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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> 2,637
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>UP000007954
Taxonomy768065 - Haloquadratum walsbyi (strain DSM 16854 / JCM 12705 / C23)
StrainDSM 16854 / JCM 12705 / C23
Last modifiedJuly 24, 2020
Genome assembly and annotationi <p>Identifier for the genome assembly (<a href="">more...</a>)</p> GCA_000237865.1 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 Haloquadratum walsbyi (strain DSM 16790 / HBSQ001) 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:92.6%[S:92.3%,D:0.3%],F:0.1%,M:7.3%,n:1039 haloferacales_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> Close to Standard

Haloquadratum walsbyi is a square, non-motile, pigmented halophilic archaea that dominates in most thalassic NaCl-saturated environments, reaching population densities of over 10(7) cells per ml. Two unique features of these extremely fragile cells are the wafer-like rectangular shape, usually between 2 and 5 um, and a cell thickness of not more than 0.1 um. It requires >14% salt for growth. Cells are challenged by the sub-lethal conditions of an extremely high MgCl(2) concentration and high solar irradiance and suffer severe desiccation stress. Special mechanisms are therefore required to maintain optimal water activity within the cell and at the cell surface. Additionally the amount of dissolved oxygen decreases to near anoxia and some essential nutrients (e.g. phosphates) become unavailable due to their complexing with Mg(2+). H.walsbyi encodes the largest archaeal protein known to date, halomucin (9159 residues), which is similar to animal mucins. Animal mucins play an important role in protecting various tissues against desiccation or harsh chemical conditions. Halomucin is thought to be exported outside the cell, where it may be glycosylated, sulfated and sialated; H.walsbyi is the first archaea identified that is probably able to synthesize sialic acid. These modifications, along with the potential capacity to synthesize and poly-gamma-glutamate capsule, probably create an aqueous shield and in the case of the capsule may also help maintain the unique shape of the cell. C23 is the type strain for the species, and was isolated from an Australian solar saltern. It differs from the other sequenced H.walsybi (strain HBSQ001, HALWD, isolated in Spain) in possessing a conventional two-layered structure consisting of the cell membrane covered by a single, external protein S-layer. HALWD has an atypical triple-layered cell wall. Despite being isolated approximately 17,000 km apart 84% of the 2 genomes are 98.6% identical. The genomes have evolved by uptake and precise integration of foreign DNA, probably originating from close relatives. Change is also driven by numerous types of mobile genetic elements, most of which seem to be active. It is probably subject to rapid global dispersal, possibly by airborne salt particles or migratory birds (adapted from PMID 21701686).

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

Component nameGenome Accession(s)
Component representationProteins
Plasmid PL10069
Plasmid PL6A6
Plasmid PL6B6


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