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Page 1
Gas-phase structure and fragmentation pathways of singly protonated peptides with N-terminal arginine.
Bythell BJ, Csonka IP, Suhai S, Barofsky DF, Paizs B. Bythell BJ, et al. Among authors: paizs b. J Phys Chem B. 2010 Nov 25;114(46):15092-105. doi: 10.1021/jp108452y. Epub 2010 Oct 25. J Phys Chem B. 2010. PMID: 20973555 Free PMC article.
This is due to facile mobilization of the C-terminal or aspartic acid COOH protons thereby generating salt-bridge (SB) stabilized structures. These SB intermediates can directly fragment to generate b(2) ions or facilely rearrange to form anhydrides from which both b …
This is due to facile mobilization of the C-terminal or aspartic acid COOH protons thereby generating salt-bridge (SB) stabilized structures …
Towards understanding the tandem mass spectra of protonated oligopeptides. 1: mechanism of amide bond cleavage.
Paizs B, Suhai S. Paizs B, et al. J Am Soc Mass Spectrom. 2004 Jan;15(1):103-13. doi: 10.1016/j.jasms.2003.09.010. J Am Soc Mass Spectrom. 2004. PMID: 14698560
This fact explains the increasing ion abundances observed for the b(2)/y(3), b(3)/y(2), and b(4)/y(1) ion pairs in the metastable ion and low-energy collision induced mass spectra (Yalcin, T.; Csizmadia, I. ...A linear free-energy relationship is used to appr …
This fact explains the increasing ion abundances observed for the b(2)/y(3), b(3)/y(2), and b(4)/y(1) ion pairs in the …
Fragmentation pathways of protonated peptides.
Paizs B, Suhai S. Paizs B, et al. Mass Spectrom Rev. 2005 Jul-Aug;24(4):508-48. doi: 10.1002/mas.20024. Mass Spectrom Rev. 2005. PMID: 15389847 Review.
Cross-Linked Enzyme-Adhered Nanoparticles (CLEANs) for Continuous-Flow Bioproduction.
Nagy F, Sánta-Bell E, Jipa M, Hornyánszky G, Szilágyi A, László K, Katona G, Paizs C, Poppe L, Balogh-Weiser D. Nagy F, et al. Among authors: paizs c. ChemSusChem. 2022 Jan 21;15(2):e202102284. doi: 10.1002/cssc.202102284. Epub 2021 Dec 16. ChemSusChem. 2022. PMID: 34913608
These CLEANs were able to diminish several weaknesses of traditional cross-linked enzyme aggregates as biocatalysts, such as poor mechanical resistance, difficult recovery, and storage, strengthening their use for packed-bed enzyme reactors. Lipase B from Candida antarctic …
These CLEANs were able to diminish several weaknesses of traditional cross-linked enzyme aggregates as biocatalysts, such as poor mechanical …
Infrared spectroscopy and theoretical studies on gas-phase protonated leu-enkephalin and its fragments: direct experimental evidence for the mobile proton.
Polfer NC, Oomens J, Suhai S, Paizs B. Polfer NC, et al. Among authors: paizs b. J Am Chem Soc. 2007 May 9;129(18):5887-97. doi: 10.1021/ja068014d. Epub 2007 Apr 12. J Am Chem Soc. 2007. PMID: 17428052
For the former structure, two sites of proton attachment are observed, on the N-terminus and on the oxazolone ring nitrogen, as shown in a previous communication (Polfer, N. C.; Oomens, J.; Suhai, S.; Paizs, B. J. Am. Chem. Soc. 2005, 127, 17154-17155). Upon leaving the io …
For the former structure, two sites of proton attachment are observed, on the N-terminus and on the oxazolone ring nitrogen, as shown in a p …
Experimental and theoretical investigation of the main fragmentation pathways of protonated H-Gly-Gly-Sar-OH and H-Gly-Sar-Sar-OH.
