Chains and heterogens:
PDB Chain Sequences:
>1gkxA (A:) vrltptmmlysgrsqdgshllksgrylqqelpvriahrikgfrslpfiigcnptilhvhe lyirafqkltdfppikdqadeaqycqlvrqllddhkdvvtllaeglresrkhiedeklvr yfldktltsrlgirmlathhlalhedkpdfvgiictrlspkkiiekwvdfarrlcehkyg naprvringhvaarfpfipmpldyilpellknamratmeshldtpynvpdvvitianndv dliirisdrgggiahkdldrvmdyhfttaeastqdprisplfghldmhsggqsgpmhgfg fglptsrayaeylggslqlqslqgigtdvylrlrhidgree
>1gkxA (A:) vrltptmmlysgrsqdgshllksgrylqqelpvriahrikgfrslpfiigcnptilhvhe lyirafqkltdfppikdqadeaqycqlvrqllddhkdvvtllaeglresrkhiedeklvr yfldktltsrlgirmlathhlalhedkpdfvgiictrlspkkiiekwvdfarrlcehkyg naprvringhvaarfpfipmpldyilpellknamratmeshldtpynvpdvvitianndv dliirisdrgggiahkdldrvmdyhfgfglptsrayaeylggslqlqslqgigtdvylrl rhidgree