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Azizi-Dargahlou S, Pouresmaeil M, Ahmadabadi M. Tobacco Plant: A Novel and Promising Heterologous Bioreactor for the Production of Recombinant Bovine Chymosin. Mol Biotechnol 2024:10.1007/s12033-023-01043-z. [PMID: 38244177 DOI: 10.1007/s12033-023-01043-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/18/2023] [Indexed: 01/22/2024]
Abstract
The natural source of chymosin, a key enzyme in the dairy industry, is insufficient for rapidly growing cheese industries. Large-scale production of recombinant proteins in heterologous hosts provides an efficient alternative solution. Here, the codon-optimized synthetic prochymosin gene, which has a CAI index of 0.926, was subcloned from a cloning vector (pUC57-bCYM) into the pBI121 vector, resulting in the construct named pBI121-bCYM. CAI ranges from 0 to 1 and higher CAI improves gene expression in heterologous hosts. The overexpression of the prochymosin gene was under the control of constitutive CaMV 35S promoter and NOS terminator and was transferred into the tobacco via A. tumefaciens strain LBA4404. Explant type, regeneration method, inoculation temperature, cell density (OD600) of Agrobacterium for inoculation, and acetosyringone concentration were leaf explants, direct somatic embryogenesis, 19 °C, 0.1, and 100 µM, respectively. The successful integration and expression of the prochymosin gene, along with the bioactivity of recombinant chymosin, were confirmed by PCR, RT-PCR, and milk coagulation assay, respectively. Overall, this study reports the first successful overexpression of the codon-optimized prochymosin form of the bovine chymosin enzyme in the tobacco via indirect transformation. Production of recombinant bovine chymosin in plants can be an easy-to-scale-up, safe, and inexpensive platform.
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Affiliation(s)
- Shahnam Azizi-Dargahlou
- Seed and Plant Certification and Registration Institute, Ardabil Agricultural and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Mahin Pouresmaeil
- Faculty of Agricultural Sciences and Natural Resources, University of Mohaghegh Ardabili, Ardabi, Iran
| | - Mohammad Ahmadabadi
- Department of Biotechnology, Azarbaijan Shahid Madani University, Tabriz, Iran
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2
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Balabova DV, Belash EA, Belenkaya SV, Shcherbakov DN, Belov AN, Koval AD, Mironova AV, Bondar AA, Volosnikova EA, Arkhipov SG, Sokolova OO, Chirkova VY, Elchaninov VV. Biochemical Properties of a Promising Milk-Clotting Enzyme, Moose ( Alces alces) Recombinant Chymosin. Foods 2023; 12:3772. [PMID: 37893665 PMCID: PMC10606240 DOI: 10.3390/foods12203772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Moose (Alces alces) recombinant chymosin with a milk-clotting activity of 86 AU/mL was synthesized in the Kluyveromyces lactis expression system. After precipitation with ammonium sulfate and chromatographic purification, a sample of genetically engineered moose chymosin with a specific milk-clotting activity of 15,768 AU/mg was obtained, which was used for extensive biochemical characterization of the enzyme. The threshold of the thermal stability of moose chymosin was 55 °C; its complete inactivation occurred after heating at 60 °C. The total proteolytic activity of moose chymosin was 0.332 A280 units. The ratio of milk-clotting and total proteolytic activities of the enzyme was 0.8. The Km, kcat and kcat/Km values of moose chymosin were 4.7 μM, 98.7 s-1, and 21.1 μM-1 s-1, respectively. The pattern of change in the coagulation activity as a function of pH and Ca2+ concentration was consistent with the requirements for milk coagulants for cheese making. The optimum temperature of the enzyme was 50-55 °C. The introduction of Mg2+, Zn2+, Co2+, Ba2+, Fe2+, Mn2+, Ca2+, and Cu2+ into milk activated the coagulation ability of moose chymosin, while Ni ions on the contrary inhibited its activity. Using previously published data, we compared the biochemical properties of recombinant moose chymosin produced in bacterial (Escherichia coli) and yeast (K. lactis) producers.
