COMPARE TWO SEQUENCES:
LALIGN - (EMBnet) finds multiple matching subsegments in two sequences. Provides one with % identity for different subsegments of the sequence.
FFAS - The Fold and Function Assignment System. The profile of a user's protein can now be compared with ~20 additional profile databases. The user can, through a series of tabs, navigate multiple results pages, and also includes novel functionality, such as a dotplot graph viewer, modeling tools, an improved 3D alignment viewer and links to the database of structural similarities. (Reference: Jaroszewski, L. et al. 2011. Nucleic Acids Res. 39(Web Server issue):W38-44)
Compare Two Sequences with LALIGN/PLALIGN find internal duplications by calculating non-intersecting local alignments of protein or DNA sequences. LALIGN shows the alignments and similarity scores, while PLALIGN presents a "dot-plot" like graph.
LAST - provides a lot of control of data handling, along with dotplots and coloured alignments (Reference: Kielbasa SM et al. Genome Res.;21(3): 487-93).
VerAlign multiple sequence alignment comparison is a comparison program that assesses the quality of a test alignment against a reference version of the same alignments.
Pairwise nucleotide sequence alignment for taxonomy (EzBioCloud, Seoul National University, Republic of Korea) - for nucleotide sequences < 5 kb it gives colour aligments and a similarity score based upon Myers and Miller (Global alignment)
DOUBLE ACT v2 - program to produce the input comparison file for comparing genomes within the Artemis Comparison Tool (ACT)
GeneWise (EMBL-EBI) - compares a protein sequence to a genomic DNA sequence, allowing for introns and frameshifting errors.
SIM - Alignment tool for protein (ExPASy, Switzerland) gives fragmented alignments similar to LALIGN.
Secondary Structure Element Alignment (SSEA) - computes alignments of protein secondary structures. The server supports both performing pairwise alignments and searching a secondary structure against a library of domain folds. It can calculate global and local secondary structure element alignments. (Reference: P. Fontana et al. (2005) Bioinformatics 21: 393-395).
WebPRANK - server supports the alignment of DNA, protein and codon sequences as well as protein-translated alignment of cDNAs, and includes built-in structure models for the alignment of genomic sequences. The resulting alignments can be exported in various formats widely used in evolutionary sequence analyses. The webPRANK server also includes a powerful web-based alignment browser for the visualisation and post-processing of the results in the context of a cladogram relating the sequences, allowing (e.g.) removal of alignment columns with low posterior reliability. In addition to de novo alignments, webPRANK can be used for the inference of ancestral sequences with phylogenetically realistic gap patterns, and for the annotation and post-processing of existing alignments. (Reference: Löytynoja, A., & Goldman, N. 2010. BMC Bioinformatics 11: 579).
BLAST2 (NCBI) - also useful for DNA sequence comparisons. Provides small graphic which is only of use with proteins or short DNA sequences.
Protein Sequence similarity and identity scores:
SUPERMATCHER (L'Institut Pasteur, France) - is part of the EMBOSS group of programs. Use 10 and 0.5 as the defaults in the Gap opening penalty and Gap extension penalty, respectively.
MATCHER - finds the best local alignments between two sequences (EMBOSS)
zPicture (Comparative Genomics , Lawrence Livermore National Laboratory, U.S.A.) - is a DNA or genome alignment and visualization tool based on blastz alignment program. Alignments can be automatically submitted to rVista 2.0 to identify evolutionary conserved transcription factor binding sites.
FOLDALIGN - folds and aligns RNA structures (make a foldalignment) based on a lightweight energy model and sequence similarity. The current version makes pairwise fold alignments. (Reference: J. H. Havgaard et al. 2005. Bioinformatics 21: 1815 - 1824).
