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Human chorionic gonadotropin beta subunit (CGB) is a marker of pregnancy as well as trophoblastic and nontrophoblastic tumors. CGB is encoded by a cluster of six genes, of which type II genes (CGB3/9, 5 and 8) have been shown to be upregulated in ...
Grzegorz Walkowiak +2 more
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Human Chorionic Gonadotropin β-Subunit in Human Semen
Archives of Andrology, 1988The level of human seminal chorionic gonadotropin beta-subunit (hCG beta) was determined by radioimmunoassay (RIA). The mean hCG beta level in 34 normal men was 3.7 +/- 1.6 ng/ml, which was much higher than that in serum. The mean hCG beta level for 20 patients with mild oligozoospermia (20-39 x 10(6) sperm/ml) was 2.5 +/- 0.8 ng/ml, that for 34 ...
S, Saito +3 more
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Immunological properties of the β-subunit of human chorionic gonadotropin
Biochemical and Biophysical Research Communications, 1976Abstract The β-subunit of human chorionic gonadotropin (hCG-β) has been modified to a varying degree by the cleavage of the disulfide bonds by reduction with dithioerythritol followed by S-carboxamidomethylation. The resulting derivatives of hCG-β show a preferential loss in their immunological cross-reactivity with human luteinizing hormone (hLH ...
O P, Bahl, M R, Pandian, R D, Ghai
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Contraception, 1976
Abstract Four different derivatives with varying proportions of dinitrophenyl (DNP) groups tagged covalently to β-subunit of HCG (DNP (1) -β-HCG, DNP (3.3) -β-HCG, DNP (6) -β-HCG and DNP (10) -β-HCG) have been prepared. Their immunogenicity as well as the reactivity of antibodies formed in mice, rabbit and rhesus monkey have been studied.
S K, Dubey +3 more
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Abstract Four different derivatives with varying proportions of dinitrophenyl (DNP) groups tagged covalently to β-subunit of HCG (DNP (1) -β-HCG, DNP (3.3) -β-HCG, DNP (6) -β-HCG and DNP (10) -β-HCG) have been prepared. Their immunogenicity as well as the reactivity of antibodies formed in mice, rabbit and rhesus monkey have been studied.
S K, Dubey +3 more
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Fragmentation of the β-Subunit of Human Chorionic Gonadotropin Produced by Choriocarcinoma*
Endocrinology, 1988When human chorionic gonadotropin (hCG) was subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis under reducing conditions with dithiothreitol (DTT), a smaller weight material (CTP'), in addition to the beta-subunit, could be detected by Western blot analysis using antiserum for hCG beta-carboxy-terminal peptide (CTP).
R, Nishimura +5 more
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Mass Spectrometric Characterization of the β-Subunit of Human Chorionic Gonadotropin
Journal of Mass Spectrometry, 1997A high-performance liquid chromatographic/electrospray mass spectrometric (HPLC/MS) technique is described for the characterization of the beta-subunit of the glycopeptide human chorionic gonadotropin (hCG). The beta-subunit of hCG was dissociated from the alpha-subunit using 0.1% trifluoroacetic acid (TFA) and separated by reversed-phase HPLC using a ...
C, Liu, L D, Bowers
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The Expression of the Human Chorionic Gonadotropin Beta Subunit Gene Depends on Negative Control
Cell Biochemistry and Function, 1996AbstractTranscription of the human chorionic gonadotropin (hCG) genes begins in the very early embryo stage and decreases or even disappears in nonplacental tissues. We have studied the regulation of hCG‐beta genes by cell fusion and by the reverse transcription‐polymerase chain reaction (RT‐PCR).
Y H, Chen, T M, Chen, C Y, Hsieh
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Biochemistry, 1984
The beta subunit of human chorionic gonadotropin (hCG) contains at its carboxy terminus an extension of 29 amino acids not found in the beta subunits of the other glycoprotein hormones. This region provides the sites of attachment of four serine-linked oligosaccharide chains.
S R, Lentz +3 more
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The beta subunit of human chorionic gonadotropin (hCG) contains at its carboxy terminus an extension of 29 amino acids not found in the beta subunits of the other glycoprotein hormones. This region provides the sites of attachment of four serine-linked oligosaccharide chains.
S R, Lentz +3 more
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Location of major antigenic sites of the β-subunit of human chorionic gonadotropin
Biochemistry, 1978Purified beta subunit of human chorionic gonadotropin (hCG) was partially reduced with beta-mercaptoethanol, carboxymethylated, and digested with chymotrypsin. The peptides were isolated by high-voltage electrophoresis and paper chromatography. Five major disulfide-containing peptides were isolated, and their location in the parent molecule was ...
N, Swaminathan, G D, Braunstein
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Human chorionic gonadotropin: Amino acid sequence of the α and β subunits
Biochemical and Biophysical Research Communications, 1972Summary The linear amino acid sequences of the α and β subunits of human chorionic gonadotropin have been determined. HCG-α has 92 and HCG-β 139 amino acid residues. There is more homology between HCG-α and ovine LH-α than between HCG-β and ovine LH-β.
O P, Bahl +3 more
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