>pdb|2arb|A B QDSLSFGFPTFPSDQKNLIFQGDAQIKNNAVQLTKTDSNGNPVASTVGRILFSAQVHLWEKSSSRVANFQSQFSFSLKSPLSNGADGIAFFIAPPDTTIPSGSGGGLLGLFAPGTAQNTSANQVIAVEFDTFYAQDSNTWDPNYPHIGIDVNSIRSVKTVKWDRRDGQSLNVLVTFNPSTRNLDVVATYSDGTRYEVSYEVDVRSVLPEWVRVGFSAASGEQYQTHTLESWSFTSTLLYTAQKKGENLALEM