Chains and heterogens:
PDB Chain Sequences:
>3emzA (A:) steipslsasyansfkigaavhtrmlqtegefiakhynsvtaenqmkfeevhpreheytf eaadeivdfavargigvrghtlvwhnqtpawmfedasggtasremmlsrlkqhidtvvgr ykdqiyawdvvneaiedktdlimrdtkwlrllgedylvqafnmaheadpnallfyndyne tdpvkrekiynlvrslldqgapvhgigmqghwnihgpsmdeirqaieryasldvqlhvte ldlsvfrhedqrtdlteptaemaelqqkryedifglfreyrsnitsvtfwgvadnytwld nfpvrgrknwpfvfdtelqpkdsfwriigqd