| Description | Desulfovibrio alaskensis is a Gram-negative, vibrioid-shaped microbe that thrives in a temperature range of mesophilic, preferring temperatures between 10-30°C. This chemoheterotroph microbe obtains its energy by oxidizing organic compounds, specifically succinate, and reducing sulfur compounds, a process known as dissimilatory sulfate reduction. The energy is produced through the electron transport chain, which generates ATP. As a ubiquitous microbe, Desulfovibrio alaskensis can be found in various environments, including aquatic, soil, and gastrointestinal tracts of animals. However, its primary habitat is in the reducing environments of coastal sediments, oil fields, and freshwater lakes. It is an obligate anaerobe, meaning it cannot survive in the presence of oxygen, which is consistent with its ability to reduce sulfur compounds. The Gram-negative cell wall of Desulfovibrio alaskensis contains a double membrane-bound cytoplasmic space, a characteristic common among anaerobic bacteria. The vibrioid shape allows for efficient movement and colonization of surfaces. Despite being an anaerobe, D. alaskensis has been found to possess a complex electron transport chain, consisting of cytochromes,ferredoxins, and other electron carriers, which enables the oxidation of organic compounds and reduction of sulfur compounds. In terms of its role in the ecosystem, Desulfovibrio alaskensis plays a crucial part in sulfur cycling, as it reduces sulfur compounds to produce hydrogen sulfide, a key component of the microbial community. Additionally, its ability to thrive in anaerobic environments has led to its exploration as a potential candidate for bioremediation of contaminated soils and sediments. Most notably, Desulfovibrio alaskensis has been found to possess a unique cell surface protein called Desulfovibrio Alaskensis Surface Layer Protein (DASLP), which is involved in the adhesion and colonization of host surfaces. This protein has sparked significant interest in its potential applications in biotechnology and biomedical research. |
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