Results 271 to 280 of about 354,018 (307)
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Synthesis of Fragments of the Peptide Component of Pseudobactin
Journal of Peptide Science, 1996AbstractPseudobactin is a structurally complex and physiologically important siderophore (microbial iron chelator) from Pseudomonas putida‐ fluorescens. Various fragments of the unusual peptide component of pseudobactin listed below were prepared by solution‐phase peptide synthesis.L‐Lys· D‐threo‐β‐OH Asp· L‐Ala· D‐allo‐Thr· L‐AlaL‐Lys· D‐threo‐βOH Asp·
J F, Okonya, T, Kolasa, M J, Miller
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Peptide Fragmentation during Nanoelectrospray Ionization
Analytical Chemistry, 2010Electrospray ionization (ESI) is considered a soft ionization method, and typically no peptide ion fragmentation is observed. Recently, it has been observed that intensive fragmentation of peptide ions can occur during nanoelectrospray (nanoESI) at special conditions, such as solutions containing high concentrations of salt and relatively low voltage ...
He, Wang, Zheng, Ouyang, Yu, Xia
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Peptide Fragment Intensity Statistical Modeling
Analytical Chemistry, 2007We present new statistical models of peptide fragment peak intensities that achieve unprecedented accuracy, and we discuss their application to the problem of scoring in database searching or peptide de novo sequencing. The models, made available via open-source computer programs, are very general and can potentially improve any intensity-based scoring.
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Studies on peptide fragments of prion proteins
2001Publisher Summary The prion diseases are neurodegenerative disorders of humans and animals that are sporadic or inherited in origin and can be transmitted. Despite remarkable differences in phenotypic expression, these disorders share a similar pathogenic mechanism— that is, a post-translational modification of the prion protein from a normal ...
Tagliavini F +4 more
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Fragmentation studies of peptides: The formation of Y ions
Rapid Communications in Mass Spectrometry, 1992Abstract The mechanism for the formation of y ions in the collision‐induced dissociation (CID) spectra of protonated peptides produced by fast‐atom bombardment was investigated by tandem mass spectrometry and deuterium labelling studies.
P T, Kenny, K, Nomoto, R, Orlando
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Fragmentation induced in atmospheric pressure photoionization of peptides
Journal of Mass Spectrometry, 2006AbstractIn this work, the fragmentation of peptides under atmospheric pressure photoionization conditions is investigated. Intensive fragmentations into b/y‐ and c‐sequence ions are reported. Abundance of these c‐ions appeared to be related to the quantity of dopant infused and to the disappearance of the doubly protonated peptide ion.
Debois, Delphine +2 more
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Lipolytic Activity of a Peptide Fragment of Porcine Secretin
Endocrinology, 1969Synthetic porcine secretin, a peptide chain of 27 amino acids, accelerates li poly sis in rat and mouse fat cells. Six synthetic fragments of the porcine secretin molecule have now been assayed for lipolytic activity on free fat cells of the rat: peptides 23–27, 14–27, 9–27, 5–27, 5–14 and 1–14.
D, Rudman, A E, Del Rio
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Hypersensitivity to Peptide Fragments
International Archives of Allergy and Applied Immunology, 2009S B, Salvin, H L, Liauw
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Minithioredoxin: A Folded and Functional Peptide Fragment of Thioredoxin
Biochemical and Biophysical Research Communications, 1999A peptide fragment comprising the first 83 residues from the N-terminus of E. coli thioredoxin is purified by hydroxylamine cleavage of the intact protein. At physiological pH, the secondary and tertiary structure contents of the peptide are 70 and 35%, respectively, compared to the intact protein.
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