PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7729523-1 1995 The tumour-lysing and antimicrobial polypeptide NK-lysin and the pulmonary surfactant-associated polypeptide SP-B exhibit 24% residue identities (49% similarities), including six half-cystine residues in the same disulphide bonding pattern, and similar far-UV circular dichroism spectra corresponding to 45-55% alpha-helix and 20-25% beta-sheet structures. disulphide 213-223 surfactant protein B Homo sapiens 109-113