Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols
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Аутори
Martin, Leona B.Nikodinović-Runić, Jasmina
McMahon, Aoife M.
Vijgenboom, Erik
O'Connor, Kevin E.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Tyrosinase (tyr) purified from Pseudomonas putida F6, Streptomyces antibioticus, and Agaricus bisporus (mushroom) oxidises 3 regioisomers of fluorophenol as well as 3,4-difluorophenol (3,4FP). The catalytic efficiency (k(cat)/K-m) of tyrosinase towards any one substrate is different for each enzyme source. Oftentimes a large difference in affinity (K-m), and turnover (k(cat)) is observed for different enzyme sources with the same substrate. The best catalytic efficiency towards a fluorinated substrate was observed for P putida F6 tyr with 4-fluorophenol (4FP). The presence of a second fluorine on the aromatic ring (3,4FP) resulted in a decrease in the catalytic efficiency of all three enzymes compared to values for 4FP. However, the Km value for 3,4FP decreased for P. putida F6 tyr indicating a higher affinity for P. putida F6 tyr for 3,4FP compared to 4FP. Furthermore the k(cat) value for 3,4FP increased for mushroom tyr in comparison to the value for 4FP indicating a higher maximum t...urnover of 3,4FP compared to 4FP for mushroom tyr. All three sources of tyr exhibited lower catalytic efficiencies for 3-fluorophenol (3FP) and 2-fluorophenol (2FP) compared to 4FP. However, the K-m value for 2FP was lower than that for 3FP for both S. antibioticus and mushroom tyr indicating a higher affinity for 2FP over 3FP. (C) 2008 Elsevier Inc. All rights reserved.
Кључне речи:
Pseudomonas putida F6 / Streptomyces antibioticus / Agaricus bisporus (mushroom) / tyrosinase / 4-fluorophenol / 3,4-difluorophenol / 3-fluorophenol / 2-fluorophenolИзвор:
Enzyme and Microbial Technology, 2008, 43, 3, 297-301Издавач:
- Elsevier Science Inc, New York
DOI: 10.1016/j.enzmictec.2008.03.010
ISSN: 0141-0229
WoS: 000258217800011
Scopus: 2-s2.0-46749111362
Колекције
Институција/група
Inovacioni centar / Innovation CentreTY - JOUR AU - Martin, Leona B. AU - Nikodinović-Runić, Jasmina AU - McMahon, Aoife M. AU - Vijgenboom, Erik AU - O'Connor, Kevin E. PY - 2008 UR - https://cherry.chem.bg.ac.rs/handle/123456789/960 AB - Tyrosinase (tyr) purified from Pseudomonas putida F6, Streptomyces antibioticus, and Agaricus bisporus (mushroom) oxidises 3 regioisomers of fluorophenol as well as 3,4-difluorophenol (3,4FP). The catalytic efficiency (k(cat)/K-m) of tyrosinase towards any one substrate is different for each enzyme source. Oftentimes a large difference in affinity (K-m), and turnover (k(cat)) is observed for different enzyme sources with the same substrate. The best catalytic efficiency towards a fluorinated substrate was observed for P putida F6 tyr with 4-fluorophenol (4FP). The presence of a second fluorine on the aromatic ring (3,4FP) resulted in a decrease in the catalytic efficiency of all three enzymes compared to values for 4FP. However, the Km value for 3,4FP decreased for P. putida F6 tyr indicating a higher affinity for P. putida F6 tyr for 3,4FP compared to 4FP. Furthermore the k(cat) value for 3,4FP increased for mushroom tyr in comparison to the value for 4FP indicating a higher maximum turnover of 3,4FP compared to 4FP for mushroom tyr. All three sources of tyr exhibited lower catalytic efficiencies for 3-fluorophenol (3FP) and 2-fluorophenol (2FP) compared to 4FP. However, the K-m value for 2FP was lower than that for 3FP for both S. antibioticus and mushroom tyr indicating a higher affinity for 2FP over 3FP. (C) 2008 Elsevier Inc. All rights reserved. PB - Elsevier Science Inc, New York T2 - Enzyme and Microbial Technology T1 - Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols VL - 43 IS - 3 SP - 297 EP - 301 DO - 10.1016/j.enzmictec.2008.03.010 ER -
@article{ author = "Martin, Leona B. and Nikodinović-Runić, Jasmina and McMahon, Aoife M. and Vijgenboom, Erik and O'Connor, Kevin E.", year = "2008", abstract = "Tyrosinase (tyr) purified from Pseudomonas putida F6, Streptomyces antibioticus, and Agaricus bisporus (mushroom) oxidises 3 regioisomers of fluorophenol as well as 3,4-difluorophenol (3,4FP). The catalytic efficiency (k(cat)/K-m) of tyrosinase towards any one substrate is different for each enzyme source. Oftentimes a large difference in affinity (K-m), and turnover (k(cat)) is observed for different enzyme sources with the same substrate. The best catalytic efficiency towards a fluorinated substrate was observed for P putida F6 tyr with 4-fluorophenol (4FP). The presence of a second fluorine on the aromatic ring (3,4FP) resulted in a decrease in the catalytic efficiency of all three enzymes compared to values for 4FP. However, the Km value for 3,4FP decreased for P. putida F6 tyr indicating a higher affinity for P. putida F6 tyr for 3,4FP compared to 4FP. Furthermore the k(cat) value for 3,4FP increased for mushroom tyr in comparison to the value for 4FP indicating a higher maximum turnover of 3,4FP compared to 4FP for mushroom tyr. All three sources of tyr exhibited lower catalytic efficiencies for 3-fluorophenol (3FP) and 2-fluorophenol (2FP) compared to 4FP. However, the K-m value for 2FP was lower than that for 3FP for both S. antibioticus and mushroom tyr indicating a higher affinity for 2FP over 3FP. (C) 2008 Elsevier Inc. All rights reserved.", publisher = "Elsevier Science Inc, New York", journal = "Enzyme and Microbial Technology", title = "Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols", volume = "43", number = "3", pages = "297-301", doi = "10.1016/j.enzmictec.2008.03.010" }
Martin, L. B., Nikodinović-Runić, J., McMahon, A. M., Vijgenboom, E.,& O'Connor, K. E.. (2008). Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols. in Enzyme and Microbial Technology Elsevier Science Inc, New York., 43(3), 297-301. https://doi.org/10.1016/j.enzmictec.2008.03.010
Martin LB, Nikodinović-Runić J, McMahon AM, Vijgenboom E, O'Connor KE. Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols. in Enzyme and Microbial Technology. 2008;43(3):297-301. doi:10.1016/j.enzmictec.2008.03.010 .
Martin, Leona B., Nikodinović-Runić, Jasmina, McMahon, Aoife M., Vijgenboom, Erik, O'Connor, Kevin E., "Assessing the catalytic activity of three different sources of tyrosinase: A study of the oxidation of mono- and difluorinated monophenols" in Enzyme and Microbial Technology, 43, no. 3 (2008):297-301, https://doi.org/10.1016/j.enzmictec.2008.03.010 . .