98%
921
2 minutes
20
Background: Profile Hidden Markov Model (HMM) is a powerful statistical model to represent a family of DNA, RNA, and protein sequences. Profile HMM has been widely used in bioinformatics research such as sequence alignment, gene structure prediction, motif identification, protein structure prediction, and biological database search. However, few comprehensive, visual editing tools for profile HMM are publicly available.
Results: We develop a visual editor for profile Hidden Markov Models (HMMEditor). HMMEditor can visualize the profile HMM architecture, transition probabilities, and emission probabilities. Moreover, it provides functions to edit and save HMM and parameters. Furthermore, HMMEditor allows users to align a sequence against the profile HMM and to visualize the corresponding Viterbi path.
Conclusion: HMMEditor provides a set of unique functions to visualize and edit a profile HMM. It is a useful tool for biological sequence analysis and modeling. Both HMMEditor software and web service are freely available.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2386073 | PMC |
http://dx.doi.org/10.1186/1471-2164-9-S1-S8 | DOI Listing |
3 Biotech
September 2025
Molecular Biology and Biotechnology Division, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001 India.
Unlabelled: Glutathione S-transferase (GST), a glutathione dependent enzyme with multifunctional activity plays crucial role in plants ability to withstand stresses both biotic and abiotic. Present study involves Glutathione S-transferase (GST) gene family identification and analysis in a model bryophyte species . Study reveals a total of 37 GST proteins using sequence similarity searches and further validated through hidden Markov model (HMM).
View Article and Find Full Text PDFGenome Biol Evol
July 2025
Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, Maharashtra 400005, India.
Most cellular reactions are interdependent; however, a subset of reactions often associate more closely to form a defined reaction pathway. An extreme arrangement of interdependent reactions occurs when the cognate proteins physically associate to constitute a complex. Respiratory Complex I (C-I) is one of the largest membrane-resident protein assemblies.
View Article and Find Full Text PDFGenome Biol
August 2025
Department of Genetics, University of Cambridge, Downing Street, Cambridge, CB2 3EH, UK.
Plant organelle genomes, particularly large mitochondrial genomes with complex repeats, present significant challenges for assembly. The advent of long-read sequencing enables the assembly of complete genomes, but problems of resolving alternative structures remain. Here we introduce a novel tool that employs a syncmer-based assembler for rapid assembly graph construction, integrates a profile-HMM database for robust organelle identification, and leverages a new search method to find the best supported path through the assembly graph.
View Article and Find Full Text PDFToxins (Basel)
July 2025
Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, São Paulo 05503-900, Brazil.
This study investigated the effects of () venom and its high- (HMM) and low-molecular mass (LMM) fractions on human osteoclast (OC) differentiation and function in vitro, aiming to identify novel therapeutics for bone disorders. Venom preparations were applied at 5 µg/mL (crude venom and HMM) or 1 µg/mL (LMM) from day 4 of peripheral blood mononuclear cell (PBMC) differentiation through terminal OC formation, enabling evaluation across early differentiation, fusion, and maturation stages. RNA sequencing revealed 7793 genes common to all experimental groups, with unique gene expression signatures of 149 (control), 221 (HMM), 248 (crude venom), and 60 (LMM) genes, reflecting distinct molecular responses.
View Article and Find Full Text PDFFront Plant Sci
July 2025
Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
Calcium (Ca) serves as a crucial intracellular messenger in plant signaling, particularly during stress responses. Precise regulation of calcium levels by transporters such as calcium/cation (CaCA) antiporters is essential for its effective function. However, the evolutionary dynamics and stress-related roles of the CaCA superfamily remain underexplored in key Brassicaceae crops.
View Article and Find Full Text PDF