The National Center for Biotechnology Information (NCBI) advances science and health by providing access to biomedical and genomic information. Use NCBI resources to explore genomic and protein sequences, variations, gene functions, and chemical properties.
Search over 30 NCBI bioinformatics databases simultaneously. Search by keyword (e.g. gene symbol, chemical name) to explore your topic from several molecular perspectives at once.
1. [a gene symbol] CFTR
2. [a chemical] phenylalanine
BLAST is the Basic Local Alignment Search Tool used for comparing primary biological sequence information. BLAST uses an algorithm to compare the similarity of a query sequence to the multitude of varied sequences stored in a library of databases, including GenBank and Protein Data Bank.
1. [a Nucleotide accession number] NC_000017.11
2. [protein FASTA sequence]
>gi|129295|sp|P01013|OVAX_CHICK GENE X PROTEIN (OVALBUMIN-RELATED) QIKDLLVSSSTDLDTTLVLVNAIYFKGMWKTAFNAEDTREMPFHVTKQESKPVQMMCMNNSFNVATLPAE KMKILELPFASGDLSMLVLLPDEVSDLERIEKTINFEKLTEWTNPNTMEKRRVKVYLPQMKIEEKYNLTS VLMALGMTDLFIPSANLTGISSAESLKISQAVHGAFMELSEDGIEMAGSTGVIEDIKHSPESEQFRADHP FLFLIKHNPTNTIVYFGRYWSP