Question

If you see an NCBI accession numbers start with NM_, what does it mean? What about XP_, NC_, NW_, NZ_?

Answer 1

The NCBI accession numbers mean:

• NM_ - reviewed mRNA sequence
• XP_ - nonreviewed protein sequence
• NC_ - reviewed genomic region
• NW_ - previous reviewed chromosome genomic contig
• NZ_ - not finished genomic sequence