Sequence Manipulation Suite
A comprehensive toolkit for biologists. Convert formats, analyze DNA/Protein sequences, and visualize structures—securely in your browser.
Universal Converters
Biopython Universal Converter
The ultimate sequence formatter. Convert between FASTA, GenBank, EMBL, and 20+ other biological formats instantly.
Open Babel Chemical Converter
Advanced structural conversion for chemistry and biology. Handles 3D coordinates, PDB files, and chemical informatics.
Sequence Manipulation
Reverse Complement
Generate reverse, complement, or reverse-complement DNA/RNA sequences.
DNA to mRNA Transcription
Simulate transcription: convert DNA templates into mRNA sequences.
DNA to Protein Translation
Translate nucleotide sequences into amino acids with custom genetic codes.
Reverse Translate
Generate a probable DNA coding sequence from a protein sequence.
Random Sequence Generator
Create random DNA, RNA, or Protein sequences with specific GC content or length.
FASTA Splitter
Break down large FASTA files into smaller, manageable fragments.
Palindromic Finder
Locate palindromic sequences within your DNA data.
Structure & Data Viewers
AB1 & ABI Chromatogram Viewer
Visualize Sanger sequencing trace files (.ab1, .abi) directly in the browser.
Universal Molecular Viewer
Interactive 3D visualization for PDB, CIF, SDF, MOL2, PDBQT, and XYZ files.
Calculators & Analysis
Welcome to Science Codons Sequence Manipulation Suite (v5.0), the modern hub for biological data analysis. Unlike traditional desktop software that requires complex installation and updates, our suite offers a lightweight, browser-based alternative powered by robust engines like Biopython and Open Babel.
Whether you are a student needing a quick Reverse Complement or a bioinformatician converting complex PDB to FASTA files, we have streamlined the workflow. Our Universal Converters handle over 20 biological formats (including GenBank, EMBL, NEXUS, and PHYLIP), eliminating the need to switch between multiple websites.
Frequently Asked Questions
Is there a file size limit for uploads?
Yes, currently we support files up to 100MB to ensure optimal performance for all users. However, we are constantly working to upgrade our servers. Your donations directly help us increase this limit and handle larger datasets for the community.
Is my data saved on your servers?
Absolutely not. We do not store your data. Simple tools run entirely in your browser (client-side), while complex converters process files on our secure servers. In all cases, your files are automatically deleted immediately after processing.
Are these tools free to use?
Yes! Our mission is to keep these bioinformatics tools free forever. Since we do not have corporate sponsors, we rely entirely on community support. If you find our tools useful, please consider supporting us to keep the project alive.
Can I use this on my phone or tablet?
Yes, the entire suite is fully responsive and mobile-friendly. You can analyze sequences and view structures seamlessly on any device, from desktop workstations to smartphones.
How do I report a bug or suggest a feature?
We appreciate your feedback! If you encounter any issues, please report them via our Contact Page.
Support Open Science
We develop and maintain these tools for free to help the scientific community. If Science Codons has saved you time today, please consider supporting us to keep the servers running.
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