>1is7B (B:) SEQRES residues gfperelprpgasrpaeksrppeakgaqpadawkagrprseednelnlpnlaaayssilr slgedpqrqgllktpwraatamqfftkgyqetisdvlndaifdedhdemvivkdidmfsm cehhlvpfvgrvhigylpnkqvlglsklariveiysrrlqvqerltkqiavaitealqpa gvgvvieathmcmvmrgvqkmnsktvtstmlgvfredpktreefltlirs