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Updated: Jul 29, 2026

Generation of Recombinant Human IgG Monoclonal Antibodies from Immortalized Sorted B Cells
Published on: June 5, 2015
Cloning and expression of an immunoglobulin superfamily gene (IGSF1) in Xq25
R Mazzarella1, G Pengue, J Jones
1Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. rich@genetics.wustl.edu
Abstract:
We have isolated a novel full-length cDNA for a gene (IGSF1) located in distal Xq25. This transcript is highly expressed in adult testis and fetal liver but is undetectable in adult liver. A smaller alternate form is highly expressed in adult heart. The gene encodes a protein of 1327 amino acids with several recognizable functional domains. The protein has a putative signal peptide and transmembrane region, 15 potential sites for N-linked glycosylation, and 12 C2-type immunoglobulin (Ig)-like domains. All of the Ig-like domains contain the two conserved cysteine residues that form intradomain disulfide bonds typical of this superfamily. These features are consistent with a possible role for this molecule in cell surface recognition or cell-cell interaction.
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