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/).
: In many regions, high-speed unlimited broadband is either expensive or unavailable. A 480p file compresses an entire 45-minute television episode into roughly 150MB to 200MB, compared to an HD file which can easily exceed 1GB.
| Detail | Information | |--------|--------------| | | The Shannara Chronicles – Season 1 | | Format | 480 p (standard definition) | | Language | Hindi (dubbed) | | Source | Vegamovies (online distribution platform) | | Genre | Fantasy, Adventure, Drama | | Based on | “The Sword of Shannara” & “The Elfstones of Shannara” novels by Terry Gillian Brooks | | Main Cast | Austin Butler (Erevan), Poppy Drayton (Amberle), Manu Intiraymi (Allanon), Brandon Sklenar (Bren), among others | | Original Release | 2016‑2017 (U.S.) | | Number of Episodes | 13 (≈ 45 min each) | | Production | Filmation, New Line Television (Warner Bros.) |
: Refers to a Standard Definition (SD) display resolution (854x480 pixels). This format balances lower data consumption with acceptable playback quality on smaller mobile devices.
Overview, Plot Highlights, Themes, and Viewer Takeaways
: Please be aware that streaming copyrighted content from unauthorized sources may be illegal in your region. Always opt for official sources or legitimate streaming platforms to watch your favorite shows.
The file name trailed off in the slate’s memory: Vegamovies.N... Kael imagined it ended with “No limits.” Or maybe “Never forgotten.”
Beyond the legal issues, visiting websites like Vegamovies exposes you to serious digital threats:
For non-native English speakers, consuming these narratives in their primary language dramatically improves comprehension and engagement. Entertainment conglomerates recognize this trend and invest heavily in high-quality local voice casting, script translation, and audio mixing. When official platforms delay or restrict access to regional dubs in certain territories, users frequently turn to alternative online search strings to find those specific audio tracks. Third-Party Platforms and the Digital Ecosystem
Visually, the show is a distinct product of its time. Produced by the network behind Teen Wolf , it applies that same glossy, hyper-saturated filter to a fantasy setting. The Four Lands are lush and vibrant, leaning heavily into a "California redwood forest" vibe rather than the gritty, muddy realism of Game of Thrones , which was airing at the same time. This choice gives the show a lighter, more accessible feel, but it can also make the stakes feel somewhat lower despite the apocalyptic plot.
One of the standout features of is its diverse and complex cast of characters. The show follows a group of young heroes as they navigate the challenges of the post-apocalyptic world. The main characters include:
The Shannara Chronicles is a fantasy epic that has captivated audiences worldwide. With its rich mythology, complex characters, and epic storylines, it's no wonder that the show has become a staple of the genre. Whether you're a fan of the books or the television series, there's no denying the impact that The Shannara Chronicles has had on the world of fantasy. As the world of Shannara continues to evolve, one thing is certain: the legacy of The Shannara Chronicles will endure for generations to come.
The chemistry between the trio drives the emotional weight of the story. 4. The World of the Four Lands
The Last Broadcast
: Hosting or downloading copyrighted material via unofficial platforms violates intellectual property laws. Major television networks and production houses actively issue DMCA takedown notices for these types of file links.
: In many regions, high-speed unlimited broadband is either expensive or unavailable. A 480p file compresses an entire 45-minute television episode into roughly 150MB to 200MB, compared to an HD file which can easily exceed 1GB.
| Detail | Information | |--------|--------------| | | The Shannara Chronicles – Season 1 | | Format | 480 p (standard definition) | | Language | Hindi (dubbed) | | Source | Vegamovies (online distribution platform) | | Genre | Fantasy, Adventure, Drama | | Based on | “The Sword of Shannara” & “The Elfstones of Shannara” novels by Terry Gillian Brooks | | Main Cast | Austin Butler (Erevan), Poppy Drayton (Amberle), Manu Intiraymi (Allanon), Brandon Sklenar (Bren), among others | | Original Release | 2016‑2017 (U.S.) | | Number of Episodes | 13 (≈ 45 min each) | | Production | Filmation, New Line Television (Warner Bros.) |
: Refers to a Standard Definition (SD) display resolution (854x480 pixels). This format balances lower data consumption with acceptable playback quality on smaller mobile devices.
Overview, Plot Highlights, Themes, and Viewer Takeaways Shannara.Chronicles.S01.480p.Hindi.Vegamovies.N...
: Please be aware that streaming copyrighted content from unauthorized sources may be illegal in your region. Always opt for official sources or legitimate streaming platforms to watch your favorite shows.
The file name trailed off in the slate’s memory: Vegamovies.N... Kael imagined it ended with “No limits.” Or maybe “Never forgotten.”
Beyond the legal issues, visiting websites like Vegamovies exposes you to serious digital threats: : In many regions, high-speed unlimited broadband is
For non-native English speakers, consuming these narratives in their primary language dramatically improves comprehension and engagement. Entertainment conglomerates recognize this trend and invest heavily in high-quality local voice casting, script translation, and audio mixing. When official platforms delay or restrict access to regional dubs in certain territories, users frequently turn to alternative online search strings to find those specific audio tracks. Third-Party Platforms and the Digital Ecosystem
Visually, the show is a distinct product of its time. Produced by the network behind Teen Wolf , it applies that same glossy, hyper-saturated filter to a fantasy setting. The Four Lands are lush and vibrant, leaning heavily into a "California redwood forest" vibe rather than the gritty, muddy realism of Game of Thrones , which was airing at the same time. This choice gives the show a lighter, more accessible feel, but it can also make the stakes feel somewhat lower despite the apocalyptic plot.
One of the standout features of is its diverse and complex cast of characters. The show follows a group of young heroes as they navigate the challenges of the post-apocalyptic world. The main characters include: This format balances lower data consumption with acceptable
The Shannara Chronicles is a fantasy epic that has captivated audiences worldwide. With its rich mythology, complex characters, and epic storylines, it's no wonder that the show has become a staple of the genre. Whether you're a fan of the books or the television series, there's no denying the impact that The Shannara Chronicles has had on the world of fantasy. As the world of Shannara continues to evolve, one thing is certain: the legacy of The Shannara Chronicles will endure for generations to come.
The chemistry between the trio drives the emotional weight of the story. 4. The World of the Four Lands
The Last Broadcast
: Hosting or downloading copyrighted material via unofficial platforms violates intellectual property laws. Major television networks and production houses actively issue DMCA takedown notices for these types of file links.