The CorreLogo generates for a given RNA or DNA sequence alignment a three-dimensional representation in VRML format and JavaView JVX format. The generated model contains quantities like mutual information, composition and single column information (“conservation”) in one three-dimensional representation. This can be useful for visual inspection of the properties of a nucleotide sequence alignment and for RNA secondary structure prediction.
Program enoLOGOS generates LOGOs of transcription factor DNA binding sites from various types of input matrices. It can utilize standard count matrices, probability matrices or matrices of “energy” values (i.e., log-frequencies).
WebLogo is a web based application designed to make the generation of sequence logos easy and painless. Sequence logos provide a richer and more precise description of sequence similarity than consensus sequences and can rapidly reveal significant features of the alignment otherwise difficult to perceive. Each logo consists of stacks of letters, one stack for each position in the sequence. The overall height of each stack indicates the sequence conservation at that position (measured in bits), whereas the height of symbols within the stack reflects the relative frequency of the corresponding amino or nucleic acid at that position. WebLogo has been enhanced recently with additional features and options, to provide a convenient and highly configurable sequence logo generator.
LOLA (LOgos Look Amazing) is a tool for generating sequence logos using Position Weight Matrix based protein profiles. LOLA allows you to generate custom sequence logos by setting parameters such as logo height, trim percentage, and residue colour scheme. You can also generate “logo trees” based on clustered protein profiles to analyze binding motif classes. Sequence logos and logo trees can be saved in various formats including PDF, PNG, and JPEG.