Chains and heterogens:
PDB Chain Sequences:
>1k75A (A:) msfntiidwnsctaeqqrqllmrpaisasesitrtvndildnvkargdealreysakfdk ttvtalkvsaeeiaaaserlsdelkqamavavknietfhtaqklppvdvetqpgvrcqqv trpvasvglyipggsaplfstvlmlatpasiagckkvvlcspppiadeilyaaqlcgvqd vfnvggaqaiaalafgtesvpkvdkifgpgnafvteakrqvsqrldgaaidmpagpsevl viadsgatpdfvasdllsqaehgpdsqvilltpaadmarrvaeaverqlaelpraetarq alnasrlivtkdlaqcveisnqygpehliiqtrnarelvdsitsagsvflgdwspesagd yasgtnhvlptygytatcsslgladfqkrmtvqelskegfsalastietlaaaerltahk navtlrvnalkeqa
>1k75A (A:) ntiidwnsctaeqqrqllmrpaisasesitrtvndildnvkargdealreysakfdkttv talkvsaeeiaaaserlsdelkqamavavknietfhtaqklppvdvetqpgvrcqqvtrp vasvglyipggsaplfstvlmlatpasiagckkvvlcspppiadeilyaaqlcgvqdvfn vggaqaiaalafgtesvpkvdkifgpgnafvteakrqvsqrldgaaidmpagpsevlvia dsgatpdfvasdllsqaehgpdsqvilltpaadmarrvaeaverqlaelpraetarqaln asrlivtkdlaqcveisnqygpehliiqtrnarelvdsitsagsvflgdwspesagdyas gtnhvlptygytatcsslgladfqkrmtvqelskegfsalastietlaaaerltahknav tlrvnalkeqa
>1k75B (B:) msfntiidwnsctaeqqrqllmrpaisasesitrtvndildnvkargdealreysakfdk ttvtalkvsaeeiaaaserlsdelkqamavavknietfhtaqklppvdvetqpgvrcqqv trpvasvglyipggsaplfstvlmlatpasiagckkvvlcspppiadeilyaaqlcgvqd vfnvggaqaiaalafgtesvpkvdkifgpgnafvteakrqvsqrldgaaidmpagpsevl viadsgatpdfvasdllsqaehgpdsqvilltpaadmarrvaeaverqlaelpraetarq alnasrlivtkdlaqcveisnqygpehliiqtrnarelvdsitsagsvflgdwspesagd yasgtnhvlptygytatcsslgladfqkrmtvqelskegfsalastietlaaaerltahk navtlrvnalkeqa
>1k75B (B:) ntiidwnsctaeqqrqllmrpaisasesitrtvndildnvkargdealreysakfdkttv talkvsaeeiaaaserlsdelkqamavavknietfhtaqklppvdvetqpgvrcqqvtrp vasvglyipggsaplfstvlmlatpasiagckkvvlcspppiadeilyaaqlcgvqdvfn vggaqaiaalafgtesvpkvdkifgpgnafvteakrqvsqrldgaaidmpagpsevlvia dsgatpdfvasdllsqaehgpdsqvilltpaadmarrvaeaverqlaelpraetarqaln asrlivtkdlaqcveisnqygpehliiqtrnarelvdsitsagsvflgdwspesagdyas gtnhvlptygytatcsslgladfqkrmtvqelskegfsalastietlaaaerltahknav tlrvnalkeqa