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 Steam Rip and Its Implications
Running executables from unverified sources requires disabling antivirus software or adding exceptions. This leaves the entire operating system vulnerable to other threats, as the primary line of defense is intentionally weakened. The Advantages of Official Versions
Searching for "cyberpunk2077steamripinsaneramzes link" primarily leads to sites and communities focused on repacked or "cracked" video games. Understanding the Terminology
Mod Compatibility: Pirated versions may not always match the exact build number required by the latest Nexus Mods, leading to launch failures.
Cyberpunk 2077, developed and published by CD Projekt, is a highly anticipated role-playing game set in a dystopian future. It was released on December 10, 2020, for PC, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S. The game is available on Steam, a popular digital distribution platform for PC games.
Recommendation: It is strongly recommended to acquire software only through official channels (Steam, GOG, Epic Games Store, or authorized key resellers) to ensure system security, data privacy, and legal compliance.
The rise of Steam rips and RAMZES links has significant implications for the gaming industry. When gamers choose to download pirated copies of games, they deprive developers of revenue that is essential to creating high-quality games. This can lead to a range of problems, including reduced investment in game development, delayed releases, and even studio closures.
The Steam Rip and Its Implications
Running executables from unverified sources requires disabling antivirus software or adding exceptions. This leaves the entire operating system vulnerable to other threats, as the primary line of defense is intentionally weakened. The Advantages of Official Versions
Searching for "cyberpunk2077steamripinsaneramzes link" primarily leads to sites and communities focused on repacked or "cracked" video games. Understanding the Terminology
Mod Compatibility: Pirated versions may not always match the exact build number required by the latest Nexus Mods, leading to launch failures.
Cyberpunk 2077, developed and published by CD Projekt, is a highly anticipated role-playing game set in a dystopian future. It was released on December 10, 2020, for PC, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X/S. The game is available on Steam, a popular digital distribution platform for PC games.
Recommendation: It is strongly recommended to acquire software only through official channels (Steam, GOG, Epic Games Store, or authorized key resellers) to ensure system security, data privacy, and legal compliance.
The rise of Steam rips and RAMZES links has significant implications for the gaming industry. When gamers choose to download pirated copies of games, they deprive developers of revenue that is essential to creating high-quality games. This can lead to a range of problems, including reduced investment in game development, delayed releases, and even studio closures.