Species code:	BUCCC
Taxonomy:	Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales; Enterobacteriaceae; Buchnera (TaxID: 372461) [NEWT/ NCBI]
Description:	Buchnera aphidicola subsp. Cinara cedri is the primary endosymbiont of the aphid Cinara cedri. Its genome is composed of a 416380-base pair circular chromosome plus a 6045-base pair plasmid for leucine. This genome is ca. 200 kilobases smaller than the other Buchnera aphidicola genomes sequenced so far. Gene loss is the main cause of genome shrinkage and affects all functional categories, although not evenly. Gene losses affecting biosynthesis of nucleotides, cofactors, cell envelope and transport are particularly important. It is no longer able to synthesize tryptophan, it is unable to provide riboflavin to its host and lacks most of the transporters encoded by other B.aphidicola genomes. Buchnera aphidicola subsp. Cinara cedri could be undergoing a process of genome degradation and functional replacement by the coexisting secondary endosymbiont Serratia symbiotica.
Properties:	Presence of flagella: not known Interaction: Animal endosymbiont in Aphids (obligate endosymbiont) Number of membranes: not known Number of inteins:0
Statistics:	Number of BUCCC entries in the UniProt Knowledgebase: 362 (121 in UniProtKB/Swiss-Prot + 241 in UniProtKB/TrEMBL)

Genome structure:	• Chromosome EMBL accession number CP000263 (circular; 416,380 bp) (download entry) (download Genome Reviews). • Plasmid pLeu-BCc EMBL accession number AY438025 (linear; 6,054 bp) (download entry) (download Genome Reviews).
Reference(s):	[1] PubMed=17038625; [ NCBI , EBI , Israel , Japan ] Perez-Brocal V., Gil R., Ramos S., Lamelas A., Postigo M., Michelena J.M., Silva F.J., Moya A., Latorre A. ; "A small microbial genome: the end of a long symbiotic relationship?"; Science 314:312-313(2006). [2] PubMed=16413149; [ NCBI , EBI , Israel , Japan ] Gil R., Sabater-Munoz B., Perez-Brocal V., Silva F.J., Latorre A. ; "Plasmids in the aphid endosymbiont Buchnera aphidicola with the smallest genomes. A puzzling evolutionary story."; Gene 370:17-25(2006).
Web links:	coliBASE: http://xbase.bham.ac.uk/colibase/genome.pl?id=973 Entrez Genome Project: http://www.ncbi.nlm.nih.gov/sites/entrez?Db=genomeprj&Cmd=DetailsSearch&Term=txid372461%5Borgn%5D GIB (DDBJ): http://gib.genes.nig.ac.jp/single/index.php?spid=Baph_CC PEDANT: http://pedant.gsf.de:3345/pedant3htmlview/pedant3view?Method=start_method&Db=p3_p16372_Buc_aphid  EBI Proteome Analysis page

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