Chains and heterogens:
PDB Chain Sequences:
>2xxtA (A:) gsnrslivttileepyvlfkksdkplygndrfegycidllrelstilgftyeirlvedgk ygaqddvngqwngmvrelidhkadlavaplaityvrekvidfskpfmtlgisilyrkgtp idsaddlakqtkieygavedgatmtffkkskistydkmwafmssrrqsvlvksneegiqr vltsdyaflmesttiefvtqrncnltqigglidskgygvgtpmgspyrdkitiailqlqe egklhmmkekwwrgngcpepr
>2xxtA (A:) slivttileepyvlfkksdkplygndrfegycidllrelstilgftyeirlvedgkygaq ddvngqwngmvrelidhkadlavaplaityvrekvidfskpfmtlgisilyrkgtpidsa ddlakqtkieygavedgatmtffkkskistydkmwafmssrrqsvlvksneegiqrvlts dyaflmesttiefvtqrncnltqigglidskgygvgtpmgspyrdkitiailqlqeegkl hmmkekww
>2xxtB (B:) gsnrslivttileepyvlfkksdkplygndrfegycidllrelstilgftyeirlvedgk ygaqddvngqwngmvrelidhkadlavaplaityvrekvidfskpfmtlgisilyrkgtp idsaddlakqtkieygavedgatmtffkkskistydkmwafmssrrqsvlvksneegiqr vltsdyaflmesttiefvtqrncnltqigglidskgygvgtpmgspyrdkitiailqlqe egklhmmkekwwrgngcpepr
>2xxtB (B:) slivttileepyvlfkksdkplygndrfegycidllrelstilgftyeirlvedgkygaq ddvngqwngmvrelidhkadlavaplaityvrekvidfskpfmtlgisilyrkgtpidsa ddlakqtkieygavedgatmtffkkskistydkmwafmssrrqsvlvksneegiqrvlts dyaflmesttiefvtqrncnltqigglidskgygvgtpmgspyrdkitiailqlqeegkl hmmkekww