Bacterial extremo-α-carbonic anhydrases from deep-sea hydrothermal vents as potential biocatalysts for CO2 sequestration

Jo, Byung Hoon; Seo, Jeong Hyun; Joon, Hyung

doi:10.1016/j.molcatb.2014.08.002

Cited by 46 publications

(59 citation statements)

References 43 publications

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“…At pH 7, zinc binds strongly in the active site, having an estimated dissociation constant of 4 pM; however, certain chelating agents such as 1,10-phenanthroline or dipicolinate can be used to extract zinc, causing enzyme inactivation. 117,180 In both AoCA and SspCA, the active sites point away from the dimer interface. The drastic decline in hCAII activity observed at low pH (pH < 4.5) has also been attributed to loss of zinc.…”

Section: Alpha-casmentioning

confidence: 99%

“…182 The trimeric native molecule has an approximately cylindrical shape with approximate dimensions 6.5 Â 6.5 Â 7.0 nm. 212 With its ability to retain activity at temperatures around 70 C, Cam was the original thermostable CA, but has now been surpassed by the exciting extremophile CA discoveries in the a-family 99,179,180,117 ( Figure 6). 236 The typical Zn(II) can also be replaced with Co(II).…”

Section: Gamma-casmentioning

confidence: 99%

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Enzyme-catalyzed Solvents for CO2 Separation

Salmon

House

2015

Novel Materials for Carbon Dioxide Mitigation Technology

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Section: Alpha-casmentioning

confidence: 99%

Section: Gamma-casmentioning

confidence: 99%

Enzyme-catalyzed Solvents for CO2 Separation

Salmon

House

2015

Novel Materials for Carbon Dioxide Mitigation Technology

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“…Recently, several studies using thermophilic CA from hyperthermophilic bacteria exhibited high stability at high temperature even for long-term periods [31,32] indicating promising application of thermostable CA for effective CO 2 capture from hot flue gases.…”

Section: Resultsmentioning

confidence: 99%

Carbon dioxide capture usingEscherichia coliexpressing carbonic anhydrase in a foam bioreactor

Watson

Han

et al. 2016

Environmental Technology

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The present study reports CO2 capture and conversion to bicarbonate using Escherichia coli expressing carbonic anhydrase (CA) on its cell surface in a novel foam bioreactor. The very large gas-liquid interfacial area in the foam bioreactor promoted rapid CO2 absorption while the CO2 in the aqueous phase was subsequently converted to bicarbonate ions by the CA. CO2 gas removal in air was investigated at various conditions such as gas velocity, cell density and CO2 inlet concentration. Regimes for kinetic and mass transfer limitations were defined. Very high removal rates of CO2 were observed: 9570 g CO2 m(-3) bioreactor h(-1) and a CO2 removal efficiency of 93% at 4% inlet CO2 when the gas retention time was 24 s, and cell concentration was 4 gdw L(-1). These performances are superior to earlier reports of experimental bioreactors using CA for CO2 capture. Overall, this bioreactor system has significant potential as an alternative CO2 capture technology.

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“…Thermophilic bacterial and archaeal CAs were also reported from Aquificae and Euryaracheota. a-CAs were also investigated from Presephonella marina and Thermovibrio ammonificans and b-CA from Methanobacterium thermoautotrophicum which have thermostability up to 75°C (Smith and Ferry 1999;Jo et al 2014). Potent thermostable CA includes a-CA from Sulfurihydrogenibium yellowstonenes YO3AOP1 with stability at 100°C up to 50 h upon immobilization and Sulfurihydrogenibium azorense with stability up to 100°C (Capasso et al 2012;Luca et al 2013).…”

Section: Development In Ca-based Mineralization and Phylogenetic Distmentioning

confidence: 99%

Trends, application and future prospectives of microbial carbonic anhydrase mediated carbonation process for CCUS

2017

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Summary Growing industrialization and the desire for a better economy in countries has accelerated the emission of greenhouse gases (GHGs), by more than the buffering capacity of the earth's atmosphere. Among the various GHGs, carbon dioxide occupies the first position in the anthroposphere and has detrimental effects on the ecosystem. For decarbonization, several non‐biological methods of carbon capture, utilization and storage (CCUS) have been in use for the past few decades, but they are suffering from narrow applicability. Recently, CO2 emission and its disposal related problems have encouraged the implementation of bioprocessing to achieve a zero waste economy for a sustainable environment. Microbial carbonic anhydrase (CA) catalyses reversible CO2 hydration and forms metal carbonates that mimic the natural phenomenon of weathering/carbonation and is gaining merit for CCUS. Thus, the diversity and specificity of CAs from different micro‐organisms could be explored for CCUS. In the literature, more than 50 different microbial CAs have been explored for mineral carbonation. Further, microbial CAs can be engineered for the mineral carbonation process to develop new technology. CA driven carbonation is encouraging due to its large storage capacity and favourable chemistry, allowing site‐specific sequestration and reusable product formation for other industries. Moreover, carbonation based CCUS holds five‐fold more sequestration capacity over the next 100 years. Thus, it is an eco‐friendly, feasible, viable option and believed to be the impending technology for CCUS. Here, we attempt to examine the distribution of various types of microbial CAs with their potential applications and future direction for carbon capture. Although there are few key challenges in bio‐based technology, they need to be addressed in order to commercialize the technology.

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Bacterial extremo-α-carbonic anhydrases from deep-sea hydrothermal vents as potential biocatalysts for CO2 sequestration

Cited by 46 publications

References 43 publications

Enzyme-catalyzed Solvents for CO2 Separation

Enzyme-catalyzed Solvents for CO2 Separation

Carbon dioxide capture usingEscherichia coliexpressing carbonic anhydrase in a foam bioreactor

Trends, application and future prospectives of microbial carbonic anhydrase mediated carbonation process for CCUS

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