Chains and heterogens:
PDB Chain Sequences:
>1q74A (A:) msetprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadh adqlggyrigeltaalralgvsapiylggagrwrdsgmagtdqrsqrrfvdadprqtvga lvaiirelrphvvvtydpnggyghpdhvhthtvttaavaaagvgsgtadhpgdpwtvpkf ywtvlglsalisgaralvpddlrpewvlpradeiafgysddgidavveadeqaraakvaa laahatqvvvgptgraaalsnnlalpiladehyvlaggsagardergwetdllaglgfta sgt
>1q74A (A:) etprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadhad qlggyrigeltaalralgvsapiylggagrwrdsgmarsqrrfvdadprqtvgalvaiir elrphvvvtydpnggyghpdhvhthtvttaavaaagvhpgdpwtvpkfywtvlglsalis garalvpddlrpewvlpradeiafgysddgidavveadeqaraakvaalaahatqvvvgp tgraaalsnnlalpiladehyvlaggsagardergwetdllaglgft
>1q74B (B:) msetprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadh adqlggyrigeltaalralgvsapiylggagrwrdsgmagtdqrsqrrfvdadprqtvga lvaiirelrphvvvtydpnggyghpdhvhthtvttaavaaagvgsgtadhpgdpwtvpkf ywtvlglsalisgaralvpddlrpewvlpradeiafgysddgidavveadeqaraakvaa laahatqvvvgptgraaalsnnlalpiladehyvlaggsagardergwetdllaglgfta sgt
>1q74B (B:) setprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadha dqlggyrigeltaalralgvsapiylggagrwrdsrsqrrfvdadprqtvgalvaiirel rphvvvtydpnggyghpdhvhthtvttaavaaagvadhpgdpwtvpkfywtvlglsalis garalvpddlrpewfgysddgidavveadeqaraakvaalaahatqvvvgptgraaalsn nlalpiladehyvlaggsagardergwetdllaglgf
>1q74C (C:) msetprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadh adqlggyrigeltaalralgvsapiylggagrwrdsgmagtdqrsqrrfvdadprqtvga lvaiirelrphvvvtydpnggyghpdhvhthtvttaavaaagvgsgtadhpgdpwtvpkf ywtvlglsalisgaralvpddlrpewvlpradeiafgysddgidavveadeqaraakvaa laahatqvvvgptgraaalsnnlalpiladehyvlaggsagardergwetdllaglgfta sgt
>1q74C (C:) setprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadha dqlggyrigeltaalralgvsapiylggagrwrdsrsqrrfvdadprqtvgalvaiirel rphvvvtydpnggyghpdhvhthtvttaavaaagadhpgdpwtvpkfywtvlglsalisg aralvpddlrpewvlprgysddgidavveadeqaraakvaalaahatqvvvgptgraaal snnlalpiladehyvlaggsagardergwetdllaglgf
>1q74D (D:) msetprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadh adqlggyrigeltaalralgvsapiylggagrwrdsgmagtdqrsqrrfvdadprqtvga lvaiirelrphvvvtydpnggyghpdhvhthtvttaavaaagvgsgtadhpgdpwtvpkf ywtvlglsalisgaralvpddlrpewvlpradeiafgysddgidavveadeqaraakvaa laahatqvvvgptgraaalsnnlalpiladehyvlaggsagardergwetdllaglgfta sgt
>1q74D (D:) setprllfvhahpddeslsngatiahytsrgaqvhvvtctlgeegevigdrwaqltadha dqlggyrigeltaalralgvsapiylggagrwrdsgmaqrsqrrfvdadprqtvgalvai irelrphvvvtydpnggyghpdhvhthtvttaavaaagvadhpgdpwtvpkfywtvlgls alisgaralvpddlrpgysddgidavveadeqaraakvaalaahatqvvvgptgraaals nnlalpiladehyvlaggsagardergwetdllaglgf