National Biomedical Research Foundation (NBRF) maintains nucleotide and protein sequence databases. PIR file names often have a .pir extension. The header line of a nucleotide sequence file in pir-format begins with a greater than sign “>” followed by DL.
Protein information resource (PIR) is an annotated, non-redundant and cross-referenced database of protein sequences at the NBRF. The header line of protein sequence file in pir-format begins with a greater than sign “>” followed by P1.
Example PIR DNA and PIR Protein files can be accessed using the menu on the right.