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Yin M, Matsuoka R, Yanagisawa T, Xi Y, Zhang L, Wang X. Effect of different drying methods on free amino acid and flavor nucleotides of scallop (patinopecten yessoensis) adductor muscle. Food Chem 2022; 396:133620. [PMID: 35843006 DOI: 10.1016/j.foodchem.2022.133620] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 01/17/2023]
Abstract
The effects of hot air drying (HAD), vacuum hot air drying (VHAD), microwave drying (MWD), and vacuum freeze drying (VFD) on free amino acids (FAAs) and flavor nucleotides in scallop adductor muscle (SAM) were studied. The liquid chromatography and multidimensional infrared spectroscopy (MM-IR) were used. Compared with fresh SAM, the main FAAs were glycine, alanine, arginine, and glutamic acid in dried SAM. The total FAAs content in VFD group was 1.40-1.90 times of the other group. The umami taste nucleotides (IMP and AMP) content in the VFD and MWD groups was significantly higher than that in HAD and VHAD groups. Equivalent umami concentrations were found: VFD > MWD > VHAD > HAD. MM-IR analysis was an efficient method for identifying taste components. The results revealed FAAs and flavor nucleotides and the mutual adjustment of compounds were related to drying method, and VFD was preferred for taste substance retention in scallops.
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Affiliation(s)
- Mingyu Yin
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | | | | | - Yinci Xi
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Long Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Xichang Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
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Mohapatra RK, Das PK, Pradhan MK, El-Ajaily MM, Das D, Salem HF, Mahanta U, Badhei G, Parhi PK, Maihub AA, -E-Zahan MK. Recent Advances in Urea- and Thiourea-Based Metal Complexes: Biological, Sensor, Optical, and Corroson Inhibition Studies. COMMENT INORG CHEM 2019. [DOI: 10.1080/02603594.2019.1594204] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ranjan K. Mohapatra
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, India
| | - Pradeep K. Das
- Department of Chemistry, N. C. Autonomous College, Jajpur, Odisha, India
| | - Manoj K. Pradhan
- Department of Chemistry, Government College of Engineering, Keonjhar, Odisha, India
| | - Marei M. El-Ajaily
- Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
| | - Debadutta Das
- Department of Chemistry, Sukanti Degree College, Subarnapur, Odisha, India
| | - Halima F. Salem
- Chemistry Department, Faculty of Science, Benghazi University, Benghazi, Libya
| | - Umakanta Mahanta
- Department of Chemistry, B. B. Mahavidyalaya, Harichandanpur, Keonjhar, Odisha, India
| | - Gouranga Badhei
- Department of Chemistry, SKDAV Government Polytechnic, Rourkela, Odisha, India
| | - Pankaj K. Parhi
- School of Chemical Technology, KIIT Deemed to be University, Bhubaneswar, Odisha, India
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Li J, Koto T, Davis I, Liu A. Probing the Cys-Tyr Cofactor Biogenesis in Cysteine Dioxygenase by the Genetic Incorporation of Fluorotyrosine. Biochemistry 2019; 58:2218-2227. [PMID: 30946568 DOI: 10.1021/acs.biochem.9b00006] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cysteine dioxygenase (CDO) is a nonheme iron enzyme that adds two oxygen atoms from dioxygen to the sulfur atom of l-cysteine. Adjacent to the iron site of mammalian CDO, there is a post-translationally generated Cys-Tyr cofactor, whose presence substantially enhances the oxygenase activity. The formation of the Cys-Tyr cofactor in CDO is an autocatalytic process, and it is challenging to study by traditional techniques because the cross-linking reaction is a side, uncoupled, single-turnover oxidation buried among multiple turnovers of l-cysteine oxygenation. Here, we take advantage of our recent success in obtaining a purely uncross-linked human CDO due to site-specific incorporation of 3,5-difluoro-l-tyrosine (F2-Tyr) at the cross-linking site through the genetic code expansion strategy. Using EPR spectroscopy, we show that nitric oxide (•NO), an oxygen surrogate, similarly binds to uncross-linked F2-Tyr157 CDO as in wild-type human CDO. We determined X-ray crystal structures of uncross-linked F2-Tyr157 CDO and mature wild-type CDO in complex with both l-cysteine and •NO. These structural data reveal that the active site cysteine (Cys93 in the human enzyme), rather than the generally expected tyrosine (i.e., Tyr157), is well-aligned to be oxidized should the normal oxidation reaction uncouple. This structure-based understanding is further supported by a computational study with models built on the uncross-linked ternary complex structure. Together, these results strongly suggest that the first target to oxidize during the iron-assisted Cys-Tyr cofactor biogenesis is Cys93. Based on these data, a plausible reaction mechanism implementing a cysteine radical involved in the cross-link formation is proposed.
