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2017 ; 10
(ä): 24
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The Dark Proteome Database
#MMPMID28736578
Perdigão N
; Rosa AC
; O'Donoghue SI
BioData Min
2017[]; 10
(ä): 24
PMID28736578
show ga
BACKGROUND: Recently we surveyed the dark-proteome, i.e., regions of proteins
never observed by experimental structure determination and inaccessible to
homology modelling. Surprisingly, we found that most of the dark proteome could
not be accounted for by conventional explanations (e.g., intrinsic disorder,
transmembrane domains, and compositional bias), and that nearly half of the dark
proteome comprised dark proteins, in which the entire sequence lacked similarity
to any known structure. In this paper we will present the Dark Proteome Database
(DPD) and associated web services that provide access to updated information
about the dark proteome. RESULTS: We assembled DPD from several external web
resources (primarily Aquaria and Swiss-Prot) and stored it in a relational
database currently containing ~10 million entries and occupying ~2 GBytes of disk
space. This database comprises two key tables: one giving information on the
?darkness? of each protein, and a second table that breaks each protein into dark
and non-dark regions. In addition, a second version of the database is created
using also information from the Protein Model Portal (PMP) to determine darkness.
To provide access to DPD, a web server has been implemented giving access to all
underlying data, as well as providing access to functional analyses derived from
these data. CONCLUSIONS: Availability of this database and its web service will
help focus future structural and computational biology efforts to study the dark
proteome, thus providing a basis for understanding a wide variety of biological
functions that currently remain unknown. AVAILABILITY AND IMPLEMENTATION: DPD is
available at http://darkproteome.ws. The complete database is also available upon
request. Data use is permitted via the Creative Commons Attribution-NonCommercial
International license (http://creativecommons.org/licenses/by-nc/4.0/).
ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article
(doi:10.1186/s13040-017-0144-6) contains supplementary material, which is
available to authorized users.