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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Juan El Caballo Loco, whose real name is Juan Hernandez, was born on November 12, 1993, in Mexico. He gained a massive following on social media platforms like Instagram and YouTube for his entertaining and often hilarious content, which frequently features his outrageous antics, pranks, and challenges.
: Primarily known for her role on the British reality series Made in Chelsea , Watson has built a brand around lifestyle, veganism, and fitness.
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Because the original source is lost, forums like and Vintage Fashion Guild are constantly fielding requests: "Does anyone know the brand of the Tiffany Watson Juan El Caballo Loco top?"
When audiences seek out "top" content featuring these two individuals, the interest often stems from several key factors: Athletic Synergy:
However, the specific phrase "Juan el Caballo Loco top" appears to combine her name with a title often associated with adult entertainment performer Juan "El Caballo Loco." There is linking Tiffany Watson to this individual or any collaborative content of that nature. Key Contextual Details
Yes. And her response is the reason this article exists.
So, where does the fit in?
Fans have been searching tirelessly for the specific "top" or outfit Tiffany wore during their most popular clips. Here is why the look resonated:
Is this related to a specific , clothing line , or media production?
The "top" likely refers to a clothing item, possibly a t-shirt or a blouse, that the two have designed or promoted together. Unfortunately, I couldn't find more specific information on the exact nature of the collaboration.
Top-tier performers cannot be one-trick ponies. Tiffany has shown her range by moving fluidly between major studios and exploring diverse genres, from VR experiences to more hardcore productions. Juan, similarly, has worked across the spectrum, from the niche offerings of Nubile Films to the mainstream spectacles of Brazzers and BangBros. Their ability to adapt to different directors, scripts, and co-stars is a hallmark of their professionalism.
Juan El Caballo Loco, whose real name is Juan Hernandez, was born on November 12, 1993, in Mexico. He gained a massive following on social media platforms like Instagram and YouTube for his entertaining and often hilarious content, which frequently features his outrageous antics, pranks, and challenges.
: Primarily known for her role on the British reality series Made in Chelsea , Watson has built a brand around lifestyle, veganism, and fitness.
Without specific details on the product, collaboration nature, or direct reviews, it's challenging to provide a detailed review. However, if you're interested in a product or collaboration involving Tiffany Watson and Juan El Caballo Loco, looking at their social media platforms or where such products are sold could provide more insights and direct reviews from customers.
Because the original source is lost, forums like and Vintage Fashion Guild are constantly fielding requests: "Does anyone know the brand of the Tiffany Watson Juan El Caballo Loco top?"
When audiences seek out "top" content featuring these two individuals, the interest often stems from several key factors: Athletic Synergy: