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/).
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Should I focus more on the or the product/technique ?
As the evening unfolds, Lilu and Julia find themselves at a quaint, underground jazz club, where they meet a captivating musician named Max. The three of them strike up a conversation, bonding over their shared love of art and music. As the night wears on, Lilu finds herself drawn to Max's charismatic personality, while Julia is smitten with the club's owner, a free-spirited woman named Sophia.
Scene 6 — The Reveal Back home, she places the new oil under a lamp. The surface trembles and, for a breath, the room fills with a scent that is neither remembered nor new. Her eyes widen with recognition—not of a face but of a truth: some parts of people can be bottled but not owned. She sets the jar on a high shelf where sunlight draws a gold path across the label. Lilu Julia Oil 2 mp4
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Oil and lubricants have a wide range of applications across various industries, including: The internet has revolutionized the way we consume
: Sometimes, creators share their content on social media platforms. You can try searching there as well.
:
These come from animal sources, such as fish oil, which is rich in omega-3 fatty acids and used in dietary supplements. In this article, we'll explore the context behind
Please provide more details or clarify your request so I can assist you with the most relevant guide possible.
The phenomenon of Lilu Julia Oil 2 MP4, regardless of its specific nature, underscores the dynamic and often unpredictable nature of digital culture. It highlights how quickly a piece of content, or even a concept, can gain traction and spread across the internet, influencing trends and conversations.
If one were to view the file, key analytical axes would include:
If you can provide additional context — such as genre, director, country of origin, or year of release — I would be happy to help identify a legitimate equivalent or write a detailed article about that actual production.
The more context you can give—such as the subject matter of the video, the platform you’re using, or the specific problem you’re encountering—the better I can tailor a helpful guide for you.