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  • 1
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    Control of fusion pore dynamics during exocytosis by Munc18 (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-07
    Description: Intracellular membrane fusion is mediated by the SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins. All vesicle transport steps also have an essential requirement for a member of the Sec1 protein family, including the neuronal Munc18-1 (also known as nSec1) in regulated exocytosis. Here, in adrenal chromaffin cells, we expressed a Munc18 mutant with reduced affinity for syntaxin, which specifically modified the kinetics of single-granule exocytotic release events, consistent with an acceleration of fusion pore expansion. Thus, Munc18 functions in a late stage in the fusion process, where its dissociation from syntaxin determines the kinetics of postfusion events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, R J -- Pevsner, J -- Burgoyne, R D -- R01 NS36670-01A1/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Feb 2;291(5505):875-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Physiological Laboratory, University of Liverpool, Crown Street, Liverpool, L69 3BX, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11157167" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Adrenal Medulla/cytology ; Animals ; Antigens, Surface/metabolism ; Catecholamines/secretion ; Cattle ; Cells, Cultured ; Chromaffin Cells/*physiology ; *Exocytosis ; *Membrane Fusion ; Munc18 Proteins ; Mutation ; Nerve Tissue Proteins/genetics/*metabolism ; PC12 Cells ; Phosphorylation ; Rats ; Secretory Vesicles/*physiology ; Syntaxin 1 ; Transfection ; *Vesicular Transport Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Molecular cloning of odorant-binding protein: member of a ligand carrier family (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-15
    Description: Odorant-binding protein (OBP) is found in nasal epithelium, and it selectively binds odorants. Three complementary DNAs encoding rat odorant-binding protein have now been cloned and sequenced. One clone contains an open reading frame predicted to encode an 18,091-dalton protein. RNA blot analysis confirms the localization of OBP messenger RNA in the nasal epithelium. This OBP has 33 percent amino acid identity to alpha 2-microglobulin, a secreted plasma protein. Other members of an alpha 2-microglobulin superfamily bind and transport hydrophobic ligands. Thus, OBP probably binds and carries odorants within the nasal epithelium to putative olfactory receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pevsner, J -- Reed, R R -- Feinstein, P G -- Snyder, S H -- DA-00074/DA/NIDA NIH HHS/ -- GM-07626/GM/NIGMS NIH HHS/ -- P01 CA16519-13/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1988 Jul 15;241(4863):336-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3388043" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/*genetics ; Cloning, Molecular ; Ligands ; Membrane Proteins/*genetics ; Molecular Sequence Data ; Nasal Mucosa/*physiology ; Rats ; *Receptors, Odorant ; Smell/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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