Chains and heterogens:
PDB Chain Sequences:
>2arxA (A:) qdslsfgfptfpsdqknlifqgdaqiknnavqltktdsngnpvastvgrilfsaqvhlwe ksssrvanfqsqfsfslksplsngadgiaffiappdttipsgsgggllglfapgtaqnts anqviavefdtfyaqdsntwdpnyphigidvnsirsvktvkwdrrdgqslnvlvtfnpst rnldvvatysdgtryevsyevdvrsvlpewvrvgfsaasgeqyqthtleswsftstllyt aqkkgenlalem
>2arxA (A:) qdslsfgfptfpsdqknlifqgdaqiknnavqltktdsngnpvastvgrilfsaqvhlwe ksssrvanfqsqfsfslksplsngadgiaffiappdttipsgsgggllglfapgtaqnts anqviavefdtfyaqdsntwdpnyphigidvnsirsvktvkwdrrdgqslnvlvtfnpst rnldvvatysdgtryevsyevdvrsvlpewvrvgfsaasgeqyqthtleswsftstllyt a
>2arxB (B:) qdslsfgfptfpsdqknlifqgdaqiknnavqltktdsngnpvastvgrilfsaqvhlwe ksssrvanfqsqfsfslksplsngadgiaffiappdttipsgsgggllglfapgtaqnts anqviavefdtfyaqdsntwdpnyphigidvnsirsvktvkwdrrdgqslnvlvtfnpst rnldvvatysdgtryevsyevdvrsvlpewvrvgfsaasgeqyqthtleswsftstllyt aqkkgenlalem
>2arxB (B:) qdslsfgfptfpsdqknlifqgdaqiknnavqltktdsngnpvastvgrilfsaqvhlwe ksssrvanfqsqfsfslksplsngadgiaffiappdttipsgsgggllglfapgtaqnts anqviavefdtfyaqdsntwdpnyphigidvnsirsvktvkwdrrdgqslnvlvtfnpst rnldvvatysdgtryevsyevdvrsvlpewvrvgfsaasgeqyqthtleswsftstllyt a