SNRNP40 encodes the human gene, Small nuclear ribonucleoprotein, U5 40kDa subunit. It may also be known as: U5 small nuclear ribonucleoprotein 40 kDa protein; U5-40K; 38 kDa-splicing factor; Prp8-binding protein; hPRP8BP; U5 snRNP-specific 40 kDa protein; WD repeat-containing protein 57; U5 snRNP 40 kDa protein; 40K; PRP8BP; PRPF8BP; SPF38; WDR57; small nuclear ribonucleoprotein 40kDa (U5). The encoded protein has an amino acid length of 357 and a mass of 39.3 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Zebrafish, Frog.