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Affiliation(s)
- Dina V. Balabova
- Institute of Biology and Biotechnology, Altai State University, 656049 Barnaul, Russia
| | - Ekaterina A. Belash
- Institute of Biology and Biotechnology, Altai State University, 656049 Barnaul, Russia
| | - Svetlana V. Belenkaya
- State Research Center for Virology and Biotechnology “Vector”, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Dmitry N. Shcherbakov
- Institute of Biology and Biotechnology, Altai State University, 656049 Barnaul, Russia
- State Research Center for Virology and Biotechnology “Vector”, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Alexander N. Belov
- Federal Altai Scientific Center for Agrobiotechnologies, Siberian Research Institute of Cheese Making, 656910 Barnaul, Russia
| | - Anatoly D. Koval
- Federal Altai Scientific Center for Agrobiotechnologies, Siberian Research Institute of Cheese Making, 656910 Barnaul, Russia
| | - Anna V. Mironova
- Federal Altai Scientific Center for Agrobiotechnologies, Siberian Research Institute of Cheese Making, 656910 Barnaul, Russia
| | - Alexander A. Bondar
- JCF “Genomics”, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Ekaterina A. Volosnikova
- State Research Center for Virology and Biotechnology “Vector”, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Sergey G. Arkhipov
- Boreskov Institute of Catalysis, Siberan Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Olga O. Sokolova
- Boreskov Institute of Catalysis, Siberan Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Varvara Y. Chirkova
- Institute of Biology and Biotechnology, Altai State University, 656049 Barnaul, Russia
| | - Vadim V. Elchaninov
- Federal Altai Scientific Center for Agrobiotechnologies, Siberian Research Institute of Cheese Making, 656910 Barnaul, Russia
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3
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Murashkin DE, Belenkaya SV, Bondar AA, Elchaninov VV, Shcherbakov DN. Analysis of Some Biochemical Properties of Recombinant Siberian Roe Deer (Capreolus pygargus) Chymosin Obtained in the Mammalian Cell Culture (CHO-K1). BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1284-1295. [PMID: 37770395 DOI: 10.1134/s0006297923090080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 09/30/2023]
Abstract
Structure of the chymosin gene of Siberian roe deer (Capreolus pygargus) was established for the first time and its exon/intron organization was determined. Coding part of the chymosin gene of C. pygargus was reconstructed by the Golden Gate method and obtained as a DNA clone. Comparative sequence analysis of the roe deer, cow, and one-humped camel prochymosins revealed a number of amino acid substitutions at the sites forming the substrate-binding cavity of the enzyme and affecting the S4 and S1' + S3' specificity subsites. Integration vector pIP1 was used to construct a plasmid pIP1-Cap in order to express recombinant roe deer prochymosin gene in CHO-K1 cells. CHO-K1-CYM-Cap pool cells were obtained, allowing synthesis and secretion of recombinant prochymosin into the culture fluid. As a result of zymogen activation, a recombinant roe deer chymosin was obtained and its total milk-clotting activity was estimated to be 468.4 ± 11.1 IMCU/ml. Yield of the recombinant roe deer chymosin was 500 mg/liter or ≈468,000 IMCU/liter, which exceeds the yields of genetically engineered chymosins in most of the expression systems used. Basic biochemical properties of the obtained enzyme were compared with the commercial preparations of recombinant chymosins from one-humped camel (Camelus dromedarius) and cow (Bos taurus). Specific milk-clotting activity of the recombinant chymosin of C. pygargus was 938 ± 22 IMCU/mg, which was comparable to that of the reference enzymes. Non-specific proteolytic activity of the recombinant roe deer chymosin was 1.4-4.5 times higher than that of the cow and camel enzymes. In terms of coagulation specificity, recombinant chymosin of C. pygargus occupied an intermediate position between the genetically engineered analogs of B. taurus and C. dromedarius chymosins. Thermostability threshold of the recombinant roe deer chymosin was 55°C. At 60°C, the enzyme retained <1% of its initial milk-clotting activity, and its complete thermal inactivation was observed at 65°C.
