>4yz4A (A:) observed residues (from ATOM records)
ntpvleknnvtltgggenvtkelkdkftsgdftvvikynqssekglqalfgisnskpgqq
nsyvdvflrdngelgmeardtssnknnlvsrpasvwgkykqeavtntvavvadsvkktys
lyangtkvvekkvdnflnikdikgidyymlggvkragktafgfngtlenikffnsaldee
tvkkmttnavtghliytandttgsnyfripvlytfsngrvfssidaryggthdflnkini
atsysddngktwtkpkltlafddfapvplewprevggrdlqisggatyidsvivekknkq
vlmfadvmpagvsfreatrkdsgykqidgnyylklrkqgdtdynytirengtvyddrtnr
ptefsvdknfgikqngnyltveqysvsfekteyrngtkvhmnifykdalfkvvptnyiay
issndhgeswsaptllppimglnrnapylgpgrgiiesstgrilipsytgkesafiysdd
ngaswkvkvvplpsswsaeaqfvelspgviqaymrtnngkiayltskdagttwsapeylk
fvsnpsygtqlsiinysqlidgkkavilstpnstngrkhgqiwiglinddntidwryhhd
vdysnygysystltelpnheiglmfekfdswsrnelhmknvvpyitfkiedlkkn