>3u81A (A:) observed residues (from ATOM records)
gdtkeqrilryvqqnakpgdpqsvleaidtyctqkewamnvgdakgqimdavireyspsl
vlelgaycgysavrmarllqpgarlltmeinpdcaaitqqmlnfaglqdkvtilngasqd
lipqlkkkydvdtldmvfldhwkdrylpdtlllekcgllrkgtvlladnvivpgtpdfla
yvrgsssfecthyssyleymkvvdglekaiyqgpsspd