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