>2xh2A (A:) observed residues (from ATOM records)
avskvyarsvydsrgnptvevelttekgvfrsivpsgantgvhealemrdgdkskwmgkg
vlhavknvndviapafvkanidvkdqkavddflisldgtanksklganailgvslaasra
aaaeknvplykhladlsksktspyvlpvpflnvlnggshaggalalqefmiaptgaktfa
ealrigsevyhnlksltkkrygasagnvgdeggvapniqtaeealdlivdaikaaghdgk
ikigldcasseffkdgkydldfknpnsdkskwltgpqladlyhslmkrypivsiedpfae
ddweawshffktagiqivadaltvtnpkriataiekkaadalllkvnqigtlsesikaaq
dsfaagwgvmvshrsgetedtfiadlvvglrtgqiktgaparserlaklnqllrieeelg
dnavfagenfhhgdkllh