>1r3rA (A:) observed residues (from ATOM records)
fpelkndtflraawgeetdytpvwcmrqagrylpefretraaqdffstcrspeacceltl
qplrrfpldaaiifsnilvvpqalgmevtmvpgkgpsfpeplreeqdlerlrdpevvase
lgyvfqaitltrqrlagrvpligfagapwtlmtymvegggsstmaqakrwlyqrpqashq
llriltdalvpylvgqvvagaqalqlfeshaghlgpqlfnkfalpyirdvakqvkarlre
aglapvpmiifakdghfaleelaqagyevvgldwtvapkkarecvgktvtlqgnldpcal
yaseeeigqlvkqmlddfgphryianlghglypdmdpehvgafvdavhkhsrllrq