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Sharker MR, Sukhan ZP, Sumi KR, Choi SK, Choi KS, Kho KH. Molecular Characterization of Carbonic Anhydrase II (CA II) and Its Potential Involvement in Regulating Shell Formation in the Pacific Abalone, Haliotis discus hannai. Front Mol Biosci 2021; 8:669235. [PMID: 34026840 PMCID: PMC8138131 DOI: 10.3389/fmolb.2021.669235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/14/2021] [Indexed: 12/31/2022] Open
Abstract
Carbonic anhydrases (CAs) are a family of metalloenzymes that can catalyze the reversible interconversion of CO2/HCO3–, ubiquitously present in both prokaryotes and eukaryotes. In the present study, a CA II (designated as HdhCA II) was sequenced and characterized from the mantle tissue of the Pacific abalone. The complete sequence of HdhCA II was 1,169 bp, encoding a polypeptide of 349 amino acids with a NH2-terminal signal peptide and a CA architectural domain. The predicted protein shared 98.57% and 68.59% sequence identities with CA II of Haliotis gigantea and Haliotis tuberculata, respectively. Two putative N-linked glycosylation motifs and two cysteine residues could potentially form intramolecular disulfide bond present in HdhCA II. The phylogenetic analysis indicated that HdhCA II was placed in a gastropod clade and robustly clustered with CA II of H. gigantea and H. tuberculata. The highest level of HdhCA II mRNA expression was detected in the shell forming mantle tissue. During ontogenesis, the mRNA of HdhCA II was detected in all stages, with larval shell formation stage showing the highest expression level. The in situ hybridization results detected the HdhCA II mRNA expression in the epithelial cells of the dorsal mantle pallial, an area known to express genes involved in the formation of a nacreous layer in the shell. This is the first report of HdhCA II in the Pacific abalone, and the results of this study indicate that this gene might play a role in the shell formation of abalone.
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Affiliation(s)
- Md Rajib Sharker
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea.,Department of Fisheries Biology and Genetics, Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Zahid Parvez Sukhan
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea
| | - Kanij Rukshana Sumi
- Department of Aquaculture, Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Sang Ki Choi
- Department of Biological Sciences, College of Life Industry and Science, Sunchon National University, Jeonnam, South Korea
| | - Kap Seong Choi
- Department of Food Science and Technology, Sunchon National University, Jeonnam, South Korea
| | - Kang Hee Kho
- Department of Fisheries Science, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu, South Korea
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Polishchuk OV. Stress-Related Changes in the Expression and Activity of Plant Carbonic Anhydrases. PLANTA 2021; 253:58. [PMID: 33532871 DOI: 10.1007/s00425-020-03553-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 12/23/2020] [Indexed: 05/17/2023]
Abstract
The data on stress-related changes in the expression and activity of plant carbonic anhydrases (CAs) suggest that they are generally upregulated at moderate stress severity. This indicates probable involvement of CAs in adaptation to drought, high salinity, heat, high light, Ci deficit, and excess bicarbonate. The changes in CA levels under cold stress are less studied and generally represented by the downregulation of CAs excepting βCA2. Excess Cd2+ and deficit of Zn2+ specifically reduce CA activity and reduce its synthesis. Probable roles of βCAs in stress adaptation include stomatal closure, ROS scavenging and partial compensation for decreased mesophyll CO2 conductance. βCAs play contrasting roles in pathogen responses, interacting with phytohormone signaling networks. Their role can be either negative or positive, probably depending on the host-pathogen system, pathogen initial titer, and levels of ·NO and ROS. It is still not clear why CAs are suppressed under severe stress levels. It should be noted, that the role of βCAs in the facilitation of CO2 diffusion and their involvement in redox signaling or ROS detoxication are potentially antagonistic, as they are inactivated by oxidation or nitrosylation. Interestingly, some chloroplastic βCAs may be relocated to the cytoplasm under stress conditions, but the physiological meaning of this effect remains to be studied.
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Affiliation(s)
- O V Polishchuk
- Membranology and Phytochemistry Department, M.G. Kholodny Institute of Botany of NAS of Ukraine, 2 Tereshchenkivska Str, Kyiv, 01004, Ukraine.
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Bi YH, Qiao YM, Wang Z, Zhou ZG. Identification and Characterization of a Periplasmic α-Carbonic Anhydrase (CA) in the Gametophytes of Saccharina japonica (Phaeophyceae). JOURNAL OF PHYCOLOGY 2021; 57:295-310. [PMID: 33128798 DOI: 10.1111/jpy.13091] [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: 11/07/2019] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
Periplasmic or external carbonic anhydrases (CAs) have been well accepted as playing a crucial role in the acquisition of dissolved inorganic carbon; however, no cytological evidence or molecular information on these enzymes has been reported in seaweeds to date. In this study, the full-length cDNA sequence coding for a putative periplasmic Sjα-CA2 was cloned from the gametophytes of Saccharina japonica, an industrial brown seaweed. It was 1,728 bp in length and included a 263-bp 5'-untranslated region (UTR), a 577-bp 3'-UTR, and an 888-bp open reading frame encoding a protein precursor consisting of 295 amino acids. The mature protein, after removal of a predicted 28-residue signal peptide, was composed of 267 amino acids with a relative molecular weight of 29.27 kDa. Multisequence alignment and phylogenetic analysis indicated that it was a member of the α-CA family. Enzyme activity assays showed that the recombinant Sjα-CA2 in Escherichia coli possessed CO2 hydration and esterase activities, thus identifying this gene Sjα-CA2 in function. Immunogold electron microscopic observations with the prepared anti-Sjα-CA2 polyclonal antibody illustrated that Sjα-CA2 was located in periplasmic space of the kelp gametophyte cells. Quantitative real-time PCR results revealed that the transcription of Sjα-CA2 was induced by elevated HCO 3 - levels, but it was little changed while the kelp gametophytes were subjected to elevated CO2 concentrations. This study suggests that the periplasmic Sjα-CA2 might play a role in adapting to elevated environmental levels of HCO 3 - by dehydration of HCO 3 - to generate CO2 , which could be readily taken up by S. japonica gametophytes.
