Chains and heterogens:
PDB Chain Sequences:
>4lx1A (A:) vniprkekdfqgmleykkedeqklvknlilelkprgvavnlipglpayilfmcvrhadyl nddqkvrslltstinsikkvlkkrgddfetvsfwlsntcrflhclkqysgeegfmkhnts rqnehcltnfdlaeyrqvlsdlaiqiyqqlvrvlenilqpmivsgmlehetiqgvsgvkp tglrkrtssiadegtytldsilrqlnsfhsvmcqhgmdpelikqvvkqmfyiigaitlnn lllrkdmcswskgmqirynvsqleewlrdknlmnsgaketlepliqaaqllqvkkktddd aeaicsmcnalttaqivkvlnlytpvnefeervsvsfirtiqmrlrdrkdspqllmdakh ifpvtfpfnpsslaletiqipaslglgfisrv
>4lx1A (A:) dfqgmleykkedeqklvknlilelkprgvavnlipglpayilfmcvrhadylnddqkvrs lltstinsikkvlkkrgddfetvsfwlsntcrflhclkqysgeegfmkhntsrqnehclt nfdlaeyrqvlsdlaiqiyqqlvrvlenilqpmivsgmlehetytldsilrqlnsfhsvm cqhgmdpelikqvvkqmfyiigaitlnnlllrkdmcswskgmqirynvsqleewlrdknl mnsgaketlepliqaaqllqvkkktdddaeaicsmcnalttaqivkvlnlytpvnefeer vsvsfirtiqmrlrdrkdspqllmdakhifpvtfpfnpsslaletiqipaslglgfisrv
>4lx1B (B:) vniprkekdfqgmleykkedeqklvknlilelkprgvavnlipglpayilfmcvrhadyl nddqkvrslltstinsikkvlkkrgddfetvsfwlsntcrflhclkqysgeegfmkhnts rqnehcltnfdlaeyrqvlsdlaiqiyqqlvrvlenilqpmivsgmlehetiqgvsgvkp tglrkrtssiadegtytldsilrqlnsfhsvmcqhgmdpelikqvvkqmfyiigaitlnn lllrkdmcswskgmqirynvsqleewlrdknlmnsgaketlepliqaaqllqvkkktddd aeaicsmcnalttaqivkvlnlytpvnefeervsvsfirtiqmrlrdrkdspqllmdakh ifpvtfpfnpsslaletiqipaslglgfisrv
>4lx1B (B:) fqgmleykkedeqklvknlilelkprgvavnlipglpayilfmcvrhadylnddqkvrsl ltstinsikkvlkkrgddfetvsfwlsntcrflhclkqysgeegfmkhntsrqnehcltn fdlaeyrqvlsdlaiqiyqqlvrvlenilqpmivsgmlehetiqgtytldsilrqlnsfh svmcqhgmdpelikqvvkqmfyiigaitlnnlllrkdmcswskgmqirynvsqleewlrd knlmnsgaketlepliqaaqllqvkkktdddaeaicsmcnalttaqivkvlnlytpveer vsvsfirtiqmrlrdrkdspqllmdakhifpvtfpfnpsslaletiqipaslglgfisrv