HELIX 1 H VAL A 7 GLU A 19 1 13 HELIX 2 H ILE A 27 GLN A 43 1 17 HELIX 3 H ASN A 49 ARG A 68 1 20 HELIX 4 H VAL B 7 GLU B 19 1 13 HELIX 5 H ILE B 27 GLN B 43 1 17 HELIX 6 H ASN B 49 ARG B 68 1 20