Chains and heterogens:
PDB Chain Sequences:
>4x2pA (A:) maswshpqfekgalevlfqgpgyhmsevlitglrtravnvplaypvhtavgtvgtaplvl idlatsagvvghsylfaytpvalkslkqllddmaamivneplapvsleamlakrfclagy tglirmaaagidmaawdalgkvhetplvkllganarpvqaydshsldgvklateravtaa elgfravktkigypaldqdlavvrsirqavgddfgimvdynqsldvpaaikrsqalqqeg vtwieeptlqhdyeghqriqsklnvpvqmgenwlgpeemfkalsigacrlampdamkigg vtgwirasalaqqfgipmsshlfqeisahllaatptahwlerldlagsvieptltfeggn avipdlpgvgiiwrekeigkylv
>4x2pA (A:) evlitglrtravnvplaypvhtavgtvgtaplvlidlatsagvvghsylfaytpvalksl kqllddmaamivneplapvsleamlakrfclagytglirmaaagidmaawdalgkvhetp lvkllganarpvqaydshsldgvklateravtaaelgfravktkigypaldqdlavvrsi rqavgddfgimvdynqsldvpaaikrsqalqqegvtwieeptlqhdyeghqriqsklnvp vqmgenwlgpeemfkalsigacrlampdamkiggvtgwirasalaqqfgipmsshlfqei sahllaatptahwlerldlagsvieptltfeggnavipdlpgvgiiwrekeigkylv