ChimeraUGEM WebGUI

Input Sequences

Provide your proteins to optimize in FASTA format.

Maximum file size: 50 MB

Reference Organism/Sequences

Select or upload reference sequences.

Maximum file size: 50 MB

Parameters

Input Sequences

Provide your nucleotide sequences in FASTA format.

Maximum file size: 50 MB

Reference Organism/Sequences

Select or upload reference sequences.

Maximum file size: 50 MB

Parameters

Logo

About this tool

The ChimeraUGEM WebGUI is a bioinformatics tool for the analysis of gene sequences (coding and non-coding), as well as the design of protein coding sequences for optimized expression. It differs from other tools in that it:

  • Can capture long host-specific regulatory patterns that may be missed by simple codon optimization
  • Does not require expression data (unsupervised): For example, in a recent study we show that ChimeraARS scores predict heterologous expression levels in a plant-based system, where little data is available for training of ML models.
  • Allows for the design of multiple optimized variants for the target protein with minimal homology to ensure genetic stability in multi-copy systems
For details see Zur and Tuller, 2015; Diament et al., 2019, Burghardt and Tuller, 2025 (in submission).

How to use

  1. Provide proteins to optimize or nt sequences to analyze
  2. Select or upload a set of reference sequences, typically coding sequences from the host organism of interest. For convenience, coding sequences for several model organisms are provided from their NCBI reference genomes.
  3. Set parameters, reasonable default values are provided. Check the tooltips for information about each parameter.
  4. Results are provided as FASTA (optimized sequences) or CSV (ChimeraARS scores) files

Download