Affiliation: | (1) Department of Plant Sciences, University of Cambridge, Downing Street, CB2 3EA Cambridge, UK;(2) Cambridge Centre for Molecular Recognition, University of Cambridge, Downing Street, CB2 3EA Cambridge, UK;(3) Present address: Department of Biochemistry, Arrhenius Laboratory for Natural Sciences, University of Stockholm, S-10691 Stokholm, Sweden;(4) Present address: AFRC Institute of Animal Physiology and Genetics Research, Babraham, CB2 4AT Cambridge, UK;(5) Present address: AFRC Institute of Arable Crops Research, Long Ashton Research Station, Long Ashton, BS18 9AF Bristol, UK |