and expression of the murine gene and chromosomal location of the human gene encoding N-acetylglucosaminyltransferase I
AU - Kumar, Ravindra
AU - Yang, Jing
AU - Eddy, Roger L.
AU - Byers, Mary G.
AU - Shows, Thomas B.
AU - Stanley, Pamela
N1 - Funding Information:
This work was supported by a grant from the National Cancer Institute to P.S. (R37 30645), and grants HGOO333 and HD05196 to T.S. Thanks are extended to Anne Evers for excellent technical assistance, to Robert Larsen for originally providing the F9 cDNA library, to those who supplied materials (see Materials and methods), and to Jamey Marth and Joel and Nancy Shaper for providing manuscripts prior to publication. The DNA Synthesis Facility of the Cancer Center at Albert Einstein synthesized the oligonucleotides. Partial support was provided by the Cancer Center Grant P30 13330 at Albert Einstein.
PY - 1992/8
Y1 - 1992/8
N2 - A mouse cDNA clone previously isolated from an F9 teratocarcinoma cell library and shown to confer N-acetylglucosaminyltransferase I (GlcNAc-TI) activity on Lec1 Chinese hamster ovary (CHO) cell transfectants [Kumar, R., Yang,J., Larsen,R.D. and Stanley,P. (1990) Proc. Nail. Acad Sci. USA, 87, 9948-9952] has been sequenced. The nucleotide and deduced amino acid sequences are highly homologous to previously described human and rabbit GlcNAc-TI cDNAs. A 1250 bp portion of the mouse cDNA encoding all but the first 34 amino acids of the deduced protein sequence was inducibly expressed in Escherichia coli andgave rise to a prominent fusion protein of mol. wt ̃45 kDa whose presence correlated with high levels of GIcNAc TI activity in cell lysates. Probes generated from the cDNA were used to show that the GlcNAc-TI gene is present in a single copy in mammals and that a homologous gene was not detectable (under low-stringency hybridization conditions) in DNA from yeast, sea urchin, Drosophila or Chaenorhabditis elegans. Genomic DNA clones that hybridized to probes generated from the GlcNAc-TI cDNA were isolated from a mouse liver library. Restriction analyses, Southern hybridization and DNA sequence analyses of subcloned genomic DNA fragments and a polymerase chain reaction (PCR) product provided evidence that the coding and 3' untranslated regions of the cDNA reside in a single exon. However, the mouse GlcNAc-TI gene (Mgat-1) includes at least one additional exon 5' of the coding region. Southern analyses of DNA from mouse-human somatic cell hybrids and in situ hybridization were used to locate the human GlcNAc-TI gene (MGAT-1) between positions q31.2 and q31.3 on chromosome 5, a region of chromosome 5 that is syntenic with a region of mouse chromosome 11. Northern analyses of adult mouse tissues revealed two GlcNAc-TI gene transcripts that are differentially expressed in different tissues.
AB - A mouse cDNA clone previously isolated from an F9 teratocarcinoma cell library and shown to confer N-acetylglucosaminyltransferase I (GlcNAc-TI) activity on Lec1 Chinese hamster ovary (CHO) cell transfectants [Kumar, R., Yang,J., Larsen,R.D. and Stanley,P. (1990) Proc. Nail. Acad Sci. USA, 87, 9948-9952] has been sequenced. The nucleotide and deduced amino acid sequences are highly homologous to previously described human and rabbit GlcNAc-TI cDNAs. A 1250 bp portion of the mouse cDNA encoding all but the first 34 amino acids of the deduced protein sequence was inducibly expressed in Escherichia coli andgave rise to a prominent fusion protein of mol. wt ̃45 kDa whose presence correlated with high levels of GIcNAc TI activity in cell lysates. Probes generated from the cDNA were used to show that the GlcNAc-TI gene is present in a single copy in mammals and that a homologous gene was not detectable (under low-stringency hybridization conditions) in DNA from yeast, sea urchin, Drosophila or Chaenorhabditis elegans. Genomic DNA clones that hybridized to probes generated from the GlcNAc-TI cDNA were isolated from a mouse liver library. Restriction analyses, Southern hybridization and DNA sequence analyses of subcloned genomic DNA fragments and a polymerase chain reaction (PCR) product provided evidence that the coding and 3' untranslated regions of the cDNA reside in a single exon. However, the mouse GlcNAc-TI gene (Mgat-1) includes at least one additional exon 5' of the coding region. Southern analyses of DNA from mouse-human somatic cell hybrids and in situ hybridization were used to locate the human GlcNAc-TI gene (MGAT-1) between positions q31.2 and q31.3 on chromosome 5, a region of chromosome 5 that is syntenic with a region of mouse chromosome 11. Northern analyses of adult mouse tissues revealed two GlcNAc-TI gene transcripts that are differentially expressed in different tissues.
KW - Bacterial expression
KW - Chromosomal mapping
KW - Cloned glycosyltransferase
KW - Mouse gene expression
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U2 - 10.1093/glycob/2.4.383
DO - 10.1093/glycob/2.4.383
M3 - Article
C2 - 1421759
AN - SCOPUS:0026713186
SN - 0959-6658
VL - 2
SP - 383
EP - 393
JO - Glycobiology
JF - Glycobiology
IS - 4
ER -