>2zt0A (A:) SEQRES residues vlsegewqlvlhvwakveadvaghgqdilirlfkshpetlekfdrfkhlkteaemkased lkkhgvtvltalgailkkkghheaelkplaqshatkhkipikylefiseaiihvlhsrhp gdfgadaqgamnkalelfrkdiaakykelgyqg