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Affiliation(s)
- Denis E Murashkin
- State Research Center of Virology and Biotechnology VECTOR, Koltsovo, 630559, Russia
| | - Svetlana V Belenkaya
- State Research Center of Virology and Biotechnology VECTOR, Koltsovo, 630559, Russia.
- Novosibirsk State University, Novosibirsk, 630090, Russia
| | - Aleksandr A Bondar
- Genomics Core Facility, Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - Vadim V Elchaninov
- Federal Altaic Scientific Center of Agrobiotechnology, Barnaul, 656910, Russia
| | - Dmitrii N Shcherbakov
- State Research Center of Virology and Biotechnology VECTOR, Koltsovo, 630559, Russia
- Altai State University, Barnaul, 656049, Russia
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Akishev Z, Aktayeva S, Kiribayeva A, Abdullayeva A, Baltin K, Mussakhmetov A, Tursunbekova A, Ramankulov Y, Khassenov B. Obtaining of Recombinant Camel Chymosin and Testing Its Milk-Clotting Activity on Cow's, Goat's, Ewes', Camel's and Mare's Milk. BIOLOGY 2022; 11:1545. [PMID: 36358248 PMCID: PMC9687658 DOI: 10.3390/biology11111545] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 10/29/2023]
Abstract
In the cheese-making industry, commonly chymosin is used as the main milk-clotting enzyme. Bactrian camel (Camelus bactrianus) chymosin (BacChym) has a milk-clotting activity higher than that of calf chymosin for cow's, goat's, ewes', mare's and camel's milk. A procedure for obtaining milk-clotting reagent based on recombinant camel chymosin is proposed here. Submerged fermentation by a recombinant yeast (Pichia pastoris GS115/pGAPZαA/ProchymCB) was implemented in a 50 L bioreactor, and the recombinant camel chymosin was prepared successfully. The activity of BacChym in yeast culture was 174.5 U/mL. The chymosin was concentrated 5.6-fold by cross-flow ultrafiltration and was purified by ion exchange chromatography. The activity of the purified BacChym was 4700 U/mL. By sublimation-drying with casein peptone, the BacChym powder was obtained with an activity of 36,000 U/g. By means of this chymosin, cheese was prepared from cow's, goat's, ewes', camel's and mare's milk with a yield of 18%, 17.3%, 15.9%, 10.4% and 3%, respectively. Thus, the proposed procedure for obtaining a milk-clotting reagent based on BacChym via submerged fermentation by a recombinant yeast has some prospects for biotechnological applications. BacChym could be a prospective milk-clotting enzyme for different types of milk and their mixtures.