COMPARE MULTIPLE SEQUENCES:
BACKGROUND INFORMATION: There are two good on-line help sites for CLUSTAL W. These are (a) On-line help for CLUSTAL (Wiki.) and, (b) Multiple sequence alignment, (Wiki)
Several good sites:
ClustalW - Multiple Sequence Alignment (EBI, United Kingdom). This provides one with a number of options for data presentation, homology matrices [BLOSUM (Henikoff), PAM (Dayhoff) or GONNET, and presentation of phylogenetic trees (Neighbor-Joining, Phylip or Distance). Sites offering ClustalW alignment are at the Kyoto University and chEMBLnet.org
Clustal Omega - is a new multiple sequence alignment program that uses seeded guide trees and HMM profile-profile techniques to generate alignments. (Reference: Sievers, F. et al. 2011. Molecular Systems Biology 7 Article number: 539)
MAFFT Multiple sequence alignment and NJ / UPGMA phylogeny - I recently attempted to align thirteen 50kb bacteriophage genomes using ClustalW, not no success, MAFFT provided the alignment incredibly quickly. Unfortunately it would not generate a tree. The Clustal data was opened in ClustalX and the tree saved in default settings and visualized in FigTree (Reference: Katoh, K. et al. 2002. Nucl. Acids Rese. 30: 3059-3066).
DbClustal - (EMBL-EBI) aligns sequences from a BlastP database search with one query sequence. The alignment algorithm is based on ClustalW2 modified to incorporate local alignment data in the form of anchor points between pairs of sequences. Very colorful output.
LALIGN - part of VISTA Tools for Comparative Genomics
PROBCONS - is a novel tool for generating multiple alignments of protein sequences. Using a combination of probabilistic modeling and consistency-based alignment techniques, PROBCONS has achieved the highest accuracies of all alignment methods to date. On the BAliBASE benchmark alignment database, alignments produced by PROBCONS show statistically significant improvement over current programs, containing an average of 7% more correctly aligned columns than those of T-Coffee, 11% more correctly aligned columns than those of CLUSTAL W, and 14% more correctly aligned columns than those of DIALIGN. (Reference: C.B. Do et al. 2005. Genome Res. 15: 330-340).
webPRANK - incorporates phylogeny-aware multiple sequence alignment, visualisation and post-processing in an easy-to-use web interface.(Reference: Löytynoja, A., & Goldman, N. 2010. BMC Bioinformatics. 11:579).
GUIDANCE - implements two different algorithms for evaluating confidence scores: (i) the heads-or-tails (HoT) method, which measures alignment uncertainty due to co-optimal solutions; (ii) the GUIDANCE method, which measures the robustness of the alignment to guide-tree uncertainty. The server projects the confidence scores onto the MSA and points to columns and sequences that are unreliably aligned. These can be automatically removed in preparation for downstream analyses. N.B. Need at least 8 sequences(Reference: Penn, O. 2010. Nucleic Acids Res. 38(Web Server issue):W23-28).
SALIGN - automatically determines the best alignment procedure based on the inputs, while allowing the user to override default parameter values. Multiple alignments are guided by a dendrogram computed from a matrix of all pairwise alignment scores. When aligning sequences to structures, SALIGN uses structural environment information to place gaps optimally. If two multiple sequence alignments of related proteins are input to the server, a profile-profile alignment is performed.(Reference:Braberg, H. et al. 2012. Bioinformatics. 28(15):2072-2073).
AlignMe (for Alignment of Membrane Proteins) is a very flexible sequence alignment program that allows the use of various different measures of similarity. Thesesimilarity measures include: substitution matrices, hydrophobicity scales and any kind of profiles (i.e. secondary structure predictions or transmembrane predictions). (Reference: Khafizov K et al. 2014. Nucl. Acids Res. 42(W1), W246-W251)
PRALINE - is a multiple sequence alignment program with many options to optimize the information for each of the input sequences; e.g. global or local preprocessing, predicted secondary structure information and iteration capabilities. (Reference: V.A. Simossis et al. (2005) Nucleic Acids Res. 33: 816-824). Example of PRALINE output:
Gene Context Tool - is an incredible tool for visualizing the genome context of a gene or group of genes (synteny). In the following diagram an RpoN (Sigma54) protein was analyzed. (Reference: R. Ciria et al. (2004) Bioinformatics 20: 2307-2308).
ConSurf is is a bioinformatics tool for estimating the evolutionary conservation of amino/nucleic acid positions in a protein/DNA/RNA molecule based on the phylogenetic relations between homologous sequences. The degree to which an amino (or nucleic) acid position is evolutionarily conserved is strongly dependent on its structural and functional importance; rapidly evolving positions are variable while slowly evolving positions are conserved. (Reference: Ashkenazy, H. et al. 2010. Nucl. Acids Res. 38 (suppl 2): W529-W533).
