Zobrazeno 1 - 10 of 380 pro vyhledávání: '"C J, Unkefer"'
1
CN- secondary ions form by recombination as demonstrated using multi-isotope mass spectrometry of 13C- and 15N-labeled polyglycine
Autor: Gregory McMahon, C. J. Unkefer, H. Francois Saint-Cyr, Claude Lechene
Publikováno v: Journal of the American Society for Mass Spectrometry. 17(8)
We have studied the mechanism of formation CN− secondary ions under Cs+ primary ion bombardment. We have synthesized 13C and 15N labeled polyglycine samples with the distance between the two labels and the local atomic environment of the 13C label
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca40c4e098c3da51033e368b93e12a9b
https://pubmed.ncbi.nlm.nih.gov/16750387
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2
Relationship of exo-beta-D-galactofuranosidase kinetic parameters to the number of phosphodiesters in Penicillium fellutanum peptidophosphogalactomannan: enzyme purification and kinetics of glycopeptide and galactofuran chain hydrolysis
Autor: B A, Tuekam, Y I, Park, C J, Unkefer, J E, Gander
Publikováno v: Applied and environmental microbiology. 67(10)
Extracellular Penicillium fellutanum exo-beta-D-galactofuranosidase, with a mass of 70 kDa, was purified to apparent homogeneity. The enzyme was used to investigate the influence of phosphodiesters of the peptidophosphogalactomannans pP(2)GM(ii) and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2edd3844d77129e5e8c583d7a60d8d90
https://pubmed.ncbi.nlm.nih.gov/11571168
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3
Akademický článek
Deep Learning‐Driven Exploration of Pyrroloquinoline Quinone Neuroprotective Activity in Alzheimer's Disease.
Autor: Li, Xinuo1 (AUTHOR) xinuo.li@cpu.edu.cn, Sun, Yuan1 (AUTHOR), Zhou, Zheng2 (AUTHOR), Li, Jinran1 (AUTHOR), Liu, Sai1 (AUTHOR), Chen, Long1 (AUTHOR), Shi, Yiting1 (AUTHOR), Wang, Min3 (AUTHOR), Zhu, Zheying4 (AUTHOR) zheying.zhu@nottingham.ac.uk, Wang, Guangji1 (AUTHOR) guangjiwang@hotmail.com, Lu, Qiulun1 (AUTHOR) qiulunlu@cpu.edu.cn
Publikováno v: Advanced Science. May2024, Vol. 11 Issue 18, p1-20. 20p.
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5
13C and 15N nuclear magnetic resonance evidence of the ionization state of substrates bound to bovine dihydrofolate reductase
Autor: B S, Selinsky, M E, Perlman, R E, London, C J, Unkefer, J, Mitchell, R L, Blakley
Publikováno v: Biochemistry. 29(5)
The state of protonation of substrates bound to mammalian dihydrofolate reductase (DHFR) has significance for the mechanism of catalysis. To investigate this, dihydrofolate and dihydropteroyl-pentaglutamate have been synthesized with 15N enrichment a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::e445c48315c2f2f60f792a84d8e78037
https://pubmed.ncbi.nlm.nih.gov/2322563
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6
The 5-O-beta-D-galactofuranosyl-containing peptidophosphogalactomannan of Penicillium charlesii. Characterization of the mannan by 13C NMR spectroscopy
Autor: C J, Unkefer, J E, Gander
Publikováno v: The Journal of biological chemistry. 265(2)
Penicillium charlesii secretes a galactofuranosyl and phosphodiester-containing peptidophosphogalactomannan (pPGM). A linear mannan was prepared from pPGM by treatment with 48% aqueous HF which selectively cleaves galactofuranosyl and phosphodiesters
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::bb7c11fb6ff572332825545b4396c0b9
https://pubmed.ncbi.nlm.nih.gov/2136849
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7
Akademický článek
13C‐depleted algae as food: Permitting background free in‐vivo nuclear magnetic resonance of Daphnia magna at natural abundance.
Autor: Wolff, William W.1 (AUTHOR), Pellizzari, Jacob1 (AUTHOR), Soong, Ronald1 (AUTHOR), Lysak, Daniel H.1 (AUTHOR), Steiner, Katrina1 (AUTHOR), Ronda, Kiera1 (AUTHOR), Costa, Peter1 (AUTHOR), Downey, Katelyn1 (AUTHOR), Moxley‐Paquette, Vincent1 (AUTHOR), Suszczynski, Chris2 (AUTHOR), Boehmer, Steven2 (AUTHOR), Prat, Jacob R.2 (AUTHOR), Simpson, Andre J.1 (AUTHOR) andre.simpson@utoronto.ca
Publikováno v: Magnetic Resonance in Chemistry. Jan2024, Vol. 62 Issue 1, p11-18. 8p.
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9
The biosynthesis of tabtoxinine-beta-lactam. Use of specifically 13C-labeled glucose and 13C NMR spectroscopy to identify its biosynthetic precursors
Autor: Richard D. Durbin, R E London, T F Uchytil, Pat J. Langston-Unkefer, C J Unkefer
Publikováno v: Journal of Biological Chemistry. 262:4994-4999
Tabtoxinine-beta-lactam, an irreversible inhibitor of glutamine synthetase is produced by several pathovars of Pseudomonas syringae. We have examined tabtoxinine-beta-lactam biosynthesis, an important and poorly characterized step in pathogenesis cau
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e9038ee2e47af06fa85d373bca1b410
https://doi.org/10.1016/s0021-9258(18)61144-5
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10
The 5-O-beta-D-galactofuranosyl-containing glycopeptide from Penicillium charlesii. Identification of phosphocholine attached to C-6 of mannopyranosyl residues of the mannan region
Autor: C Jackson, J E Gander, C J Unkefer
Publikováno v: Journal of Biological Chemistry. 257:2491-2497
Peptidophosphogalactomannan from Penicillium charlesii contains ethanolamine, presumably linked via phosphodiester to galactomannan (Rick, P. D., Drewes, L. R., and Gander, J. E., (1974) J. Biol. Chem. 249, 2072-2078). These investigations have been
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::45e809540f087e134f52687495f9d71a
https://doi.org/10.1016/s0021-9258(18)34950-0
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