Chains and heterogens:
PDB Chain Sequences:
>9paiA (A:) vhhppsyvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqa amgfkiddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrst vkqvdfseverarfiindwvkthtkgmisnllgkgavdqltrlvlvnalyfngqwktpfp dssthrrlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaap yekevplsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfr qfqadftslsdqeplhvaqalqkvkievnesgtvpssstavivsarmapeeiimdrpflf vvrhnptgtvlfmgqvmep