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Biosynthesis and molecular cloning of sulfated glycoprotein 2 secreted by rat Sertoli cells
Abstract
Sulfated glycoprotein 2 (SGP-2) is the major protein secreted by rat Sertoli cells. Pulse-chase labeling shows that SGP-2 is synthesized as a cotranslationally glycosylated 64-kDa precursor that is modified to a negatively charged 73-kDa form before intracellular cleavage to the mature 47- and 34-kDa subunits. A plasmid cDNA library was constructed from immunopurified mRNA, and a recombinant clone containing the entire protein coding sequence of SGP-2 was isolated. The 1857-nucleotide cDNA consists of a 297-nucleotide 5' noncoding segment, a 1341-nucleotide coding segment, and a 219-nucleotide 3' noncoding sequence. The 5' noncoding region contains five ATG codons followed by four short open reading frames. The derived SGP-2 sequence has a molecular weight of 51,379 and contains six potential N-glycosylation sites. Proteolytic processing sites for the preproprotein were determined by amino-terminal sequencing of the isolated SGP-2 subunits. Northern blots show a wide tissue distribution for the 2.0-kb SGP-2 message, and computer sequence analysis indicates a significant relationship between SGP-2 and human apolipoprotein A-I.
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Cites
Kozak, M. (1986) · Cell · doi:10.1016/0092-8674(86)90762-2 · Cited by 4,741
Cited by
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De Silva, H. V., Harmony, J. A. K., Stuart, W. D., Gil, C. M., & Robbins, J. (1990) · Biochemistry · doi:10.1021/bi00474a025 · Cited by 353
May, P. C., Lampert-Etchells, M., Johnson, S. A., Poirier, J., Masters, J. N., & Finch, C. E. (1990) · Neuron · doi:10.1016/0896-6273(90)90342-d · Cited by 339
Distribution of clusterin in Alzheimer brain tissue
McGeer, P. L., Kawamata, T., & Walker, D. G. (1992) · Brain Research · doi:10.1016/0006-8993(92)90071-g · Cited by 212
The Role of Clusterin in Alzheimer’s Disease: Pathways, Pathogenesis, and Therapy
Yu, J.-T., & Tan, L. (2012) · Molecular Neurobiology · doi:10.1007/s12035-012-8237-1 · Cited by 174
SP-40,40 is a constituent of Alzheimer's amyloid
Choi-Miura, N. H., Ihara, Y., Fukuchi, K., Takeda, M., Nakano, Y., Tobe, T., & Tomita, M. (1992) · Acta Neuropathologica · doi:10.1007/bf00296787 · Cited by 158
Metadata
- Authors
- Collard, M. W., & Griswold, M. D.
- Venue
- Biochemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1987-06-16
- Volume
- 26
- Issue
- 12
- Pages
- 3297-3303
- ISSN
- 0006-2960 (ISSN-L)
- 1520-4995
- OpenAlex
- W2048496806
- Cited by
- 330
- References
- 1
- FWCI
- 14.53
- Type
- journal article
- Language
- en
- Open access
- closed
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- Collard, M. W., & Griswold, M. D. (1987). Biosynthesis and molecular cloning of sulfated glycoprotein 2 secreted by rat Sertoli cells. Biochemistry. https://doi.org/10.1021/bi00386a008
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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