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M C Vandermeers-Piret A Vandermeers P Gourlet M H Ali M Waelbroeck P Robberecht 《European journal of biochemistry》2000,267(14):4556-4560
Six forms of helospectin (a vasoactive intestinal peptide analogue) were purified from the venom of the Heloderma horridum lizard. Their identification was performed by combining sequencing by automated Edman degradation and electrospray mass spectrometry analysis on the complete peptides and their tryptic fragments. The products resulting from the action of an O-glycosidase were also analysed. Two forms were identified as the previously named Hs1 and Hs2 of 38 and 37 amino-acid residues, respectively. Two forms corresponded to Hs1 and Hs2 O-glycosylated by a N-acetylhexosamine-hexose motif attached to the Ser32 residue. Two other forms were not completely characterized but might correspond to the O-glycosylated forms bearing a phosphate or a sulfate group. The glycosylation did not affect the capacity of the helospectins to recognize and to activate the human and the rat VPAC1 and VPAC2 receptors. 相似文献
137.
Lt. Col. Joseph F. Metzger MC USA Alice Kase B.S. Chauncey W. Smith USAF MSC 《Mycopathologia》1962,17(4):335-344
Summary A method is presented for the preparation of immune sera and detection by immunofluorescence ofC. immitis, S. schenckii, B. dermatitidis, C. neoformans, andC. albicans in surgical and autopsy material. Formalin fixation does not affect the antigens of the mycotic agents. There are no cross reactions except withC. immitis andC. neoformans, which can be differentiated by the site of the specific fluorescence in each organism. 相似文献
138.
EDC3 phosphorylation regulates growth and invasion through controlling P‐body formation and dynamics
Jeremiah J Bearss Sathish KR Padi Neha Singh Marina CardoVila Jin H Song Ghassan Mouneimne Nikita Fernandes Yang Li Matthew R Harter Jaime MC Gard Anne E Cress Wolfgang Peti Andrew DL Nelson J Ross Buchan Andrew S Kraft Koichi Okumura 《EMBO reports》2021,22(4)
Regulation of mRNA stability and translation plays a critical role in determining protein abundance within cells. Processing bodies (P‐bodies) are critical regulators of these processes. Here, we report that the Pim1 and 3 protein kinases bind to the P‐body protein enhancer of mRNA decapping 3 (EDC3) and phosphorylate EDC3 on serine (S)161, thereby modifying P‐body assembly. EDC3 phosphorylation is highly elevated in many tumor types, is reduced upon treatment of cells with kinase inhibitors, and blocks the localization of EDC3 to P‐bodies. Prostate cancer cells harboring an EDC3 S161A mutation show markedly decreased growth, migration, and invasion in tissue culture and in xenograft models. Consistent with these phenotypic changes, the expression of integrin β1 and α6 mRNA and protein is reduced in these mutated cells. These results demonstrate that EDC3 phosphorylation regulates multiple cancer‐relevant functions and suggest that modulation of P‐body activity may represent a new paradigm for cancer treatment. 相似文献