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Proteinsi <p>Number of protein entries associated with this proteome: UniProtKB entries for regular proteomes or UniParc entries for redundant proteomes (<a href="/help/proteome%5Fredundancy">more...</a>)</p> 562
Gene counti <p>This is the total number of unique genes found in the proteome set, algorithmically computed. For each gene, a single representative protein sequence is chosen from the proteome. Where possible, reviewed (Swiss-Prot) protein sequences are chosen as the representatives.</p> - Download one protein sequence per gene (FASTA)
Proteome IDi <p>The proteome identifier (UPID) is the unique identifier assigned to the set of proteins that constitute the <a href="">proteome</a>. It consists of the characters 'UP' followed by 9 digits, is stable across releases and can therefore be used to cite a UniProt proteome.<p><a href='/help/proteome_id' target='_top'>More...</a></p>UP000000416
Taxonomy198804 - Buchnera aphidicola subsp. Schizaphis graminum (strain Sg)
Last modifiedMarch 7, 2021
Genome assembly and annotationi <p>Identifier for the genome assembly (<a href="">more...</a>)</p> GCA_000007365.1 from ENA/EMBL full
Pan proteomei <p>A pan proteome is the full set of proteins thought to be expressed by a group of highly related organisms (e.g. multiple strains of the same bacterial species).<p><a href='/help/pan_proteomes' target='_top'>More...</a></p> This proteome is part of the Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon pisum symbiotic bacterium) pan proteome (fasta)
Buscoi <p>The Benchmarking Universal Single-Copy Ortholog (BUSCO) assessment tool is used, for eukaryotic and bacterial proteomes, to provide quantitative measures of UniProt proteome data completeness in terms of expected gene content. BUSCO scores include percentages of complete (C) single-copy (S) genes, complete (C) duplicated (D) genes, fragmented (F) and missing (F) genes, as well as the total number of orthologous clusters (n) used in the BUSCO assessment.</p> C:83.4%[S:83.2%,D:0.2%],F:1.6%,M:15%,n:440 enterobacterales_odb10
Completenessi <p>Complete Proteome Detector (CPD) is an algorithm which employs statistical evaluation of the completeness and quality of proteomes in UniProt, by looking at the sizes of taxonomically close proteomes. Possible values are 'Standard', 'Close to Standard' and 'Outlier'.</p> Standard

Pea aphids are a major agricultural pest, feeding on a variety of legumes (Fabaceae) worldwide. Plant phloem sap feeding insects such as pea aphids depend on their obligate endosymbionts to furnish them with essential amino acids and/or vitamin cofactors. Pea aphids have only one major, often sole microbial symbiont, Buchnera, a maternally-transmitted gammaproteobacteria related to the Enterobacteriaceae. Depending on the aphid-Buchnera pair the capacity to synthesize at least 5 essential amino acids can be shared between the 2 partners. The aphid-Buchnera association has persisted for at least 160 million years and is obligate for both partners. This strain is an endosymbiont of the aphid Schizaphis graminum. It has 2 plasmids; pLeu-Sg (AC AF041836) and a Trp plasmid, which is represented by AC Z21938 (adapted from PMIDs 12089438 and 21392141). Buchnera from A. pisum and S. graminum have a three membrane system (one originating from the host, see PMID 22229056).

Componentsi <p>Genomic components encoding the proteome</p>

Component nameGenome Accession(s)
Component representationProteins
Plasmid pLeu-Sg7
Plasmid pBsc2


  1. "Genetic characterization of plasmids containing genes encoding enzymes of leucine biosynthesis in endosymbionts (Buchnera) of aphids."
    Baumann L., Baumann P., Moran N.A., Sandstroem J.P., Thao M.L.
    J. Mol. Evol. 48:77-85(1999) [PubMed] [Europe PMC] [Abstract]
  2. "Amplification of trpEG: adaptation of Buchnera aphidicola to an endosymbiotic association with aphids."
    Lai C.-Y., Baumann L., Baumann P.
    Proc. Natl. Acad. Sci. U.S.A. 91:3819-3823(1994) [PubMed] [Europe PMC] [Abstract]
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