>E2_trimer_trunc_3.1_refmac1_A EEILEMHGLRRIIFDKMTKAKQIMPHFTVMEEVDVTSMVSILDSAKARNRKVTVTGFLARIVPSILKQYP YLNAIYDETRRVYILKKYYNIGIAVDTPDGLNVFVIKDADRKSMVEISAEISDKASRARENKLQLDEVQD STFTITNVGTIGGIMSTPIINYPEVAILGVHRILEREGRKYMYLSLSCDHRLIDGAVATRFIVDLKKVIE DPNA