PMID- 19457432 OWN - NLM STAT- MEDLINE DCOM- 20090910 LR - 20211028 IS - 1096-0309 (Electronic) IS - 0003-2697 (Print) IS - 0003-2697 (Linking) VI - 391 IP - 2 DP - 2009 Aug 15 TI - Ratiometric Raman spectroscopy for quantification of protein oxidative damage. PG - 121-6 LID - 10.1016/j.ab.2009.05.019 [doi] AB - A novel ratiometric Raman spectroscopic (RMRS) method has been developed for quantitative determination of protein carbonyl levels. Oxidized bovine serum albumin (BSA) and oxidized lysozyme were used as model proteins to demonstrate this method. The technique involves conjugation of protein carbonyls with dinitrophenyl hydrazine (DNPH), followed by drop coating deposition Raman spectral acquisition (DCDR). The RMRS method is easy to implement because it requires only one conjugation reaction, uses a single spectral acquisition, and does not require sample calibration. Characteristic peaks from both protein and DNPH moieties are obtained in a single spectral acquisition, allowing the protein carbonyl level to be calculated from the peak intensity ratio. Detection sensitivity for the RMRS method is approximately 0.33 pmol carbonyl per measurement. Fluorescence and/or immunoassay-based techniques only detect a signal from the labeling molecule and, thus, yield no structural or quantitative information for the modified protein, whereas the RMRS technique allows protein identification and protein carbonyl quantification in a single experiment. FAU - Zhang, Dongmao AU - Zhang D AD - Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA. dz33@msstate.edu FAU - Jiang, Dongping AU - Jiang D FAU - Yanney, Michael AU - Yanney M FAU - Zou, Sige AU - Zou S FAU - Sygula, Andrzej AU - Sygula A LA - eng GR - ZIA AG000366-02/ImNIH/Intramural NIH HHS/United States PT - Journal Article DEP - 20090518 PL - United States TA - Anal Biochem JT - Analytical biochemistry JID - 0370535 RN - 0 (Hydrazines) RN - 0 (dinitrophenylhydrazine) RN - 27432CM55Q (Serum Albumin, Bovine) RN - EC 3.2.1.17 (Muramidase) SB - IM MH - Animals MH - Cattle MH - Hydrazines/chemistry MH - Muramidase/*analysis/chemistry MH - Oxidation-Reduction MH - *Oxidative Stress MH - Serum Albumin, Bovine/*analysis/chemistry MH - Spectrum Analysis, Raman/*methods PMC - PMC2773654 MID - NIHMS155500 EDAT- 2009/05/22 09:00 MHDA- 2009/09/11 06:00 PMCR- 2009/11/05 CRDT- 2009/05/22 09:00 PHST- 2009/03/27 00:00 [received] PHST- 2009/05/06 00:00 [revised] PHST- 2009/05/12 00:00 [accepted] PHST- 2009/05/22 09:00 [entrez] PHST- 2009/05/22 09:00 [pubmed] PHST- 2009/09/11 06:00 [medline] PHST- 2009/11/05 00:00 [pmc-release] AID - S0003-2697(09)00334-0 [pii] AID - 10.1016/j.ab.2009.05.019 [doi] PST - ppublish SO - Anal Biochem. 2009 Aug 15;391(2):121-6. doi: 10.1016/j.ab.2009.05.019. Epub 2009 May 18.