(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.) > cellular organisms: NE > Eukaryota: NE > Viridiplantae: NE > Streptophyta: NE > Streptophytina: NE > Embryophyta: NE > Tracheophyta: NE > Euphyllophyta: NE > Spermatophyta: NE > Magnoliophyta: NE > Mesangiospermae: NE > eudicotyledons: NE > Gunneridae: NE > Pentapetalae: NE > rosids: NE > malvids: NE > Brassicales: NE > Brassicaceae: NE > Brassiceae: NE > Brassica: NE > Brassica napus: NE
Warning: This entry is a compilation of different species or line or strain with more than 90% amino acide identity. You can retrieve all strain data
(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.) Brassica napus var. napus: N, E.
Brassica rapa subsp. pekinensis: N, E.
LegendThis sequence has been compared to family alignement (MSA) red => minority aminoacid blue => majority aminoacid color intensity => conservation rate title => sequence position(MSA position)aminoacid rate Catalytic site Catalytic site in the MSA MINFNQWLVLVVCSLAILKAEGLLVNITFVRNAVAKGAVCLDGSPPAYHL DRGSGTGINSWLIQLEGGGWCHNVTNCISRMHTKLGSSKKMVENLAFSAI LSNKEQRNPDFYNWNRVKVRYCDGSSFTGDVKTVNPATNLHFRGARVWLA VMRELLAKGMRNAENAVLSGCSAGGLASLMHCDSFRALLPMGTNVKCLSD AGFFLNTRDVSGAQYIKSYFNDVVTLHGSAKNLPRSCTSRLTPAMCFFPQ YVARQIRTPVFVLNAAYDSWQIKNILAPRAADPDGKWQSCQLDIKNCQRS QLKVMQDFRLEFLSAVIGLGRSASRGMFIDSCYTHCQTETQTSWFWQDSP ILNRTTIAKAVGDWVYDRNLFQKIDCPYPCNPTCHHRVFTPQDAPPI
Oilseed rape (Brassica napus L.) was formed ~7500 years ago by hybridization between B. rapa and B. oleracea, followed by chromosome doubling, a process known as allopolyploidy. Together with more ancient polyploidizations, this conferred an aggregate 72x genome multiplication since the origin of angiosperms and high gene content. We examined the B. napus genome and the consequences of its recent duplication. The constituent An and Cn subgenomes are engaged in subtle structural, functional, and epigenetic cross-talk, with abundant homeologous exchanges. Incipient gene loss and expression divergence have begun. Selection in B. napus oilseed types has accelerated the loss of glucosinolate genes, while preserving expansion of oil biosynthesis genes. These processes provide insights into allopolyploid evolution and its relationship with crop domestication and improvement.
We report the annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage. We modeled 41,174 protein coding genes in the B. rapa genome, which has undergone genome triplication. We used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution. The extent of gene loss (fractionation) among triplicated genome segments varies, with one of the three copies consistently retaining a disproportionately large fraction of the genes expected to have been present in its ancestor. Variation in the number of members of gene families present in the genome may contribute to the remarkable morphological plasticity of Brassica species. The B. rapa genome sequence provides an important resource for studying the evolution of polyploid genomes and underpins the genetic improvement of Brassica oil and vegetable crops.