>1xu7B (B:) observed residues (from ATOM records)
qplneefrpemlqgkkvivtgaskgigremayhlakmgahvvvtarsketlqkvvshcle
lgaasahyiagtmedmtfaeqfvaqagklmggldmlilnhitntslnlfhddihhvrksm
evnflsyvvltvaalpmlkqsngsivvvsslagkvaypmvaaysaskfaldgffssirke
ysvsrvnvsitlcvlglidtetamkavsgivhmqaapkeecaleiikggalrqeevyyds
slwttllirnpsrkileflyst