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The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.

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  • Tools: Analyze data using NCBI software
  • Downloads: Get NCBI data or software
  • How Tos: Learn how to accomplish specific tasks at NCBI
  • Submissions: Submit data to GenBank or other NCBI databases

NCBI Announcements

  • BLAST+ 2.2.30 released

    Oct 30, 2014

    A new version (2.2.30) of the stand-alone BLAST executables is now available, bringing several improvements to BLAST+. These improvements include tasks for BLASTX and TBLASTN (blastx-fast and tblastn-fast) that use longer words, as described in Shiryev, Papadopoulos, Schaffer, and Agarwala (2007), as well as support for composition-based statistics in RPS-BLAST. A number of bug fixes, including those for FASTA parsing, are also included.

  • New Genome BLAST selector on the BLAST homepage

    Oct 28, 2014

    You can now easily find Genome-specific BLAST pages using the search box on the BLAST homepage under the “BLAST Assembled Genomes” section. This new feature allows you to quickly access and search BLAST databases for the genome of an organism of interest.

  • Next NCBI webinar on November 5th

    Oct 23, 2014

    On November 5th, NCBI will have a webinar entitled “Exploring and Downloading Sequences and Annotations for Genomes and Metagenomes at the NCBI”. This presentation will introduce you to how NCBI processes genome-level data and produces annotation through the prokaryotic and eukaryotic genome annotation pipelines and show you how to access and download these data from the NCBI site.

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