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Affiliation(s)
- Jiasong Li
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Teruaki Koto
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Ian Davis
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
| | - Aimin Liu
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , United States
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Vilím J, Knaus T, Mutti FG. Catalytic Promiscuity of Galactose Oxidase: A Mild Synthesis of Nitriles from Alcohols, Air, and Ammonia. Angew Chem Int Ed Engl 2018; 57:14240-14244. [PMID: 30176101 PMCID: PMC6220830 DOI: 10.1002/anie.201809411] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 11/26/2022]
Abstract
We report an unprecedented catalytically promiscuous activity of the copper-dependent enzyme galactose oxidase. The enzyme catalyses the one-pot conversion of alcohols into the related nitriles under mild reaction conditions in ammonium buffer, consuming ammonia as the source of nitrogen and dioxygen (from air at atmospheric pressure) as the only oxidant. Thus, this green method does not require either cyanide salts, toxic metals, or undesired oxidants in stoichiometric amounts. The substrate scope of the reaction includes benzyl and cinnamyl alcohols as well as 4- and 3-pyridylmethanol, giving access to valuable chemical compounds. The oxidation proceeds through oxidation from alcohol to aldehyde, in situ imine formation, and final direct oxidation to nitrile.
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Affiliation(s)
- Jan Vilím
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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Vilím J, Knaus T, Mutti FG. Catalytic Promiscuity of Galactose Oxidase: A Mild Synthesis of Nitriles from Alcohols, Air, and Ammonia. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809411] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jan Vilím
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Tanja Knaus
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-Biocat; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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Cleavage of a carbon-fluorine bond by an engineered cysteine dioxygenase. Nat Chem Biol 2018; 14:853-860. [PMID: 29942080 PMCID: PMC6103799 DOI: 10.1038/s41589-018-0085-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 05/04/2018] [Indexed: 11/08/2022]
Abstract
Cysteine dioxygenase (CDO) plays an essential role in sulfur metabolism by regulating homeostatic levels of cysteine. Human CDO contains a post-translationally generated Cys93-Tyr157 cross-linked cofactor. Here, we investigated this Cys-Tyr cross-linking by incorporating unnatural tyrosines in place of Tyr157 via a genetic method. The catalytically active variants were obtained with a thioether bond between Cys93 and the halogen-substituted Tyr157, and we determined the crystal structures of both wild-type and engineered CDO variants in the purely uncross-linked form and with a mature cofactor. Along with mass spectrometry and 19F NMR, these data indicated that the enzyme could catalyze oxidative C-F or C-Cl bond cleavage, resulting in a substantial conformational change of both Cys93 and Tyr157 during cofactor assembly. These findings provide insights into the mechanism of Cys-Tyr cofactor biogenesis and may aid the development of bioinspired aromatic carbon-halogen bond activation.
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Wang Y, Griffith WP, Li J, Koto T, Wherritt DJ, Fritz E, Liu A. Cofactor Biogenesis in Cysteamine Dioxygenase: C−F Bond Cleavage with Genetically Incorporated Unnatural Tyrosine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yifan Wang
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Wendell P. Griffith
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Jiasong Li
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Teruaki Koto
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Daniel J. Wherritt
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Elizabeth Fritz
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
| | - Aimin Liu
- Department of Chemistry The University of Texas at San Antonio San Antonio TX USA
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Wang Y, Griffith WP, Li J, Koto T, Wherritt DJ, Fritz E, Liu A. Cofactor Biogenesis in Cysteamine Dioxygenase: C-F Bond Cleavage with Genetically Incorporated Unnatural Tyrosine. Angew Chem Int Ed Engl 2018; 57:8149-8153. [PMID: 29752763 DOI: 10.1002/anie.201803907] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Indexed: 12/22/2022]
Abstract
Cysteamine dioxygenase (ADO) is a thiol dioxygenase whose study has been stagnated by the ambiguity as to whether or not it possesses an anticipated protein-derived cofactor. Reported herein is the discovery and elucidation of a Cys-Tyr cofactor in human ADO, crosslinked between Cys220 and Tyr222 through a thioether (C-S) bond. By genetically incorporating an unnatural amino acid, 3,5-difluoro-tyrosine (F2 -Tyr), specifically into Tyr222 of human ADO, an autocatalytic oxidative carbon-fluorine bond activation and fluoride release were identified by mass spectrometry and 19 F NMR spectroscopy. These results suggest that the cofactor biogenesis is executed by a powerful oxidant during an autocatalytic process. Unlike that of cysteine dioxygenase, the crosslinking results in a minimal structural change of the protein and it is not detectable by routine low-resolution techniques. Finally, a new sequence motif, C-X-Y-Y(F), is proposed for identifying the Cys-Tyr crosslink.
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Affiliation(s)
- Yifan Wang
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Wendell P Griffith
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Jiasong Li
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Teruaki Koto
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Daniel J Wherritt
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Elizabeth Fritz
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Aimin Liu
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX, USA
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