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File Size: 4.7 MB
OS: Windows All
License: Freeware
Publisher: The European Bioinformatics Institute
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Clustal X Description

Clustal X is an advanced program that deals with multiple sequence alignment for proteins and DNA. Designed as a GUI for ClustalW, the program carries out in-depth sequence analysis, while also offering many utilities to perform proper comparisons.Load multiple specialized formatsThe program is able to work with ready sequences, imported from files of the following formats: EMBL/SWISSPROT, NBRF/PIR, Pearson (Fasta), GCG/MSF (Pileup), Clustal (*.aln), GCG9/RSF and GDE.
During the import process, Clustal X attempts to detect whether the sequences are nucleotides or amino acids, but there’s no actual guarantee that the choice will be correct.
Cleverly highlighting important elementsOnce the source file has been loaded, the sequence alignment will be displayed in the main window of the program. The built-in coloring scheme serves to highlight conserved features, making them pop out via vivid colors.
In order to distinguish the contents of the sequences, it is recommended that you use a larger font; this will result in a zoomed sequence view, making it easier to spot its composition.
Easy alignment processThe operations allowed by the program make quite the list; you can append a sequence to an existing alignment, cut or paste a fragment, as well as to search for a string or to remove existing gaps.
Also, you can perform alignments via one of the following methods: complete (the sequence will undergo a full analysis), guide tree only or a realignment of the selected sequences and / or residue ranges.
It is recommended that before starting an alignment process, you reset all the parameters (new gaps, protein gaps) in order for the results to be conclusive.
Analyze data and get an alignment quality scoreOne of the most important indicative of the analysis will be the alignment quality score, which is plotted for each column individually. A high score designates a well-conserved column, while low conservation levels are indicated by a lower score.
In conclusionHowever, the analysis depends on a variety of parameters, which should be set in accordance with the scientific purpose that needs to be carried out. Most definitely, the program makes a great choice for scientists, as well as students who are looking to make a carrier out of DNA sequencing.
Reviewed by Andreea Matei, last updated on July 21st, 2014

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