A Pack of Molecular Analysis Tools
DNA Analysis
- NEBcutter Restriction Analysis
NEBcutter is an on-line tool for restriction mapping nucleotide sequences that also features identification of non-overlapping ORFs.
- Watcut Restriction Analysis
Alternative restriction enzyme analysis.
- Reverse Complement
Convert DNA sequence data to it's Reverse Complement.
- Raw Translation of DNA
Translate DNA sequence in all 6 possible frames.
- Formatted DNA Sequence Translation
There are two sites you can use. The preferred one is located at www.justbio.com. You will need to register yourself with this site before you can use this tool and you must use Internet Explorer V5.5 (or better) or Netscape V6 (or better). This facility allows translation of DNA sequence in one, or more frames. The output is formatted as free text amino acid sequence as well as DNA sequence plus the aligned translation. This utility is a useful and fast way to format your sequence following an Open Reading Frame analysis.
The second site is located at www.expasy.org/tools/dna.html. The output requires more manual intervention with a word processor to make the sequence presentation acceptable
- Graphical Open Reading Frames Analysis at NIH
Graphically identify ORFs within DNA sequence data.
- Identification of Prokaryotic Promoters
A neural network based program to find possible transcription promoters. From the Berkley Drosophila Genome Project
- RepeatMasker
Screens DNA sequences for interspersed repeats and low complexity DNA sequences. Multiple sequences may me submitted in FASTA format
- EINVERTED, PALINDROME and EQUICKTANDEM
Find inverted and tandem repeats in sequence data.
- Codon usage table analysis
This Java applet analyzes a codon usage table and lists the codons for each amino acid and their relative abundance. This way of presenting a codon usage table makes comparing two tables much easier than with the usual form of the Codon Usage Database.
- Graphical Codon Usage Analyser
Differences in codon usage among organisms can lead to a variety of problems concerning heterologous gene expression. The GCUA tools display the codon bias in a graphical manner.
DNA / Peptide Sequence Comparisons
Data Tables
Database Sequence Search and Retrieval
Oligonucleotide Analysis
- Primer 3: WWW primer tool
Powerful PCR primer design program permitting one considerable control over the nature of the primers, including size of product desired, primer size and Tm range, and presence/absence of a 3-GC clamp.
- PCR Suite
Based on Primer 3, but has more stringent settings (to allow more working primersets) and a smaller range of
parameters. The suite consists of four programs: Overlapping_Primers is for creating multiple overlapping PCR products in one sequence. Genomic_Primers designs primers around exons in genomic sequence. All you need is a GenBank file containing your gene. SNP_Primers designs primers around every SNP in a GenBank file. cDNA_Primers designs primers around open reading frames.
- GeneFisher: Interactive Primer Design
Allows good control over primer design.
- Oligonucleotide primer selection
Search for unique primers within a sequence
- Reverse translation tool
This Java applet translates proteins into nucleotide sequences with adapted codon usage. This allows optimizing a sequence for expression in specific organisms
- Oligonucleotide Calculator
Java Script Oligo calculator (Netscape V2 or better).
Motif Searches
- Motif Search at ExPasy
Search the Prosite database for functional motifs within peptide sequences.
- Search the BLAST Conserved Domain Database (rpsblast)
Reverse Position Specific BLAST (RPS-BLAST) is a sensitive way of identifying conserved domains in proteins. The output of the analysis is in the form of conserved domain alignments. For additional information, refer to CDD help document. This analysis produces alignments with protein 3D structure. To view the 3D structures you will need the CN3D viewer. Read this file to get instructions on installing the viewer on a home Microsoft Windows system.
Peptide Sequence and Structure Analysis
Ribosomal RNA Analysis
- The RNA Fold Server
A forms based WWW page to allow you to fold your own sequences on Zuker's Server. Your job can be processed while you wait (the default) or can be submitted for batch processing. If you select a batch job, make sure your E-mail address is correct. Current limits on job sizes are: Immediate job = 500 bases, Batch job = 2000 bases.
Sequence Formatting and Submission to NCBI
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