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Affiliation(s)
- Yan-Hui Bi
- National Demonstration Center for the Experimental Teaching of Fisheries Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Ya-Ming Qiao
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Conferred by Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Zhen Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Conferred by Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
| | - Zhi-Gang Zhou
- International Research Center for Marine Biosciences Conferred by Ministry of Science and Technology, Shanghai Ocean University, Shanghai, 201306, China
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Isolation and Expression Analysis of Three Types of α-Carbonic Anhydrases from the Antarctic Alga Chlamydomonas sp. ICE-L under Different Light Stress Treatments. Mol Biotechnol 2019; 61:200-208. [PMID: 30649663 DOI: 10.1007/s12033-018-00152-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Carbonic anhydrases (CAs) are a class of zinc-containing metalloenzymes that can reversibly catalyse the hydration reaction of carbon dioxide. Antarctic algae are the most critical component of the Antarctic ecosystem; algae can enter the carbon cycle food chain by fixing carbon dioxide from the air. In this study, the complete open reading frames (ORFs) of CA1 (GenBank ID KY826431), CA2 (GenBank ID KY826432), and CA3 (GenBank ID KY826433), encoding CAs in the Antarctic ice microalga Chlamydomonas. sp. ICE-L, were successfully cloned using reverse transcription-polymerase chain reaction (RT-PCR). In addition, the expression patterns of CAs under blue light, under UV light, and in the dark were determined by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). The CA1, CA2, and CA3 ORFs encode proteins of 376, 430, and 419 amino acids, respectively. Phylogenetic analysis revealed that all amino acid sequences showed high homology with those of C. sp. ICE-L. There are six types of algal CAs; we hypothesised that the CAs studied here are most likely α-CAs. Expression analysis showed that the transcription level of the CAs was influenced by both UV light and blue light. These findings provide additional insight into the molecular mechanisms of CAs and will accelerate the development of CAs for applications in agriculture and environmental governance.
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Chen F, Jin W, Gao H, Guo Z, Lin H, Li J, Hu K, Guan X, Kalia VC, Lee JK, Zhang L, Li Y. Cloning, Expression and Characterization of Two Beta Carbonic Anhydrases from a Newly Isolated CO 2 Fixer, Serratia marcescens Wy064. Indian J Microbiol 2019; 59:64-72. [PMID: 30728632 DOI: 10.1007/s12088-018-0773-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 12/06/2018] [Indexed: 12/20/2022] Open
Abstract
Bacterial strains from karst landform soil were enriched via chemostat culture in the presence of sodium bicarbonate. Two chemolithotrophic strains were isolated and identified as Serratia marcescens Wy064 and Bacillus sp. Wy065. Both strains could grow using sodium bicarbonate as the sole carbon source. Furthermore, the supplement of the medium with three electron donors (Na2S, NaNO2, and Na2S2O3) improved the growth of both strains. The activities of carbonic anhydrase (CA) and ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) could be detected in the crude enzyme of strain Wy064, implying that the strain Wy064 might employ Calvin cycle to fix CO2. S. marcescens genome mining revealed four potential CA genes designated CA1-CA4. The proteins encoded by genes CA1-3 were cloned and expressed in Escherichia coli. The purified recombinant enzymes of CA1 and CA3 exhibited CO2 hydration activities, whereas enzyme CA2 was expressed in inclusion bodies. A CO2 hydration assay demonstrated that the specific activity of CA3 was significantly higher than that of CA1. The maximum CO2 hydration activities for CA1 and CA3 were observed at pH 7.5 and 40 °C. The activities of CA1 and CA3 were significantly enhanced by several metal ions, especially Zn2+, which resulted in 21.1-fold and 26.1-fold increases of CO2 hydration activities, respectively. The apparent K m and V max for CO2 as substrate were 27 mM and 179 WAU/mg for CA1, and 14 mM and 247 WAU/mg for CA3, respectively. Structure modeling combined with sequence analysis indicated that CA1 and CA3 should belong to the Type II β-CA.
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Affiliation(s)
- Fanbing Chen
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Wensong Jin
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Huifang Gao
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Zewang Guo
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Hui Lin
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Jiahuan Li
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Kaihui Hu
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Xiong Guan
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
| | - Vipin C Kalia
- 2Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Jung-Kul Lee
- 2Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Liaoyuan Zhang
- 1College of Life Sciences, Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
- 2Department of Chemical Engineering, Konkuk University, Seoul, 05029 Republic of Korea
| | - Yongyu Li
- 3College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002 People's Republic of China
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