Search piRNA in piRBase
Organism: Specifies which organism data to use.
Name/Accession/Alias: To search for a specific piRNA, type a piRNA name provided by piRBase, eg, piR-hsa-5,
or an accession in NCBI, eg, DQ573815, or a piRNA alias provided by NCBI or RNAdb, such as PIR192555.
Sequence: Search piRNA by sequence. 1 MM: 1 mismatch; 2 MM: 2 mismatches. 2 MM is slow.
SubStr: Search sub-strings of input sequence; Extend 3: Search for 3' extended sequences (<= 3 nt).