MBP GI:68509928 myelin basic protein isoform 3 1 masqkrpsqr hgskylatas tmdharhgfl prhrdtgild sigrffggdr 50 51 gapkrgsgkd shhpartahy gslpqkshgr tqdenpvvhf fknivtprtp 100 101 ppsqgkgrgl slsrfswgae gqrpgfgygg rasdyksahk gfkgvdaqgt 150 151 lskifklggr dsrsgspmar r