>4n45B (B:) observed residues (from ATOM records)
mkevviasavrtaigsygkslkdvpavdlgataikeavkkagikpedvnevilgnvlqag
lgqnparqasfkaglpveipamtinkvcgsglrtvslaaqiikagdadviiaggmenmsr
apylannarwgyrmgnakfvdemitdglwdafndyhmgitaeniaerwnisreeqdefal
asqkkaeeaiksgqfkdeivpvvikgrkgetvvdtdehprfgstieglaklkpafkkdgt
vtagnasglndcaavlvimsaekakelgvkplakivsygsagvdpaimgygpfyatkaai
ekagwtvdeldliesneafaaqslavakdlkfdmnkvnvnggaialghpigasgarilvt
lvhamqkrdakkglatlsigggqgtaillekc