Chains and heterogens:
PDB Chain Sequences:
>1g7vA (A:) mkqkvvsigdinvandlpfvlfggmnvlesrdlamricehyvtvtqklgipyvfkasfdk anrssihsyrgpgleegmkifqelkqtfgvkiitdvhepsqaqpvadvvdviqlpaflar qtdlveamaktgavinvkkpqfvspgqmgnivdkfkeggnekvilcdrganfgydnlvvd mlgfsimkkvsgnspvifdvthalqcrdpfgaasggrraqvaelaragmavglaglfiea hpdpehakcdgpsalplaklepflkqmkaiddlvkgfeeldtsk