Chains and heterogens:
PDB Chain Sequences:
>2r4bA (A:) mkkghhhhhhgletelvepltpsgtapnqaqlrilketelkrvkvlgsgafgtvykgiwv pegetvkipvaikilnettgpkanvefmdealimasmdhphlvrllgvclsptiqlvtql mphgclleyvhehkdnigsqlllnwcvqiakgmmyleerrlvhrdlaarnvlvkspnhvk itdfglarllegdekeynadggkmpikwmalecihyrkfthqsdvwsygvtiwelmtfgg kpydgiptreipdllekgerlpqppictidvymvmvkcwmidadsrpkfkelaaefsrma rdpqrylviqgddrmklpspn
>2r4bA (A:) lvepltpsgtapnqaqlrilketelkrvkvlgsgafgtvykgiwvpegetvkipvaikil nanvefmdealimasmdhphlvrllgvclsptiqlvtqlmphgclleyvhehkdnigsql llnwcvqiakgmmyleerrlvhrdlaarnvlvkspnhvkitdfglarllegdekeynadg gkmpikwmalecihyrkfthqsdvwsygvtiwelmtfggkpydgiptreipdllekgerl pqppictidvymvmvkcwmidadsrpkfkelaaefsrmardpqrylviqgdd
>2r4bB (B:) mkkghhhhhhgletelvepltpsgtapnqaqlrilketelkrvkvlgsgafgtvykgiwv pegetvkipvaikilnettgpkanvefmdealimasmdhphlvrllgvclsptiqlvtql mphgclleyvhehkdnigsqlllnwcvqiakgmmyleerrlvhrdlaarnvlvkspnhvk itdfglarllegdekeynadggkmpikwmalecihyrkfthqsdvwsygvtiwelmtfgg kpydgiptreipdllekgerlpqppictidvymvmvkcwmidadsrpkfkelaaefsrma rdpqrylviqgddrmklpspn
>2r4bB (B:) lvepltpsgtapnqaqlrilketelkrvkvlgsgafgtvykgiwvpegetvkipvaikil anvefmdealimasmdhphlvrllgvclsptiqlvtqlmphgclleyvhehkdnigsqll lnwcvqiakgmmyleerrlvhrdlaarnvlvkspnhvkitdfglarllegdekeynadgg kmpikwmalecihyrkfthqsdvwsygvtiwelmtfggkpydgiptreipdllekgerlp qppictidvymvmvkcwmidadsrpkfkelaaefsrmardpqrylviqgdd