bHLH_annotator
bHLH Annotator is a web-based tool for the automated identification and functional annotation of the basic Helix–Loop–Helix (bHLH) transcription factor family in plants. The tool analyzes coding or protein sequences derived from genome or transcriptome assemblies and combines homology searches, phylogenetic analysis, orthology inference, and motif detection to provide reliable functional annotations. By automating the annotation workflow, bHLH Annotator enables rapid and reproducible characterization of bHLH gene families in newly sequenced plant species.
Key benefits
Automated identification of plant bHLH transcription factors
Functional annotation based on orthology to experimentally characterized bHLHs
Combines BLAST or HMMER searches with phylogenetic classification
Detects conserved bHLH domains, DNA-binding properties, and subfamily-specific motifs
Supports genome and transcriptome assemblies
Web-based service with reproducible analysis workflow
Applications
Annotation of bHLH gene families in newly sequenced plant genomes
Functional characterization of transcription factors
Comparative genomics of plant transcription factor families
Evolutionary and phylogenetic analyses of bHLH proteins
Candidate gene identification for plant functional genomics
Analysis of de novo genome and transcriptome assemblies
Intended use
The bHLH Annotator is intended for plant biologists, genome annotation specialists, bioinformaticians, and evolutionary researchers working with plant genome or transcriptome data. It is particularly suited for researchers who require accurate and automated annotation of bHLH transcription factors for comparative genomics, gene family evolution, and functional genomics studies.