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Affiliation(s)
- Zhiger Akishev
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
- Faculty of Natural Sciences, L.N. Gumilyev Eurasian National University, 2 Kanysh Satpayev Street, Nur-Sultan 010008, Kazakhstan
| | - Saniya Aktayeva
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Assel Kiribayeva
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Aliya Abdullayeva
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Kairat Baltin
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Arman Mussakhmetov
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Annelya Tursunbekova
- Corporate Development and Strategy Department, S. Seifullin Kazakh Agro Technical University, 62 Zhenis Avenue, Nur-Sultan 010001, Kazakhstan
| | - Yerlan Ramankulov
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
| | - Bekbolat Khassenov
- National Center for Biotechnology, 13/5 Korgalzhyn Road, Nur-Sultan 010000, Kazakhstan
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Balabova DV, Rudometov AP, Belenkaya SV, Belov AN, Koval AD, Bondar AA, Bakulina AY, Rukhlova EA, Elchaninov VV, Shcherbakov DN. Biochemical and technological properties of moose (<i>Alces alces</i>) recombinant chymosin. Vavilovskii Zhurnal Genet Selektsii 2022; 26:240-249. [PMID: 35774365 PMCID: PMC9167822 DOI: 10.18699/vjgb-22-31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/19/2022] [Accepted: 03/03/2022] [Indexed: 11/19/2022] Open
Abstract
Recombinant chymosins (rСhns) of the cow and the camel are currently considered as standard milk coagulants for cheese-making. The search for a new type of milk-clotting enzymes that may exist in nature and can surpass the existing “cheese-making” standards is an urgent biotechnological task. Within this study, we for the first time constructed an expression vector allowing production of a recombinant analog of moose chymosin in the expression system of Escherichia coli (strain SHuffle express). We built a model of the spatial structure of moose chymosin and compared the topography of positive and negative surface charges with the correspondent structures of cow and camel chymosins. We found that the distribution of charges on the surface of moose chymosin has common features with that of cow and camel chymosins. However, the moose enzyme carries a unique positively charged patch, which is likely to affect its interaction with the substrate. Biochemical and technological properties of the moose rChn were studied. Commercial rСhns of cow and camel were used as comparison enzymes. In some technological parameters, the moose rChn proved to be superior to the reference enzymes. Сompared with the cow and camel rСhns, the moose chymosin specific activity is less dependent on the changes in CaCl2 concentration in the range of 1–5 mM and pH in the range of 6–7, which is an attractive technological property. The total proteolytic activity of the moose rСhn occupies an intermediate position between the rСhns of cow and camel. The combination of biochemical and technological properties of the moose rСhn argues for further study of this enzyme.
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Affiliation(s)
| | - A. P. Rudometov
- State Research Center of Virology and Biotechnology “Vector”
| | - S. V. Belenkaya
- Altai State University; State Research Center of Virology and Biotechnology “Vector”; Novosibirsk State University
| | - A. N. Belov
- Federal Altai Scientific Center for Agrobiotechnology, Siberian Research Institute of Cheese-Making
| | - A. D. Koval
- Federal Altai Scientific Center for Agrobiotechnology, Siberian Research Institute of Cheese-Making
| | - A. A. Bondar
- Institute of Chemical Biology and Fundamental Medicine of the Siberian Branch of the Russian Academy of Sciences
| | - A. Yu. Bakulina
- State Research Center of Virology and Biotechnology “Vector”; Novosibirsk State University
| | - E. A. Rukhlova
- State Research Center of Virology and Biotechnology “Vector”
| | - V. V. Elchaninov
- Federal Altai Scientific Center for Agrobiotechnology, Siberian Research Institute of Cheese-Making
| | - D. N. Shcherbakov
- Altai State University; State Research Center of Virology and Biotechnology “Vector”
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Challenging Sustainable and Innovative Technologies in Cheese Production: A Review. Processes (Basel) 2022. [DOI: 10.3390/pr10030529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
It is well known that cheese yield and quality are affected by animal genetics, milk quality (chemical, physical, and microbiological), production technology, and the type of rennet and dairy cultures used in production. Major differences in the same type of cheese (i.e., hard cheese) are caused by the rennet and dairy cultures, which affect the ripening process. This review aims to explore current technological advancements in animal genetics, methods for the isolation and production of rennet and dairy cultures, along with possible applications of microencapsulation in rennet and dairy culture production, as well as the challenge posed to current dairy technologies by the preservation of biodiversity. Based on the reviewed scientific literature, it can be concluded that innovative approaches and the described techniques can significantly improve cheese production.
