Aliarcobacter butzleri is an emerging foodborne and zoonotic pathogen, yet many of its encoded proteins remain functionally uncharacterized. This lack of annotation limits understanding of its molecular mechanisms and hampers the identification of novel therapeutic targets. In this study, we systematically performed functional annotation of essential hypothetical proteins from the BNI-3166 strain using an integrative-in-silico approach to uncover potential drug and vaccine candidates. 2,367 protein-coding sequences were retrieved from the RefSeq database and were identified 356 as hypothetical proteins. Using BLASTp, we screened these HPs against the Database of Essential Genes and the human proteome to identify essential non-homologous proteins, resulting in 20 ENH candidates. Functional annotation was performed using several domain-based databases, including Pfam, InterPro, SMART, and SUPERFAMILY. Subsequently, physicochemical properties were analyzed and predicted subcellular localization using PSORTb and CELLO. To assess druggability, the ChEMBL database was used. Virulence factors using VFDB, VICMpred, and VirulentPred 2.0 were also predicted. Gene Ontology annotations were generated via ARGOT2.5. Furthermore, we explored protein-protein interactions using STRING and predicted tertiary structures with AlphaFold3. Moreover, Ligand binding pockets were predicted using PrankWeb, and antigenicity of vaccine candidates was assessed using VaxiJen v2.0. We identified 20 essential non-homologous hypothetical proteins, of which 10 were confidently annotated based on conserved domain analysis. These proteins were classified as enzymes, binding proteins, transporters, regulatory proteins, and potential virulence factors. Among them, eight exhibited characteristics of promising drug targets, while two showed potential as vaccine candidates based on subcellular localization. Druggability analysis revealed that nine proteins had no similarity to known drug targets, suggesting novel therapeutic potential. Predicted 3D structures generated using AlphaFold3 yielded pTM scores ranging from 0.44 to 0.92, indicating acceptable to high modeling confidence. Ligand binding site analysis confirmed druggability in six candidates, and antigenicity screening identified one protein as a potential vaccine target. This study provides a computational framework for identifying functionally important proteins in A. butzleri BNI-3166 and highlights novel therapeutic candidates for experimental validation, offering new directions in drug and vaccine development against this underexplored pathogen.
Key words: Aliarcobacter butzleri, Drug Target Identification, Functional Annotation, Hypothetical Proteins, In Silico Analysis
Received: 08.07.2025; Accepted: 01.09.2025; Early view: 24.09.2025 Published: 10.01.2026
DOI: 10.62063/ecb-66
Citation: Paul, S., Barua, S., & Barua, J.D. (2026). In-silico functional annotation and structural characterization of hypothetical proteins from Aliarcobacter butzleri BNI-3166: Insights into novel virulence and drug targets. The European chemistry and biotechnology journal, 5, 22-39. https://doi.org/10.62063/ecb-66
The copyrights of the studies published in The European Chemistry and Biotechnology Journal (EUCHEMBIOJ) belong to their authors
This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)(https://creativecommons.org/licenses/by-nc/4.0/).
The reception of Tamil Kama videos varies widely depending on individual perspectives and cultural backgrounds. Some people view these videos as a form of harmless entertainment, while others may raise concerns about their potential impact on social values and relationships.
The term "Tamil Kama Videos" has gained significant attention in recent years, particularly among those interested in exploring the intersection of culture, language, and digital media. For those unfamiliar with the term, "Kama" refers to one of the four goals of human life in Hinduism, which translates to "pleasure" or "desire." When paired with "Tamil," it suggests a focus on content created for or by the Tamil-speaking community, often related to themes of love, relationships, and intimacy.
: For Tamil-speaking audiences, these videos offer a sense of familiarity and connection to their cultural roots. The use of Tamil language and cultural references makes the content more relatable and engaging.
The popularity of Tamil kama videos can also be linked to the broader trend of Indian audiences seeking out local language content. With the rise of regional streaming platforms and the growing demand for vernacular content, creators have begun to cater to these needs, producing material that is both locally relevant and appealing to niche audiences.
The more Karthik watched, the more he became captivated by their love story. The film seemed to capture not just the grand gestures of love but the quiet moments, the glances, the touches, and the unspoken words. It was as if the filmmakers had managed to bottle the essence of love and pour it onto the screen.
Websites and social media platforms have become essential channels for distributing Tamil kama videos, with many creators leveraging these platforms to showcase their work and connect with their audience. Some popular platforms for hosting and sharing Tamil kama videos include YouTube, Vimeo, and various regional online forums.
: Human sexual interests are diverse and complex. Tamil kama videos cater to a specific niche, providing content that might not be readily available in other languages or cultural contexts.
As the phenomenon continues to evolve, it is essential to engage in nuanced discussions about the implications of Tamil kama videos and the role of regulation, censorship, and social responsibility in shaping the future of adult content in India. Ultimately, a balanced approach that prioritizes both individual freedom and social responsibility will be essential in navigating the challenges and opportunities presented by the growth of Tamil kama videos.
