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Amino Acid Explorer
This tool allows users to explore the characteristics of amino acids by comparing their structural and chemical properties, predicting protein sequence changes caused by mutations, viewing common substitutions, and browsing the functions of given residues in conserved domains.
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BLAST Tutorials and Guides
This page links to a number of BLAST-related tutorials and guides, including a selection guide for BLAST algorithms, descriptions of BLAST output formats, explanations of the parameters for stand-alone BLAST, directions for setting up stand-alone BLAST on local machines and using the BLAST URL API.
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Coffee Break
Part of the NCBI Bookshelf, Coffee Break combines reports on recent biomedical discoveries with use of NCBI tools. Each report incorporates interactive tutorials that show how NCBI bioinformatics tools are used as a part of the research process.
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E-Bench
This interactive tool allows users to build E-utility URLs, either from a form or by hand, and then view their raw output. The tool provides a simple environment for testing E-utility URLs before including them in applications.
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Ebot
A tool that allows users to construct an E-utility analysis pipeline using an online form, and then generates a Perl script to execute the pipeline.
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NCBI News
Provides information on new and updated resources and NCBI research and development projects. The News site contains feature articles highlighting services, resource features and tools, as well as frequent postings describing important announcements regarding key datasets and services of interest to the user community. Links to NCBI's social media sites along and a list of available RSS feeds and Email listservs are provided.
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PSSM Viewer
Allows users to display, sort, subset and download position-specific score matrices (PSSMs) either from CDD records or from Position Specific Iterated (PSI)-BLAST protein searches. The tool also can align a query protein to the PSSM and highlight positions of high conservation.
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PubMed Tutorials
A collection of web and flash tutorials on PubMed searching and linking, saving searches in MyNCBI, using MeSH and other PubMed services.