>4q9nB (B:) observed residues (from ATOM records)
mlkidltgkiafiagigddngygwgiakmlaeagatilvgtwvpiykifsqslelgkfna
srelsngelltfakiypmdasfdtpedipqeilenkrykdlsgytvsevveqvkkhfghi
dilvhslanspeiakplldtsrkgylaalstssysfisllshfgpimnagastisltyla
smravpgygggmnaakaalesdtkvlaweagrrwgvrvntisagplasragkaigfierm
vdyyqdwaplpspmeaeqvgaaaaflvsplasaitgetlyvdhganvmgigpemf