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Combined electron transfer dissociation-collision-induced dissociation fragmentation in the mass spectrometric distinction of leucine, isoleucine, and hydroxyproline residues in Peptide natural products.
Gupta K, Kumar M, Chandrashekara K, Krishnan KS, Balaram P. Gupta K, et al. J Proteome Res. 2012 Feb 3;11(2):515-22. doi: 10.1021/pr200091v. Epub 2011 Dec 28. J Proteome Res. 2012. PMID: 22111579
Mass spectrometric analysis of dimer-disrupting mutations in Plasmodium triosephosphate isomerase.
Bandyopadhyay D, Prakash S, Gupta K, Balaram P. Bandyopadhyay D, et al. Among authors: gupta k. Anal Biochem. 2016 May 1;500:45-50. doi: 10.1016/j.ab.2016.02.011. Epub 2016 Feb 23. Anal Biochem. 2016. PMID: 26919806
Rapid mass spectrometric determination of disulfide connectivity in peptides and proteins.
Bhattacharyya M, Gupta K, Gowd KH, Balaram P. Bhattacharyya M, et al. Among authors: gupta k. Mol Biosyst. 2013 Jun;9(6):1340-50. doi: 10.1039/c3mb25534d. Epub 2013 Mar 7. Mol Biosyst. 2013. PMID: 23467691
Lipopeptides from the banyan endophyte, Bacillus subtilis K1: mass spectrometric characterization of a library of fengycins.
Pathak KV, Keharia H, Gupta K, Thakur SS, Balaram P. Pathak KV, et al. Among authors: gupta k. J Am Soc Mass Spectrom. 2012 Oct;23(10):1716-28. doi: 10.1007/s13361-012-0437-4. Epub 2012 Jul 31. J Am Soc Mass Spectrom. 2012. PMID: 22847390
Mass spectrometric identification of an intramolecular disulfide bond in thermally inactivated triosephosphate isomerase from a thermophilic organism Methanocaldococcus jannaschii.
Banerjee M, Gupta K, Balaram H, Balaram P. Banerjee M, et al. Among authors: gupta k. Rapid Commun Mass Spectrom. 2011 Jul 30;25(14):1915-23. doi: 10.1002/rcm.5058. Rapid Commun Mass Spectrom. 2011. PMID: 21698673
Identification of alpha- and beta-hydroxy acid containing cyclodepsipeptides in natural peptide mixtures using negative ion mass spectrometry.
Thakur SS, Ranganayaki RS, Gupta K, Balaram P. Thakur SS, et al. Among authors: gupta k. J Am Soc Mass Spectrom. 2009 Dec;20(12):2221-8. doi: 10.1016/j.jasms.2009.08.010. Epub 2009 Aug 27. J Am Soc Mass Spectrom. 2009. PMID: 19811932
Disulfide bond assignments by mass spectrometry of native natural peptides: cysteine pairing in disulfide bonded conotoxins.
Gupta K, Kumar M, Balaram P. Gupta K, et al. Anal Chem. 2010 Oct 1;82(19):8313-9. doi: 10.1021/ac101867e. Anal Chem. 2010. PMID: 20843009
Cyclic AMP-dependent protein lysine acylation in mycobacteria regulates fatty acid and propionate metabolism.
Nambi S, Gupta K, Bhattacharyya M, Ramakrishnan P, Ravikumar V, Siddiqui N, Thomas AT, Visweswariah SS. Nambi S, et al. Among authors: gupta k. J Biol Chem. 2013 May 17;288(20):14114-24. doi: 10.1074/jbc.M113.463992. Epub 2013 Apr 3. J Biol Chem. 2013. PMID: 23553634 Free PMC article.
Ammonia channeling in Plasmodium falciparum GMP synthetase: investigation by NMR spectroscopy and biochemical assays.
Bhat JY, Venkatachala R, Singh K, Gupta K, Sarma SP, Balaram H. Bhat JY, et al. Among authors: gupta k. Biochemistry. 2011 Apr 26;50(16):3346-56. doi: 10.1021/bi1017057. Epub 2011 Apr 1. Biochemistry. 2011. PMID: 21413787
Delayed yet effective response of an endolymphatic sac tumor to radiosurgery: case report focusing on its radio-biological behavior.
Sahoo SK, Salunke P, Gupta K, Madan R. Sahoo SK, et al. Among authors: gupta k. Br J Neurosurg. 2020 Nov 25:1-4. doi: 10.1080/02688697.2020.1849553. Online ahead of print. Br J Neurosurg. 2020. PMID: 33236933
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