Chains and heterogens:
PDB Chain Sequences:
>1b3kA (A:) vhhppsyvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqa amgfkiddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrst vkqvdfseverarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfp dssthrrlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaap yekevplsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfr qfqadftslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflf vvrhnptgtvlfmgqvmep
>1b3kA (A:) yvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqaamgfki ddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrstvkqvdf severarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfpdssthr rlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaapyekevp lsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfrqfqadf tslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflfvvrhnp tgtvlfmgqvmep
>1b3kB (B:) vhhppsyvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqa amgfkiddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrst vkqvdfseverarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfp dssthrrlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaap yekevplsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfr qfqadftslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflf vvrhnptgtvlfmgqvmep
>1b3kB (B:) yvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqaamgfki ddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrstvkqvdf severarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfpdssthr rlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaapyekevp lsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfrqfqadf tslsdqeplhvalalqkvkievnesgapeeiiidrpflfvvrhnptgtvlfmgqvmep
>1b3kC (C:) vhhppsyvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqa amgfkiddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrst vkqvdfseverarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfp dssthrrlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaap yekevplsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfr qfqadftslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflf vvrhnptgtvlfmgqvmep
>1b3kC (C:) yvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqaamgfki ddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrstvkqvdf severarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfpdssthr rlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaapyekevp lsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfrqfqadf tslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflfvvrhnp tgtvlfmgqvmep
>1b3kD (D:) vhhppsyvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqa amgfkiddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrst vkqvdfseverarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfp dssthrrlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaap yekevplsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfr qfqadftslsdqeplhvalalqkvkievnesgtvassstavivsarmapeeiiidrpflf vvrhnptgtvlfmgqvmep
>1b3kD (D:) yvahlasdfgvrvfqqvaqaskdrnvvfspygvasvlamlqlttggetqqqiqaamgfki ddkgmapalrhlykelmgpwnkdeisttdaifvqrdlklvqgfmphffrlfrstvkqvdf severarfiindwvkthtkgmishllgtgavdqltrlvlvnalyfngqwktpfpdssthr rlfhksdgstvsvpmmaqtnkfnytefttpdghyydilelpyhgdtlsmfiaapyekevp lsaltnilsaqlishwkgnmtrlprllvlpkfsletevdlrkplenlgmtdmfrqfqadf tslsdqeplhvalalqkvkievnesgapeeiiidrpflfvvrhnptgtvlfmgqvmep