Chains and heterogens:
PDB Chain Sequences:
>1twiA (A:) mlgndtveikdgrffidgydaielaekfgtplyvmseeqikinynryieafkrweeetgk efivayaykananlaitrllaklgcgadvvsggelyiaklsnvpskkivfngncktkeei imgieanirafnvdsiselilinetakelgetanvafrinpnvnpkthpkistglkknkf gldvesgiamkaikmalemeyvnvvgvhchigsqltdispfieetrkvmdfvvelkeegi eiedvnlggglgipyykdkqiptqkdladaiintmlkykdkvempnlilepgrslvatag yllgkvhhiketpvtkwvmidagmndmmrpamyeayhhiinckvknekevvsiagglces sdvfgrdreldkvevgdvlaifdvgaygismannynargrprmvltskkgvflirerety adliakdivpphll
>1twiB (B:) mlgndtveikdgrffidgydaielaekfgtplyvmseeqikinynryieafkrweeetgk efivayaykananlaitrllaklgcgadvvsggelyiaklsnvpskkivfngncktkeei imgieanirafnvdsiselilinetakelgetanvafrinpnvnpkthpkistglkknkf gldvesgiamkaikmalemeyvnvvgvhchigsqltdispfieetrkvmdfvvelkeegi eiedvnlggglgipyykdkqiptqkdladaiintmlkykdkvempnlilepgrslvatag yllgkvhhiketpvtkwvmidagmndmmrpamyeayhhiinckvknekevvsiagglces sdvfgrdreldkvevgdvlaifdvgaygismannynargrprmvltskkgvflirerety adliakdivpphll
>1twiC (C:) mlgndtveikdgrffidgydaielaekfgtplyvmseeqikinynryieafkrweeetgk efivayaykananlaitrllaklgcgadvvsggelyiaklsnvpskkivfngncktkeei imgieanirafnvdsiselilinetakelgetanvafrinpnvnpkthpkistglkknkf gldvesgiamkaikmalemeyvnvvgvhchigsqltdispfieetrkvmdfvvelkeegi eiedvnlggglgipyykdkqiptqkdladaiintmlkykdkvempnlilepgrslvatag yllgkvhhiketpvtkwvmidagmndmmrpamyeayhhiinckvknekevvsiagglces sdvfgrdreldkvevgdvlaifdvgaygismannynargrprmvltskkgvflirerety adliakdivpphll
>1twiD (D:) mlgndtveikdgrffidgydaielaekfgtplyvmseeqikinynryieafkrweeetgk efivayaykananlaitrllaklgcgadvvsggelyiaklsnvpskkivfngncktkeei imgieanirafnvdsiselilinetakelgetanvafrinpnvnpkthpkistglkknkf gldvesgiamkaikmalemeyvnvvgvhchigsqltdispfieetrkvmdfvvelkeegi eiedvnlggglgipyykdkqiptqkdladaiintmlkykdkvempnlilepgrslvatag yllgkvhhiketpvtkwvmidagmndmmrpamyeayhhiinckvknekevvsiagglces sdvfgrdreldkvevgdvlaifdvgaygismannynargrprmvltskkgvflirerety adliakdivpphll