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Filkin SY, Chertova NV, Zatsepin SS, Sadykhov EG, Fedorov AN, Lipkin AV. Production of Beluga Whale (Delphinapterus leucas) Chymosin in the Methylotrophic Yeast Komagataella phaffii and Characteristics of the Recombinant Enzyme. APPL BIOCHEM MICRO+ 2021. [DOI: 10.1134/s0003683821030029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Akishev Z, Kiribayeva A, Mussakhmetov A, Baltin K, Ramankulov Y, Khassenov B. Constitutive expression of Camelus bactrianus prochymosin B in Pichia pastoris. Heliyon 2021; 7:e07137. [PMID: 34113734 PMCID: PMC8170492 DOI: 10.1016/j.heliyon.2021.e07137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/14/2021] [Accepted: 05/20/2021] [Indexed: 11/30/2022] Open
Abstract
Camel chymosin can be efficiently employed to produce cheese. Traditionally the rennet enzyme produced by the glands of the fourth stomach of ruminant animals (abomassum) is used in cheese making. Full-length Camelus bactrianus (Bactrian camel) prochymosin gene was synthesized and constitutively expressed in Pichia pastoris cells under glyceraldehydes-3-phosphate dehydrogenase (GAP) promoter. It was purified by sequential anion and cation exchange chromatography. SDS-PAGE analysis resulted in two bands, approximately 42 and 35 kDa. The 42 kDa band vanished when the sample was treated with endoglycosidase H, indicating that the recombinant protein is partially glycosylated. Optimal pH for the activity of the highest-purity recombinant chymosin was pH 4.5 for cow's milk and pH 4.0 for mare's milk. The range 45–50 °C and 70 °C for cow's and mare's milk types, respectively, was found to be the most appropriate for maximal relative milk-clotting activity. Concentration of CaCl2 that ensured the stability of the chymosin milk-clotting activity was between 20 and 50 mM with an optimum at 30 mM. Milk-clotting activity of camel recombinant chymosin and ability to make curd was successfully tested on fresh mare's milk. Pichia pastoris strain with integrated camel chymosin gene showed high productivity of submerged fermentation in bioreactor with milk-clotting activity 1412 U/mL and 80 mg/L enzyme yield. These results suggest that the constitutive expression of the camel chymosin Camelus bactrianus in the yeast Pichia pastoris has good prospects for practical applications.
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Affiliation(s)
- Zhiger Akishev
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
- L.N.Gumilyov Eurasian National University, 2 Kanysh Satpayev Street, Nur-Sultan, 010008, Kazakhstan
| | - Assel Kiribayeva
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
- L.N.Gumilyov Eurasian National University, 2 Kanysh Satpayev Street, Nur-Sultan, 010008, Kazakhstan
| | - Arman Mussakhmetov
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
| | - Kairat Baltin
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
| | - Yerlan Ramankulov
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
| | - Bekbolat Khassenov
- National Center for Biotechnology, 13/5 Kurgalzhynskoye Road, Nur-Sultan, 010000, Kazakhstan
- Corresponding author.
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9
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Ali Hanoğlu S, Ektiren D, Karaaslan M. Recombinant expression and characterization of Oryctolagus cuniculus chymosin in Komagataella phaffii (Pichia pastoris). Protein Expr Purif 2021; 183:105874. [PMID: 33744413 DOI: 10.1016/j.pep.2021.105874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/31/2021] [Accepted: 03/10/2021] [Indexed: 11/19/2022]
Abstract
This study was conducted for investigating expression and enzymatic characteristics of recombinant Oryctolagus cuniculus chymosin (ROCC) expressed in Pichia pastoris. SDS-PAGE of partially purified supernatant displayed two distinct molecular bands approximately at the sizes of 40 kDa and 45 kDa corresponding to chymosin and partially glycosylated chymosin, respectively. Proteolysis assay demonstrated that rabbit chymosin was more specific compared to bovine and camel chymosins when it comes to hydrolyzing α, β, and κ-casein. Rabbit chymosin kept its stability in a wide pH range (3.0-6.0) at 37 °C for 8 h. Active chymosin exhibited maximum enzymatic activity at 40 °C and pH 4.0 with the addition of 75 mM CaCl2. The ROCC clotting activity on donkey, cow, goat, lamb, camel milk was determined as 40, 10, 5.7, 3.07, and 2.66 IMCU/mL, respectively. These results revealed that ROCC might possess a potential for incorporation into cheese manufacture technology as a milk-clotting enzyme.
