Assemble proposes an intuitive graphical interface to study and construct complex three-dimensional RNA structures. When an RNA tertiary structure is opened with Assemble, it is automatically annotated with a secondary structure definition. This secondary structure can be used as a map to analyze the original tertiary structure. Using a secondary structure definition, Assemble can also produce a first draft of a 3D Model. Then the construction process can be pursued “by hand” using several widgets.
VisSPA (Visual Signature Pattern Analysis) is a program that accepts an alignment of sequences, interactively analyzes frequencies of residues at each position in groups of sequences and supports the generation of sequence logos. The frequency calculations and program name were initially inspired by VESPA (by Gerry Myers and Bette Korber of Los Alamos National Labs).
VarPlot is a program that accepts an alignment of sequences, and interactively plots sliding-window analyses of genetic distance among sequences or groups of sequences. It is different from SimPlot because in SimPlot, all groups are compared to one query, whereas in VarPlot all groups are compared to one another. Also, VarPlot includes calculation of nonsynonymous and synonymous distance (using the Nei and Gojobori method at present).
MargFreq is a relatively user-friendly Windows program that does a repetitive task – calculating the marginal frequencies at each position of a nucleotide/amino acid sequence. This program accepts sequence alignments in many different formats. It also does some rudimentary analysis for covariation.
CleanCollapse is a relatively user-friendly Windows program that accepts an alignment of sequences, and optionally can remove rare sporadic polymorphisms that may represent analytical artifacts, and also reduce redundancy by “collapsing” identical sequences into a single sequence. The program provides a record of these manipulation, and some rudimentary analysis (e.g. proportion of synonymous and nonsynonymous sporadic changes) that may assist interpretation