Chains and heterogens:
PDB Chain Sequences:
>2nroA (A:) mefttglmsldtalnemlsrvtpltaqetlplvqcfgrilasdvvspldvpgfdnsamdg yavrladiasgqplpvagksfagqpyhgewpagtcirimtgapvpegceavvmqeqteqm dngvrftaevrsgqnirrrgedisagavvfpagtrlttaelpviaslgiaevpvirkvrv alfstgdelqlpgqplgdgqiydtnrlavhlmleqlgcevinlgiirddphalraafiea dsqadvvissggvsvgeadytktileelgeiafwklaiqpgkpfafgklsnswfcglpgn pvsatltfyqlvqpllaklsgntasglparqrvrtasrlkktpgrldfqrgvlqrnadge levtttghqgshifssfslgncfivlerdrgnvevgewvevepfnalfggl
>2nroA (A:) lmsldtalnemlsrvtpltaqetlplvqcfgrilasdvvspldvpgfdnsamdgyavrla diasgqplpvagksfagqpyhgewpagtcirimtgapvpegceavvmqeqteqmdngvrf taevrsgqnirrrgedisagavvfpagtrlttaelpviaslgiaevpvirkvrvalfstg delqlpgqplgdgqiydtnrlavhlmleqlgcevinlgiirddphalraafieadsqadv vissggvsvgeadytktileelgeiafwklaiqpgkpfafgklsnswfcglpgnpvsatl tfyqlvqpllaklsgntasglparqrvrtasrlkktpgrldfqrgvlqrnadgelevttt ghqgshifssfslgncfivlerdrgnvevgewvevepfnalfg
>2nroB (B:) mefttglmsldtalnemlsrvtpltaqetlplvqcfgrilasdvvspldvpgfdnsamdg yavrladiasgqplpvagksfagqpyhgewpagtcirimtgapvpegceavvmqeqteqm dngvrftaevrsgqnirrrgedisagavvfpagtrlttaelpviaslgiaevpvirkvrv alfstgdelqlpgqplgdgqiydtnrlavhlmleqlgcevinlgiirddphalraafiea dsqadvvissggvsvgeadytktileelgeiafwklaiqpgkpfafgklsnswfcglpgn pvsatltfyqlvqpllaklsgntasglparqrvrtasrlkktpgrldfqrgvlqrnadge levtttghqgshifssfslgncfivlerdrgnvevgewvevepfnalfggl
>2nroB (B:) lmsldtalnemlsrvtpltaqetlplvqcfgrilasdvvspldvpgfdnsamdgyavrla diasgqplpvagksfagqpyhgewpagtcirimtgapvpegceavvmqeqteqmdngvrf taevrsgqnirrrgedisagavvfpagtrlttaelpviaslgiaevpvirkvrvalfstg delqlpgqplgdgqiydtnrlavhlmleqlgcevinlgiirddphalraafieadsqadv vissggvsvgeadytktileelgeiafwklaiqpgkpfafgklsnswfcglpgnpvsatl tfyqlvqpllaklsgntasglparqrvrtasrlkktpgrldfqrgvlqrnadgelevttt ghqgshifssfslgncfivlerdrgnvevgewvevepfnalfg