Paizs B, Suhai S, Harrison AG. Paizs B, et al. J Am Soc Mass Spectrom. 2003 Dec;14(12):1454-69. doi: 10.1016/j.jasms.2003.07.001. J Am Soc Mass Spectrom. 2003. PMID: 14652192 Free article.
The main goal of these studies is to further investigate which factors determine the branching ratio of the b2-y1 (Paizs, B.; Suhai, S. Rapid Commun. Mass Spectrom. 2002, 16, 375.) and "diketopiperazine" (Cordero, M. ...Protonated H-Gly-Sar-Sar-OH represents a sensitive te …
The main goal of these studies is to further investigate which factors determine the branching ratio of the b2-y1 (Paizs, B.; Suhai, …
Sequence-scrambling fragmentation pathways of protonated peptides.
Bleiholder C, Osburn S, Williams TD, Suhai S, Van Stipdonk M, Harrison AG, Paizs B. Bleiholder C, et al. Among authors: paizs b. J Am Chem Soc. 2008 Dec 31;130(52):17774-89. doi: 10.1021/ja805074d. J Am Chem Soc. 2008. PMID: 19055406
Our combined experimental and theoretical approach allows probing of the scrambling and rearrangement reactions that take place in CID of b and a ions. It is shown that low-energy CID of the b(5) fragments of the above peptides produces nearly the same dissociation …
Our combined experimental and theoretical approach allows probing of the scrambling and rearrangement reactions that take place in CID of …
Nanobioconjugates of Candida antarctica lipase B and single-walled carbon nanotubes in biodiesel production.
Bencze LC, Bartha-Vári JH, Katona G, Toşa MI, Paizs C, Irimie FD. Bencze LC, et al. Among authors: paizs c. Bioresour Technol. 2016 Jan;200:853-60. doi: 10.1016/j.biortech.2015.10.072. Epub 2015 Oct 27. Bioresour Technol. 2016. PMID: 26590760
Carboxylated single-walled carbon nanotubes (SWCNTCOOH) were used as support for covalent immobilization of Candida antarctica lipase B (CaL-B) using linkers with different lengths. The obtained nanostructured biocatalysts with low diffusional limitation were tested …
Carboxylated single-walled carbon nanotubes (SWCNTCOOH) were used as support for covalent immobilization of Candida antarctica lipase B …
Effect of the His residue on the cyclization of b ions.
Bythell BJ, Knapp-Mohammady M, Paizs B, Harrison AG. Bythell BJ, et al. Among authors: paizs b. J Am Soc Mass Spectrom. 2010 Aug;21(8):1352-63. doi: 10.1016/j.jasms.2010.05.006. Epub 2010 May 13. J Am Soc Mass Spectrom. 2010. PMID: 20541953 Free article.
The product ion mass spectra of the b(4) and b(5) ions from these isomeric peptides with cyclically permuted amino acid sequences are similar, but also show clear differences. ...For both b(4) and b(5) the energetically most favored structure is a macr …
The product ion mass spectra of the b(4) and b(5) ions from these isomeric peptides with cyclically permuted amino acid sequen …
Using gas-phase guest-host chemistry to probe the structures of b ions of peptides.
Somogyi Á, Harrison AG, Paizs B. Somogyi Á, et al. Among authors: paizs b. J Am Soc Mass Spectrom. 2012 Dec;23(12):2055-8. doi: 10.1007/s13361-012-0487-7. Epub 2012 Sep 21. J Am Soc Mass Spectrom. 2012. PMID: 22996293
Experiments on a protonated cyclic peptide and N-terminal acetylated peptides fully support this hypothesis; the protonated cyclic peptide does form ammonia adducts while linear b(n) ions of acetylated peptides do not undergo complexation. Density functional theory (DFT) c …
Experiments on a protonated cyclic peptide and N-terminal acetylated peptides fully support this hypothesis; the protonated cyclic peptide d …
38 results