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Affiliation(s)
- Selin Ali Hanoğlu
- Harran University, Engineering Faculty, Food Engineering Department, Sanliurfa, Turkey
| | - Demet Ektiren
- Harran University, Engineering Faculty, Food Engineering Department, Sanliurfa, Turkey
| | - Mehmet Karaaslan
- Harran University, Engineering Faculty, Food Engineering Department, Sanliurfa, Turkey.
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Belenkaya SV, Bondar AA, Kurgina TA, Elchaninov VV, Bakulina AY, Rukhlova EA, Lavrik OI, Ilyichev AA, Shcherbakov DN. Characterization of the Altai Maral Chymosin Gene, Production of a Chymosin Recombinant Analog in the Prokaryotic Expression System, and Analysis of Its Several Biochemical Properties. BIOCHEMISTRY (MOSCOW) 2021; 85:781-791. [PMID: 33040722 DOI: 10.1134/s0006297920070068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
For the first time, the chymosin gene (CYM) of a maral was characterized. Its exon/intron organization was established using comparative analysis of the nucleotide sequence. The CYM mRNA sequence encoding a maral preprochymosin was reconstructed. Nucleotide sequence of the CYM maral mRNA allowed developing an expression vector to ensure production of a recombinant enzyme. Recombinant maral prochymosin was obtained in the expression system of Escherichia coli [strain BL21 (DE3)]. Total milk-coagulation activity (MCA) of the recombinant maral chymosin was 2330 AU/ml. The recombinant maral prochymosin relative activity was 52955 AU/mg. The recombinant maral chymosin showed 100-81% MCA in the temperature range 30-50°C, thermal stability (TS) threshold was 50°C, and the enzyme was completely inactivated at 70°C. Preparations of the recombinant chymosin of a single-humped camel and recombinant bovine chymosin were used as reference samples. Michaelis-Menten constant (Km), turnover number (kcat), and catalytic efficiency (kcat/Km) of the recombinant maral chymosin, were 1.18 ± 0.1 µM, 2.68 ± 0.08 s-1 and 2.27± 0.10 µm M-1·s-1, respectively.
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Affiliation(s)
- S V Belenkaya
- State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk Region, 630559, Russia. .,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - A A Bondar
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - T A Kurgina
- Novosibirsk State University, Novosibirsk, 630090, Russia.,Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - V V Elchaninov
- Federal Altai Scientific Center of Agrobiotechnologies, Siberian Research Institute of Cheese Making, Barnaul, 656910, Russia
| | - A Yu Bakulina
- State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk Region, 630559, Russia.,Novosibirsk State University, Novosibirsk, 630090, Russia
| | - E A Rukhlova
- Novosibirsk State University, Novosibirsk, 630090, Russia
| | - O I Lavrik
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - A A Ilyichev
- State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk Region, 630559, Russia
| | - D N Shcherbakov
- State Research Center of Virology and Biotechnology "Vector", Koltsovo, Novosibirsk Region, 630559, Russia.,Altai State University, Barnaul, 656049, Russia
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11
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Belenkaya SV, Shcherbakov DN, Balabova DV, Belov AN, Koval AD, Elchaninov VV. Production of Maral (Cervus elaphus sibiricus Severtzov) Recombinant Chymosin in the Prokaryotic Expression System and the Study of the Aggregate of Its Biochemical Properties Relevant for the Cheese-Making Industry. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820060034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Belenkaya SV, Balabova DV, Belov AN, Koval AD, Shcherbakov DN, Elchaninov VV. Basic Biochemical Properties of Recombinant Chymosins (Review). APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820040031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Abd Latip MA, Abdul Hamid AA, Nordin NFH. Microbial hydrolytic enzymes: In silico studies between polar and tropical regions. POLAR SCIENCE 2019; 20:9-18. [DOI: 10.1016/j.polar.2019.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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