: Users often find it easier to express intimate or explicit thoughts by mixing languages, creating a more "relatable" atmosphere.
: In India, Section 67 of the Information Technology Act prohibits the publication or transmission of "obscene" material in electronic form. This has led to frequent bans on websites and social media groups hosting such content.
Tamil Nadu, a state in southern India, boasts a rich cultural heritage, with a history dating back to the ancient Dravidian civilization. The region is renowned for its vibrant traditions, including its unique brand of music, dance, literature, and art. Tamil Nadu's cultural landscape is also characterized by a strong emphasis on spirituality, philosophy, and the pursuit of pleasure.
The increasing popularity of Tamil kama videos has sparked debates about their impact on society and culture. Some argue that these videos perpetuate negative stereotypes, objectify women, and contribute to the normalization of explicit content. Others see them as a harmless form of entertainment, a way for individuals to express themselves and explore their desires in a consensual and safe environment.
The rise of Tamil kama videos has also had an impact on Tamil cinema and culture. Some argue that the popularity of these videos has led to a shift in the types of films being produced, with some filmmakers incorporating more explicit content or adopting a more sensationalist approach to storytelling.
If you delete all of your shared links, no one can see the content inside them anymore. If you delete a link, you'll still have access to the thread in your AI Mode history. Learn more Can't delete the links right now. Try again later. You don't have any shared links yet.
The reception of Tamil Kama videos varies widely depending on individual perspectives and cultural backgrounds. Some people view these videos as a form of harmless entertainment, while others may raise concerns about their potential impact on social values and relationships.
The term "Tamil Kama Videos" has gained significant attention in recent years, particularly among those interested in exploring the intersection of culture, language, and digital media. For those unfamiliar with the term, "Kama" refers to one of the four goals of human life in Hinduism, which translates to "pleasure" or "desire." When paired with "Tamil," it suggests a focus on content created for or by the Tamil-speaking community, often related to themes of love, relationships, and intimacy.
: For Tamil-speaking audiences, these videos offer a sense of familiarity and connection to their cultural roots. The use of Tamil language and cultural references makes the content more relatable and engaging.
The popularity of Tamil kama videos can also be linked to the broader trend of Indian audiences seeking out local language content. With the rise of regional streaming platforms and the growing demand for vernacular content, creators have begun to cater to these needs, producing material that is both locally relevant and appealing to niche audiences. tamil kama videos
The more Karthik watched, the more he became captivated by their love story. The film seemed to capture not just the grand gestures of love but the quiet moments, the glances, the touches, and the unspoken words. It was as if the filmmakers had managed to bottle the essence of love and pour it onto the screen.
Websites and social media platforms have become essential channels for distributing Tamil kama videos, with many creators leveraging these platforms to showcase their work and connect with their audience. Some popular platforms for hosting and sharing Tamil kama videos include YouTube, Vimeo, and various regional online forums.
: Human sexual interests are diverse and complex. Tamil kama videos cater to a specific niche, providing content that might not be readily available in other languages or cultural contexts. The reception of Tamil Kama videos varies widely
As the phenomenon continues to evolve, it is essential to engage in nuanced discussions about the implications of Tamil kama videos and the role of regulation, censorship, and social responsibility in shaping the future of adult content in India. Ultimately, a balanced approach that prioritizes both individual freedom and social responsibility will be essential in navigating the challenges and opportunities presented by the growth of Tamil kama videos.
: Users often find it easier to express intimate or explicit thoughts by mixing languages, creating a more "relatable" atmosphere.
: In India, Section 67 of the Information Technology Act prohibits the publication or transmission of "obscene" material in electronic form. This has led to frequent bans on websites and social media groups hosting such content. For those unfamiliar with the term, "Kama" refers
Tamil Nadu, a state in southern India, boasts a rich cultural heritage, with a history dating back to the ancient Dravidian civilization. The region is renowned for its vibrant traditions, including its unique brand of music, dance, literature, and art. Tamil Nadu's cultural landscape is also characterized by a strong emphasis on spirituality, philosophy, and the pursuit of pleasure.
The increasing popularity of Tamil kama videos has sparked debates about their impact on society and culture. Some argue that these videos perpetuate negative stereotypes, objectify women, and contribute to the normalization of explicit content. Others see them as a harmless form of entertainment, a way for individuals to express themselves and explore their desires in a consensual and safe environment.
The rise of Tamil kama videos has also had an impact on Tamil cinema and culture. Some argue that the popularity of these videos has led to a shift in the types of films being produced, with some filmmakers incorporating more explicit content or adopting a more sensationalist approach to storytelling.
If you delete all of your shared links, no one can see the content inside them anymore. If you delete a link, you'll still have access to the thread in your AI Mode history. Learn more Can't delete the links right now. Try again later. You don't have any shared links yet.