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Rapid analysis of phosphoamino acids from phosvitin by near-infrared cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium derivatization and polyacrylamide-coated CE with LIF detection.
Electrophoresis. 2011 Mar; 32(6-7):712-9.E

Abstract

A polyacrylamide-coated CE method with LIF detection was developed for analyzing three phosphoamino acids including phosphotyrosine (p-Tyr), phosphothreonine (p-Thr), and phosphoserine (p-Ser). A near-infrared dye, 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium (MeCy5-OSu) was employed for derivatization of these phosphoamino acids. Results indicated that the complete baseline resolution of each phosphoamino acid was obtained within 6.1 min, using 10 mmol/L phosphate buffer (pH 4.0) containing 60 mmol/L SDS as running buffer. The highest derivatization efficiency was achieved in 0.2 mol/L borate buffer (pH 8.8) for 30 min at 30 °C. Linearity of response was found in the range of 0.05-1 μmol/L. The correlation coefficients for these phosphoamino acids were from 0.9940 to 0.9976. The LODs for phosphotyrosine, phosphothreonine, and phosphoserine were about 6, 8, and 8 nmol/L, respectively. The proposed method has been successfully applied to the determination of phosphoamino acids in the hydrolysis sample of a phosphorylated phosvitin. Average recoveries for phosvitin sample were in the range of 94.0-98.0% and coefficients of variation ranged from 2.7 to 4.8%.

Authors+Show Affiliations

Department of Chemistry, Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Wuhan University, Wuhan, P. R. China.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21365656

Citation

Fu, Ni-Na, et al. "Rapid Analysis of Phosphoamino Acids From Phosvitin By Near-infrared Cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate Potassium Derivatization and Polyacrylamide-coated CE With LIF Detection." Electrophoresis, vol. 32, no. 6-7, 2011, pp. 712-9.
Fu NN, Wang H, Zhang HS. Rapid analysis of phosphoamino acids from phosvitin by near-infrared cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium derivatization and polyacrylamide-coated CE with LIF detection. Electrophoresis. 2011;32(6-7):712-9.
Fu, N. N., Wang, H., & Zhang, H. S. (2011). Rapid analysis of phosphoamino acids from phosvitin by near-infrared cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium derivatization and polyacrylamide-coated CE with LIF detection. Electrophoresis, 32(6-7), 712-9. https://doi.org/10.1002/elps.201000540
Fu NN, Wang H, Zhang HS. Rapid Analysis of Phosphoamino Acids From Phosvitin By Near-infrared Cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate Potassium Derivatization and Polyacrylamide-coated CE With LIF Detection. Electrophoresis. 2011;32(6-7):712-9. PubMed PMID: 21365656.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rapid analysis of phosphoamino acids from phosvitin by near-infrared cyanine 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium derivatization and polyacrylamide-coated CE with LIF detection. AU - Fu,Ni-Na, AU - Wang,Hong, AU - Zhang,Hua-Shan, Y1 - 2011/03/01/ PY - 2010/10/13/received PY - 2010/12/15/revised PY - 2010/12/22/accepted PY - 2011/3/3/entrez PY - 2011/3/3/pubmed PY - 2011/6/21/medline SP - 712 EP - 9 JF - Electrophoresis JO - Electrophoresis VL - 32 IS - 6-7 N2 - A polyacrylamide-coated CE method with LIF detection was developed for analyzing three phosphoamino acids including phosphotyrosine (p-Tyr), phosphothreonine (p-Thr), and phosphoserine (p-Ser). A near-infrared dye, 1-(ε-succinimydyl-hexanoate)-1'-methyl-3,3,3',3'-tetramethyl-indocarbocyanine-5,5'-disulfonate potassium (MeCy5-OSu) was employed for derivatization of these phosphoamino acids. Results indicated that the complete baseline resolution of each phosphoamino acid was obtained within 6.1 min, using 10 mmol/L phosphate buffer (pH 4.0) containing 60 mmol/L SDS as running buffer. The highest derivatization efficiency was achieved in 0.2 mol/L borate buffer (pH 8.8) for 30 min at 30 °C. Linearity of response was found in the range of 0.05-1 μmol/L. The correlation coefficients for these phosphoamino acids were from 0.9940 to 0.9976. The LODs for phosphotyrosine, phosphothreonine, and phosphoserine were about 6, 8, and 8 nmol/L, respectively. The proposed method has been successfully applied to the determination of phosphoamino acids in the hydrolysis sample of a phosphorylated phosvitin. Average recoveries for phosvitin sample were in the range of 94.0-98.0% and coefficients of variation ranged from 2.7 to 4.8%. SN - 1522-2683 UR - https://www.unboundmedicine.com/medline/citation/21365656/Rapid_analysis_of_phosphoamino_acids_from_phosvitin_by_near_infrared_cyanine_1__ε_succinimydyl_hexanoate__1'_methyl_333'3'_tetramethyl_indocarbocyanine_55'_disulfonate_potassium_derivatization_and_polyacrylamide_coated_CE_with_LIF_detection_ L2 - https://doi.org/10.1002/elps.201000540 DB - PRIME DP - Unbound Medicine ER -