Multiple phosphorylation sites in mammalian neurofilament polypeptides.
نویسندگان
چکیده
منابع مشابه
Multiple phosphorylation sites in mammalian neurofilament polypeptides.
The 68,000, 145,000, and 200,000 dalton subunits of neurofilaments from rat spinal cord and brain stem were shown by chemical phosphate analysis to contain about 3, 9, and 22 mol of phosphate/mol of polypeptide, respectively. All three subunits contained phosphoserine while the 145,000 dalton polypeptide also contained phosphothreonine. The high phosphate content of the 200,000 dalton polypepti...
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Neurofilaments in the axons of mammalian spinal cord neurons are extensively cross-linked; consequently, the filaments and their cross-bridges compose a three-dimensional lattice. We have used antibody decoration in situ combined with tissue preparation by the quick-freeze, deep-etch technique to locate three neurofilament polypeptides (195, 145, and 73 Kd) within this lattice. When antibodies ...
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A calcium protease which degrades neurofilaments was first observed in the fan worm Myxicola infundibulum and in the squid Loligo forbesi [l] and subsequently in a mammalian system [2,3]. Many of the polypeptides in Myxicola axoplasm are degradation products of the 160 000 and 150 000 M, polypeptides as has been shown by careful peptide mapping. Moreover, there is a high probability that they r...
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Intermediate filaments (IF) were reconstituted in vitro from bovine neurofilament triplet polypeptides. Neural IF, solubilized in either low salt or 8 M urea solution, assembled into IF when returned to near-physiological solution conditions. The 68,000-dalton component of the triplet, purified to homogeneity by preparative NaDodSO4 electrophoresis, was renatured and reassembled into short (app...
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Monoclonal antibodies (mAbs) to rat neurofilament (NF) proteins NF-L, NF-M, and NF-H were used to examine the developmental programs of NF expression in rat embryos. The ability of these mAbs to recognize differentially phosphorylated states of NF-M and NF-H (Lee et al., 1987, the preceding paper) was exploited in order to examine the temporal and spatial patterns of NF phosphorylation during e...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1982
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)34041-9