Chains and heterogens:
PDB Chain Sequences:
>1mra_ (-) evlitglrtravnvplaypvhtavgtvgtaplvlidlatsagvvghsylfaytpvalksl kqllddmaamivneplapvsleamlakrfclagytglirmaaagidmaawdalgkvhetp lvkllganarpvqaydshsldgvklateravtaaelgfravktkigypaldqdlavvrsi rqavgddfgimvdynqsldvpaaikrsqalqqegvtwieeptlqhdyeghqriqsklnvp vqmgenwlgpeemfkalsigacrlampnamkiggvtgwirasalaqqfgipmsshlfqei sahllaatptahwlerldlagsvieptltfeggnavipdlpgvgiiwrekeigkylv