MultAlin - Multiple sequence alignment by Florence Corpet (Institut National de la Recherche Agronomique (INRA), France). N.B. The results are presented in colour.
Multiple Alignment - GeneBee service (Belozersky Institute of Physico-chemical Biology, Moscow State University, Russia) . N.B. This service also provides phylogenetic analysis of the data.
PROMALS - constructs multiple protein sequence alignments using information from database searches and secondary structure prediction - for protein homologs with sequence identity below 10%, aligning close to half of the amino acid residues correctly on average.
(Reference: Pei, J. & Grishin, N.V. 2007. Bioinformatics. 23(7):802-808).
SANSparallel: interactive homology search against Uniprot - the webserver provides protein sequence database searches with immediate response and professional alignment visualization by third-party software. The output is a list, pairwise alignment or stacked alignment of sequence-similar proteins from Uniprot, UniRef90/50, Swissprot or Protein Data Bank. The stacked alignments are viewed in Jalview or as sequence logos. The database search uses the suffix array neighborhood search (SANS) method, which has been re-implemented as a client-server, improved and parallelized. The method is extremely fast and as sensitive as BLAST above 50% sequence identity. (Reference: P. Somervuo & L. Holm. 2015. Nucl. Acids Res. 43 (W1): W24-W29).
DiAlign (Univ. Bielfeld, Germany) - "DIALIGN is a novel program for multiple alignment developed by Burkhard Morgenstern et al. While standard alignment methods rely on comparing single residues and imposing gap penalties, DIALIGN constructs pairwise and multiple alignments by comparing whole segments of the sequences."
The Coffee Collection - T-Coffee (Aligns DNA, RNA or Proteins using the default T-Coffee), M-Coffee (Aligns DNA, RNA or Proteins by combining the output of popular aligners), R-Coffee (Aligns RNA sequences usingpredicted secondary structures), Expresso (Aligns protein sequences using structural information), PSI-Coffee (Aligns distantly related proteins using homology extension) and TM-Coffee (Aligns transmembrane proteins using homology extension). (Reference: Di Tommaso. P. et al. 2011. Nucleic Acids Res. 39(Web Server issue: W13-17; Chang, J.M. et al. 2012. BMC Bioinformatics. 13 Suppl 4: S1).
LocARNA - Multiple Alignment of RNAs - is a tool for multiple alignment of RNA molecules. LocARNA requires only RNA sequences as input and will simultaneously fold and align the input sequences. LocARNA outputs a multiple alignment together with a consensus structure. For the folding it makes use of a very realistic energy model for RNAs as it is by RNAfold of the Vienna RNA package (or Zuker's mfold). For the alignment it features RIBOSUM-like similarity scoring and realistic gap cost. ( Reference: C. Smith et al. 2010. Nucl. Acids Res. 38: W373-377).
CARNA is a tool for multiple alignment of RNA molecules. CARNA requires only the RNA sequences as input and will compute base pair probability matrices and align the sequences based on their full ensembles of structures. Alternatively, you can also provide base pair probability matrices (dot plots in .ps format) or fixed structures (as annotation in the FASTA alignment) for your sequences. If you provide fixed structures, only those structures and not the entire ensemble of possible structures is aligned. In contrast to LocARNA, CARNA does not pick the most likely consensus structure, but computes the alignment that fits best to all likely structures simultaneously. Hence, CARNA is particularly useful when aligning RNAs like riboswitches, which have more than one stable structure. (Reference: A. Dragos et al. 2012. Nucleic Acids Reseach 40: W49-W53)
Web-Beagle: a web server for the pairwise global or local alignment of RNA secondary structures. (Reference: E. Mattei et al. 2015. Nucl. Acids Res. 43 (W1): W493-W497).
Alternative presentations of alignments:
BOXSHADE: - (Hofmann & Baron, Institute Pasteur, France) This version accepts a wide variety of file formats and allows the requester considerable flexibility in defining the output appearance (colour and arrangement as well as format).
