Chains and heterogens:
PDB Chain Sequences:
>2x90A (A:) alvkeeiqakeylenlnkelakrtnveteaawaygsnitdenekkkneisaelakfmkev asdttkfqwrsyqsedlkrqfkaltklgyaalpeddyaelldtlsamesnfakvkvcdyk dstkcdlaldpeieevisksrdheelayywrefydkagtavrsqferyvelntkaaklnn ftsgaeawldeyeddtfeqqledifadirplyqqihgyvrfrlrkhygdavvsetgpipm hllgnmwaqqwseiadivspfpekplvdvsaemekqgytplkmfqmgddfftsmnltklp qdfwdksiiekptdgrdlvchasawdfyltddvrikqctrvtqdqlftvhhelghiqyfl qyqhqpfvyrtganpgfheavgdvlslsvstpkhlekigllkdyvrddearinqlfltal dkivflpfaftmdkyrwslfrgevdkanwncafwklrdeysgieppvvrsekdfdapaky hisadveylrylvsfiiqfqfyksacikagqydpdnvelpldncdiygsaaagaafhnml smgaskpwpdaleafngerimsgkaiaeyfeplrvwleaeniknnvhigwttsnkcvs