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Sayfa 1 itibaren 91 Sonuçlar
Simple, automated, high resolution mass spectrometry method to determine the disulfide bond and glycosylation patterns of a complex protein: subgroup A avian sarcoma and leukosis virus envelope glycoprotein.
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Enveloped viruses must fuse the viral and cellular membranes to enter the cell. Understanding how viral fusion proteins mediate entry will provide valuable information for antiviral intervention to combat associated disease. The avian sarcoma and leukosis virus envelope glycoproteins, trimers
Resveratrol and diallyl disulfide enhance curcumin-induced sarcoma cell apoptosis.
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Malignant tumors of mesenchimal origin such as rhabdomyosarcoma and osteosarcoma are highly aggressive pedriatic malignancies with a poor prognosis. Indeed, the initial response to chemotherapy is followed by chemoresistance. Diallyl disulfide (DADS), resveratrol (RES) and curcumin (CUR) are dietary
Simian sarcoma virus--transformed cells secrete a mitogen identical to platelet-derived growth factor.
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Normal rat kidney (NRK) cells transformed by simian sarcoma virus (SSV) release into the culture medium a biologically active mitogen with properties identical to those of human platelet-derived growth factor (PDGF). Like PDGF, the growth factor derived from SSV-NRK cells was shown to be stable to
The SU and TM envelope protein subunits of bovine leukemia virus are linked by disulfide bonds, both in cells and in virions.
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After the polyprotein precursor of retroviral envelope proteins is proteolytically cleaved, the surface (SU) and transmembrane (TM) subunits remain associated with each other by noncovalent interactions or by disulfide bonds. Disulfide linkages confer a relatively stable association between the SU
SRR-SB3, a disulfide-containing macrolide that inhibits a late stage of the replicative cycle of human immunodeficiency virus.
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From a series of macrocyclic diamides possessing the disulfide linkage, only SRR-SB3, a compound that complexes with zinc, was found to inhibit human immunodeficiency virus type 1 (HIV-1; strain IIIB) replication at a concentration of 1.8 to 6.5 micrograms/ml in MT-4, CEM, and peripheral blood
WR-2721 (amifostine) infusion in patients with Ewing's sarcoma receiving ifosfamide and cyclophosphamide with mesna: drug and thiol levels in plasma and blood cells, a Pediatric Oncology Group study.
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OBJECTIVE
Previous WR-2721 human pharmacokinetic studies were limited to plasma levels in patients receiving platinum-based compounds, and none includes the effects of WR-2721 on endogenous thiols. In the present study (Pediatric Oncology Group study no. 9457), we measured the levels of WR-2721, its
Specific changes in the collagen phenotype of BALB 3T3 cells as a result of transformation by sarcoma viruses or a chemical carcinogen.
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Radioactive proline-labeled procollagen, accumulated during a 3-hr incubation of normal and transformed BALB 3T3 cultures, was treated with pepsin and the resulting collagen components were analyzed by carboxymethyl-cellulose chromatography and sodium dodecyl sulfate/polyacrylamide gel
Mutant FUS induces endoplasmic reticulum stress in amyotrophic lateral sclerosis and interacts with protein disulfide-isomerase.
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Mutations in the gene encoding fused in sarcoma (FUS) are linked to amyotrophic lateral sclerosis (ALS), but the mechanisms by which these mutants trigger neurodegeneration remain unknown. Endoplasmic reticulum (ER) stress is increasingly recognized as an important and early pathway to motor neuron
Structure-antitumor activity relationship of purin-6-yl alkyl disulfides.
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Antitumor activity and toxicity to host of newly synthesized disulfide derivatives of 6-mercaptopurine (6-MP) and 6-thioguanine (6-TG) were examined in murine ascites sarcoma-180 system (total packed cell volume method) by parenteral administration. The compounds tested were 6-alkyl disulfides
Fine-structure analyses of lipid-protein and protein-protein interactions of gag protein p19 of the avian sarcoma and leukemia viruses by cyanogen bromide mapping.
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In avian sarcoma and leukemia viruses, the gag protein p19 functions structurally as a matrix protein, connecting internal components with the viral envelope. We have used a combination of in situ cross-linking and peptide mapping to localize within p19 the regions responsible for two major
Structural and functional characterization of a novel tumor-derived rat galectin-1 having transforming growth factor (TGF) activity: the relationship between intramolecular disulfide bridges and TGF activity.
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Previously we demonstrated that overexpression of a beta-galactoside binding protein, galectin-1, caused the transformation of BALB3T3 fibroblast cells [Yamaoka, K., Ohno, S., Kawasaki, H., and Suzuki, K. (1991) Biochem. Biophys. Res. Commun. 179, 272-279]. We have now studied the structure-function
Identification of nonessential disulfide bonds and altered conformations in the v-sis protein, a homolog of the B chain of platelet-derived growth factor.
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The protein encoded by v-sis, the oncogene of simian sarcoma virus, is homologous to the B chain of platelet-derived growth factor (PDGF). There are eight conserved Cys residues between PDGF-B and the v-sis protein. Both native PDGF and the v-sis protein occur as disulfide-bonded dimers, probably
Highly glycosylated PDGF-like molecule secreted by simian sarcoma virus-transformed cells.
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Antiserum to human platelet-derived growth factor (PDGF) recognized a simian sarcoma virus transformation-specific glycopeptide, now termed gp200sis, thereby establishing an immunological relationship between PDGF and this highly glycosylated molecule. The same antibodies as well as an antiserum
Characterization of a chemically homogeneous tumor antigen from a methylcholanthrene-induced sarcoma, Meth A.
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A tumor antigen isolated from the cytosol of a methylcholanthrene-induced sarcoma (Meth A) has been purified to homogeneity by the criteria of two-dimensional gel analysis and NH2- and COOH-terminal sequencing. The purified antigen has a mol. wt of 82,000 by SDS gel electrophoresis. However, the
The solution structure of the viral binding domain of Tva, the cellular receptor for subgroup A avian leukosis and sarcoma virus.
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The cellular receptor for subgroup A avian leukosis and sarcoma virus (ALSV-A) is Tva, which contains a motif related to repeats in the low density lipoprotein receptor (LDLR) ligand binding repeat (LBr) and which is necessary for viral entry. As observed with LBr repeats of LDLR, the 47 residue LBr
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