>1b52A (A:) observed residues (from ATOM records)
advpagvqladkqtlvrnngsevqsldphkiegvpesnvsrdlfegllisdveghpspgv
aekwenkdfkvwtfhlrenakwsdgtpvtahdfvyswqrladpntaspyasylqyghian
iddiiagkkpatdlgvkalddhtfevtlsepvpyfykllvhpsvspvpksavekfgdkwt
qpanivtngayklknwvvnerivlernpqywdnaktvinqvtylpissevtdvnryrsge
idmtynnmpielfqklkkeipnevrvdpylctyyyeinnqkapfndvrvrtalklaldrd
iivnkvknqgdlpaysytppytdgaklvepewfkwsqqkrneeakkllaeagftapltfd
llyntsdlhkklaiavasiwkknlgvnvnlenqewktfldtrhqgtfdvaragwcadyne
ptsflntmlsdssnntahykspafdkliadtlkvaddtqrselyakaeqqldkdsaivpv
yyyvnarlvkpwvggytgkdpldniyvknlyiikh