Inteins are mobile genetic elements that apply standard enzymatic strategies to excise themselves post-translationally from the precursor protein via protein splicing. Since their discovery in the 1990s, recent advances in intein technology allow for them to be implemented as a modern biotechnological contrivance. Radical improvement in the structure and catalytic framework of cis- and trans-splicing inteins devised the development of engineered inteins that contribute to various efficient downstream techniques. Previous literature indicates that implementation of intein-mediated splicing has been extended to in vivo systems. Besides, the homing endonuclease domain also acts as a versatile biotechnological tool involving genetic manipulation and control of monogenic diseases. This review orients the understanding of inteins by sequentially studying the distribution and evolution pattern of intein, thereby highlighting a role in genetic mobility. Further, we include an in-depth summary of specific applications branching from protein purification using self-cleaving tags to protein modification, post-translational processing and labelling, followed by the development of intein-based biosensors. These engineered inteins offer a disruptive approach towards research avenues like biomaterial construction, metabolic engineering and synthetic biology. Therefore, this linear perspective allows for a more comprehensive understanding of intein function and its diverse applications.
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COVID-19 remains a matter of global public health concern. Previous research suggested the association between local environmental factors and viral transmission. We present a multivariate observational analysis of SARS-CoV-2 transmission in the state of Odisha, India, hinting at a seasonal activity. We aim to investigate the demographic characteristics of COVID-19 in the Indian state of Odisha for two specific timelines in 2020 and 2021. For a comparative outlook, we chose similar datasets from the state of New York, USA. Further, we present a critical analysis pertaining to the effects of environmental factors and the emergence of variants on SARS-CoV-2 transmission and persistence. We assessed the datasets for confirmed cases, death, age, and gender for 29 February 2020 to 31 May 2020, and 1 March 2021 to 31 May 2021. We determined the case fatalities, crude death rates, sex ratio, and incidence rates for both states along with monthly average temperature analysis. A yearlong epi-curve analysis was conducted to depict the coronavirus infection spread pattern in the respective states. The Indian state of Odisha reported a massive 436,455 confirmed cases and 875 deaths during the 2021 timeline as compared to a mere 2223 cases and 7 deaths during the 2020 timeline. We further discuss the demographic and temperature association of SARS-CoV-2 transmission during early 2020 and additionally comment on the variant-associated massive rise in cases during 2021. Along with the rapid rise of variants, the high population density and population behavior seem to be leading causes for the 2021 pandemic, whereas factors such as age group, gender, and average local temperature were prominent during the 2020 spread. A seasonal occurrence of SARS-CoV-2 transmission is also observed from the yearlong epidemiological plot. The recent second wave of COVID-19 is a lesson that emphasizes the significance of continuous epidemiological surveillance to predict the relative risk of viral transmission for a specific region.
Graphene research has progressed at an unprecedented rate since 2004 when Novoselov and Geim isolated and described a single sheet of graphene. In fact, the relentless progress in graphene literature over the past decades makes it challenging to diversify research efforts in varied directions. The superior optical, electrical, thermal, and mechanical properties of graphene usher in a broad spectrum of applications that attracts the interest of various scientific domains, including material scientists, physicists, chemists, and biologists. These exceptional properties of the graphene family of materials (Gfam) have inspired researchers to explore a cornucopia of potential applications surrounding graphene and its derivatives in the realm of bacterial, fungal, and viral cells. Herein, we provide an exhaustive discussion of the antimicrobial mechanism of Gfam against different pathogen types: bacteria, fungi, and viruses. In addition, we present the physicochemical differences among members of Gfam and the correlation of their germicidal activities to material properties. A comparative analysis of Gfam's activities pertaining to bare metals and the enhanced broad-spectrum antimicrobial action of graphene family-based nanocomposites as well as surface coatings are also described. The review analyzes and discusses the present constraints and anticipated future directions that would enable graphene-based nanomaterials to advance as high-performance antimicrobial structures. Thus, Gfam as a robust biocidal material of interest can effectively bridge the gap between academia and industry.
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