Cell Binding Peptide P 15
Mostrando 13-24 de 44 artigos, teses e dissertações.
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13. Human Immunodeficiency Virus Type 1 Envelope Epitope-Specific CD4+ T Lymphocytes in Simian/Human Immunodeficiency Virus-Infected and Vaccinated Rhesus Monkeys Detected Using a Peptide-Major Histocompatibility Complex Class II Tetramer
A tetrameric recombinant major histocompatibility complex (MHC) class II-peptide complex was used to quantitate human immunodeficiency virus type 1 (HIV-1) envelope (Env)-specific CD4+ T cells in vaccinated and in simian/human immunodeficiency virus (SHIV)-infected rhesus monkeys. A rhesus monkey MHC class II DR molecule, Mamu-DR*W201, and an HIV-1 Env pepti
American Society for Microbiology.
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14. Fibronectin Facilitates Mycobacterium tuberculosis Attachment to Murine Alveolar Macrophages
Mycobacterium tuberculosis remains a major cause of pulmonary infection worldwide. Attachment of M. tuberculosis organisms to alveolar macrophages (AMs) represents the earliest phase of primary infection in pulmonary tuberculosis. In this study fibronectin (Fn), an adhesive protein, is shown to bind M. tuberculosis organisms and facilitates attachment of M.
American Society for Microbiology.
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15. Red blood cells are a sink for interleukin 8, a leukocyte chemotaxin.
IL-8 (also known as neutrophil-activating peptide 1) is recognized as a potent effector of neutrophil functions. Several different cell types that contact blood, namely T lymphocytes, monocytes, and endothelial cells, secrete this polypeptide following stimulation by cytokines, or lipopolysaccharide. Here we show that when IL-8 is added to blood it rapidly p
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16. Phosphorylation of p53: a Novel Pathway for p53 Inactivation in Human T-Cell Lymphotropic Virus Type 1-Transformed Cells
Inhibition of p53 function, through either mutation or interaction with viral or cellular transforming proteins, correlates strongly with the oncogenic potential. Only a small percentage of human T-cell lymphotropic virus type 1 (HTLV-1)-transformed cells carry p53 mutations, and mutated p53 genes have been found in only one-fourth of adult T-cell leukemia c
American Society for Microbiology.
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17. Glucagon-like peptide-1 is a physiological incretin in rat.
Glucagon-like peptide-1 7-36 amide (GLP-1) has been postulated to be the primary hormonal mediator of the entero-insular axis but evidence has been indirect. The discovery of exendin (9-39), a GLP-1 receptor antagonist, allowed this to be further investigated. The IC50 for GLP-1 receptor binding, using RIN 5AH beta-cell membranes, was found to be 0.36 nmol/l
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18. DNA damage induces phosphorylation of the amino terminus of p53
Data are presented demonstrating that DNA damage leads to specific post-translational modifications of p53 protein. Using two-dimensional peptide mapping of in vivo radiolabeled p53 tryptic phosphopeptides, recombinant truncated p53 protein, and synthetic p53 tryptic peptides, a unique p53 phosphopeptide was identified after exposure of ML-1 cells to ionizin
Cold Spring Harbor Laboratory Press.
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19. CD45 specifically modulates binding of Lck to a phosphopeptide encompassing the negative regulatory tyrosine of Lck.
CD45 is a tyrosine phosphatase expressed in all hematopoietic cells which is important for signal transduction through the T cell antigen receptor (TCR). Studies using CD45-deficient cells have revealed that Lck, a tyrosine kinase thought to be essential for TCR signaling, is hyperphosphorylated on Y505 in the absence of CD45. This site of tyrosine phosphory
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20. Differential phosphorylation of vertebrate p34cdc2 kinase at the G1/S and G2/M transitions of the cell cycle: identification of major phosphorylation sites.
The cdc2 kinase is a key regulator of the eukaryotic cell cycle. The activity of its catalytic subunit, p34cdc2, is controlled by cell cycle dependent interactions with other proteins as well as by phosphorylation--dephosphorylation reactions. In this paper, we examine the phosphorylation state of chicken p34cdc2 at various stages of the cell cycle. By pepti
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21. Heptad Repeat 2-Based Peptides Inhibit Avian Sarcoma and Leukosis Virus Subgroup A Infection and Identify a Fusion Intermediate
Fusion proteins of enveloped viruses categorized as class I are typified by two distinct heptad repeat domains within the transmembrane subunit. These repeats are important structural elements that assemble into the six-helix bundles characteristic of the fusion-activated envelope trimer. Peptides derived from these domains can be potent and specific inhibit
American Society for Microbiology.
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22. Identification of a nonameric H-2Kk-restricted CD8+ cytotoxic T lymphocyte epitope on the Plasmodium falciparum circumsporozoite protein.
Class I-restricted CD8+ cytotoxic T lymphocytes (CTL) against the circumsporozoite protein (CSP) protect mice against the rodent malaria parasite, Plasmodium yoelii, and vaccines designed to produce protective CTL against the P. falciparum CSP (PfCSP) are under development. Humans and B10.BR (H-2k) mice have been shown to have CD8+ CTL activity against a 23-
American Society for Microbiology (ASM).
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23. High-affinity receptors for peptides of the bombesin family in Swiss 3T3 cells.
Gastrin-releasing peptide (GRP) labeled with 125I at tyrosine-15 (125I-GRP) binds to intact quiescent Swiss 3T3 cells in a specific and saturable manner. Scatchard analysis indicates the presence of a single class of high-affinity binding sites of Kd = 0.5 X 10(-9) M and a value for the number of sites per cell of about 100,000. 125I-GRP binding was not inhi
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24. Measles virus modulates human T-cell somatostatin receptors and their coupling to adenylyl cyclase.
The possible role of immunomodulatory peptide somatostatin (SRIF) in measles virus (MV)-induced immunopathology was addressed by analysis of SRIF receptors and their coupling to adenylyl cyclase in mitogen-stimulated Jurkat T cells and human peripheral blood mononuclear cells (PBMC). SRIF-specific receptors were assayed in semipurified membrane preparations