Cloning and functional characterisation of an enzyme involved in the elongation of Delta6-polyunsaturated fatty acids from the moss Physcomitrella patens. - Zank,T..K..; Zahringer,U..; Beckmann,C..; Pohnert,G..; Boland,W..; Holtorf,H..; Reski,R..; Lerchl,J..; Heinz,E.. (The Plant Journal, 2002)