1URZ | A:2-51,A:135-191,A:272-299; B:2-51,B:135-191,B:272-299; C:2-51,C:135-191,C:272-299; D:2-51,D:135-191,D:272-299; E:2-51,E:135-191,E:272-299; F:2-51,F:135-191,F:272-299 | LOW PH INDUCED, MEMBRANE FUSION CONFORMATION OF THE ENVELOPE PROTEIN OF TICK-BORNE ENCEPHALITIS VIRUS |