ESPript 3.0 - (IUniversite Lyon, France) - is a program which renders sequence similarities and secondary structure information from aligned sequences for analysis and publication purpose. This requires that you save your alignment as a *.aln file. Good control over output appearance and format is available (ps, tiff and gif). (Reference: Robert X. & Gouet P. 2014. Nucl. Acids Res. 42 (W1), W320-W324).
Multiple Align Show - (Bioinformatics.org/The Open Lab; University of Massachusetts Lowell) Allows considerable choice in colouring alignments.
H-BLOX (Molecular Design Laboratory, Institute of Organic Chemistry and Chemical Biology, Johann Wolfgang Goethe-University, Germany) provides information content or the relative entropy within DNA or protein alignment blocks.
Sequence comparison between two small genomes:
SCAN2 (Softberry.com) provides one with a colour-coded graphical alignment of genome length DNAs in Java. In the top panel regions of high sequence identity are presented in red. By highlighting the grey, yellow, green, black boxes one can select specific regions for examination of the sequence alignment. For additional information on the output see here. This site appears to work best with Internet Explorer.
Advanced PipMaker - aligns two DNA sequences and returns a percent identity plot of that alignment, together with a traditional textual form of the alignment. You might want to download Laj (Penn State - Bioinformatics Group, U.S.A.) for viewing and manipulating the output from pairwise alignment programs such as PipMaker representations of the alignments. (Reference: Schwartz et al. 2000. Genome Research 10: 577-586).
JDotter: A Java Dot Plot Viewer (Viral Bioinformatics Resource , University of Victoria, Canada) - a dot matrix plotter for Java. Produces similar diagrams to the above mentioned programs, but with better control on output.
YASS - perform DNA local alignments with results in dotplot and tabular form (Reference: L.Noe & G. Kucherov. 2005. Nucl. Acids Res. 33: W540-W543).
Dotlet - (Reference: T.Junier & M. Pagni. 2000. Bioinformatics 16:178-179)
multi-zPicture: multiple sequence alignment tool (Comparative Genomics , Lawrence Livermore National Laboratory, U.S.A.) - provides nice dotplot graphs and dynamic visualizations. If simple gene locations are provided in the form (e.g. > 2000 5000 RNA_polymerase; indicates the the RNA polymerase gene is found on the plus strand between bases 2000 and 5000) this data will be added to the dynamic visualization. zPicture alignments can be automatically submitted to rVista to identify conserved transcription factor binding sites.
VISTA - VISualization Tools for Alignments (Ernest Orlando Lawrence Berkeley National Laboratory, U.S.A.) - this URL allows one to align two genome-length sequences.
GeneOrder(D. Seto, Bioinformatics & Computational Biology, George Mason Univ., U.S.A.) is ideal for comparing small GenBank genomes (up to 2 Mb). Each gene from the Query sequence is compared to all of the genes from the Reference sequence using BLASTP. There are two display formats: graphical and tabular. Currently the graph is an applet and must be saved as a "SCREEN SHOT".
GeneOrder 4.0 (D. Seto, Bioinformatics & Computational Biology, George Mason Univ., U.S.A.) is designed to can be used to compare the gene order between two bacterial genomes (Reference: Mahadevan P. & Seto D. 2010. BMC Research Notes 3:41).
CoreGenes (D. Seto & P. Mahadevan, Bioinformatics & Computational Biology, George Mason Univ., U.S.A) - tallies the total number of genes in common between the two genomes being compared; displays the percent value of genes in common with a specific genome; determines the unique genes contained in a pair of proteomes. CoreGenes 3.5 is the batch CoreGenes server. I have extensively used this set of resources in the classification of bacterial viruses.
JABAWS 2 - provides web services for multiple sequence alignment, prediction of protein disorder, and aminoacid conservation conveniently packaged to run on your local computer, server or cluster. JABAWS v2.0introduces protein disorder prediction services based on DisEMBL, IUPred, Ronn, GlobPlot and proteinsequence alignment conservation measures calculated by AACon. A new multiple sequence alignment service forClustal Omega is also provided, in addition to standard JABAWS:MSA services for Clustal W, MAFFT, MUSCLE,TCOFFEE and PROBCONS. JABA Web Services can be accessed from the Jalview desktop application and providemultiple alignment and sequence analysis calculations limited only by your own local computing resources. (Reference: Troshin, P.V. 2011. Bioinformatics. 27(14):2001-2002).