Chains and heterogens:
PDB Chain Sequences:
>1q12A (A:) masvqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdl figekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaev lqlahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlh krlgrtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmn flpvkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvil egevqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgt acrrlhkepgvasashhhhhh
>1q12A (A:) vqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdlfig ekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaevlql ahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlhkrl grtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmnflp vkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvilege vqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgtacr rlhkepg
>1q12B (B:) masvqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdl figekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaev lqlahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlh krlgrtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmn flpvkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvil egevqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgt acrrlhkepgvasashhhhhh
>1q12B (B:) vqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdlfig ekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaevlql ahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlhkrl grtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmnflp vkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvilege vqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgtacr rlhkepg
>1q12C (C:) masvqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdl figekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaev lqlahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlh krlgrtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmn flpvkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvil egevqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgt acrrlhkepgvasashhhhhh
>1q12C (C:) vqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdlfig ekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaevlql ahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlhkrl grtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmnflp vkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvilege vqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgtacr rlhkepg
>1q12D (D:) masvqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdl figekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaev lqlahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlh krlgrtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmn flpvkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvil egevqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgt acrrlhkepgvasashhhhhh
>1q12D (D:) vqlqnvtkawgevvvskdinldihegefvvfvgpsgcgkstllrmiagletitsgdlfig ekrmndtppaergvgmvfqsyalyphlsvaenmsfglklagakkevinqrvnqvaevlql ahlldrkpkalsggqrqrvaigrtlvaepsvflldeplsnldaalrvqmrieisrlhkrl grtmiyvthdqveamtladkivvldagrvaqvgkplelyhypadrfvagfigspkmnflp vkvtataidqvqvelpmpnrqqvwlpvesrdvqvganmslgirpehllpsdiadvilege vqvveqlgnetqihiqipsirqnlvyrqndvvlveegatfaiglpperchlfredgtacr rlhkepg