Chains and heterogens:
PDB Chain Sequences:
>4grmA (A:) keveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrf taqlnkasqyvsllirdsqpsdsatylcavttdswgklqfgagtqvvvtpdiqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdsdvyitdkcvldmrsmdfksnsavawsnksd facanafnnsiipe
>4grmA (A:) eveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrft aqlnkasqyvsllirdsqpsdsatylcavttgklqfgagtqvvvtpdiqnpdpavyqlrd skssdksvclftdfdsqtnvsqskdsdvyitdkcvldmrsmdfksnsavawsnksdfaca nafn
>4grmB (B:) nagvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgev pngynvsrsttedfplrllsaapsqtsvyfcasrpglmsaqpeqyfgpgtrltvtedlkn vfppevavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplke qpalndsryalssrlrvsatfwqdprnhfrcqvqfyglsendewtqdrakpvtqivsaea wgrad
>4grmB (B:) gvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgevpn gynvsrsttedfplrllsaapsqtsvyfcasrpglqpeqyfgpgtrltvtedlknvfppe vavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplkeqpaln dsryalssrlrvsatfwqdprnhfrcqvqfyglsendewtqdrakpvtqivsaeawgrad
>4grmC (C:) keveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrf taqlnkasqyvsllirdsqpsdsatylcavttdswgklqfgagtqvvvtpdiqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdsdvyitdkcvldmrsmdfksnsavawsnksd facanafnnsiipe
>4grmC (C:) keveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrf taqlnkasqyvsllirdsqpsdsatylcavttdswgklqfgagtqvvvtpdiqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdsdvyitdkcvldmrsmdfksnsavawsnksd facanaf
>4grmD (D:) nagvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgev pngynvsrsttedfplrllsaapsqtsvyfcasrpglmsaqpeqyfgpgtrltvtedlkn vfppevavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplke qpalndsryalssrlrvsatfwqdprnhfrcqvqfyglsendewtqdrakpvtqivsaea wgrad
>4grmD (D:) nagvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgev pngynvsrsttedfplrllsaapsqtsvyfcasrpgmsaqpeqyfgpgtrltvtedlknv fppevavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvctdpqplkeq palndsryalssrlrvsatfwqdprnhfrcqvqfyglsendewtqdrakpvtqivsaeaw gra