>2nvvB (B:) observed residues (from ATOM records)
alrfitaeeaaefvhhndnvgfsgftpagnpkvvpaaiakraiaahekgnpfkigmftga
stgarldgvlaqadavkfrtpyqsnkdlrnlinngstsyfdlhlstlaqdlrygfygkvd
vaiievadvtedgkilpttgvgilpticrladriivelndkhpkeimgmhdlcepldppa
rrelpvytpsdrigkpyvqvdpakivgvvrtsepndesdfapldpvtqaigdnvaaflvs
emkagripkdflplqsgvgnvanavlgalgdnpdipafnmyteviqdavialmkkgrikf
asgcslsvsrsviqdiyanldffkdkillrpqeysnnpeivrrlgvitintaleadifgn
insthvsgtrmmngiggsgdftrnsyvsifttpsvmkdgkissfvpmvahhdhsehsvkv
iisewgvadlrgknpreraheiidkcvhpdyrpllrqylelgvkgqtpqnldccfafhqe
laksgdmrnvrwedym