PaperBLAST – Find papers about a protein or its homologs

 

PaperBLAST

PaperBLAST Hits for Q81GN2 UPF0234 protein BC_1159 (Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711)) (163 a.a., MAKDSSFDIV...)

Other sequence analysis tools:

Find functional residues: SitesBLAST

Search for conserved domains

Find the best match in UniProt

Compare to protein structures

Predict transmenbrane helices: Phobius

Predict protein localization: PSORTb

Find homologs in fast.genomics

Fitness BLAST: loading...

Found 41 similar proteins in the literature:

Q81GN2 UPF0234 protein BC_1159 from Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711)
100% identity, 100% coverage

EFD32_0973 YajQ family cyclic di-GMP-binding protein from Enterococcus faecalis D32
59% identity, 99% coverage

Clocel_3875 YajQ family cyclic di-GMP-binding protein from Clostridium cellulovorans 743B
51% identity, 100% coverage

BCAL2769 hypothetical protein from Burkholderia cenocepacia J2315
49% identity, 97% coverage

all4662 hypothetical protein from Nostoc sp. PCC 7120
44% identity, 100% coverage

P9WFK9 UPF0234 protein Rv0566c from Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
MT0592 hypothetical protein from Mycobacterium tuberculosis CDC1551
Rv0566c hypothetical protein from Mycobacterium tuberculosis H37Rv
48% identity, 98% coverage

MAP4063c hypothetical protein from Mycobacterium avium subsp. paratuberculosis str. k10
46% identity, 98% coverage

OFBG_01674 YajQ family cyclic di-GMP-binding protein from Oxalobacter formigenes OXCC13
46% identity, 97% coverage

Q9F2U7 UPF0234 protein SCO4614 from Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)
45% identity, 98% coverage

Bphy_0527 putative nucleotide-binding protein from Burkholderia phymatum STM815
49% identity, 97% coverage

Bmul_0741 YajQ family cyclic di-GMP-binding protein from Burkholderia multivorans ATCC 17616
49% identity, 97% coverage

MSMEG_1165 hypothetical protein from Mycobacterium smegmatis str. MC2 155
A0QRM0 UPF0234 protein MSMEG_1165/MSMEI_1134 from Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155)
MSMEG_1165 YajQ family cyclic di-GMP-binding protein from Mycolicibacterium smegmatis MC2 155
45% identity, 98% coverage

HI1034 conserved hypothetical protein from Haemophilus influenzae Rd KW20
P44096 UPF0234 protein HI_1034 from Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
44% identity, 97% coverage

1in0B / P44096 Yajq protein (hi1034) (see paper)
44% identity, 97% coverage

R2846_1298 YajQ family cyclic di-GMP-binding protein from Haemophilus influenzae R2846
43% identity, 97% coverage

PSPPH_4093 hypothetical protein from Pseudomonas syringae pv. phaseolicola 1448A
46% identity, 97% coverage

AL538_RS00950 YajQ family cyclic di-GMP-binding protein from Vibrio harveyi
42% identity, 97% coverage

VY92_RS09790 YajQ family cyclic di-GMP-binding protein from Avibacterium paragallinarum
44% identity, 97% coverage

PA4395 hypothetical protein from Pseudomonas aeruginosa PAO1
Q9HW11 UPF0234 protein PA4395 from Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)
45% identity, 97% coverage

YPC_3455 YajQ family cyclic di-GMP-binding protein from Yersinia pestis biovar Medievalis str. Harbin 35
YPO3170 nucleotide-binding protein from Yersinia pestis CO92
43% identity, 97% coverage

PflSS101_4316 YajQ family cyclic di-GMP-binding protein from Pseudomonas lactis
47% identity, 97% coverage

YajQ / b0426 nucleotide binding protein YajQ from Escherichia coli K-12 substr. MG1655 (see 6 papers)
YAJQ_ECOLI / P0A8E7 UPF0234 protein YajQ from Escherichia coli (strain K12) (see paper)
yajQ / MB|P0A8E7 UPF0234 protein yajQ from Escherichia coli K12 (see 6 papers)
NP_414960 nucleotide binding protein YajQ from Escherichia coli str. K-12 substr. MG1655
c0537 nucleotide-binding protein from Escherichia coli CFT073
44% identity, 97% coverage

PP1352 conserved hypothetical protein from Pseudomonas putida KT2440
44% identity, 97% coverage

AMK58_18090 YajQ family cyclic di-GMP-binding protein from Azospirillum brasilense
42% identity, 98% coverage

8k5qA / Q8ZRC9 Crystal structure of yajq stm0435 with c-di-gmp (see paper)
Q8ZRC9 UPF0234 protein YajQ from Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
STM0435 nucleotide-binding protein from Salmonella typhimurium LT2
43% identity, 97% coverage

plu3881 No description from Photorhabdus luminescens subsp. laumondii TTO1
42% identity, 97% coverage

XAC3671 conserved hypothetical protein from Xanthomonas axonopodis pv. citri str. 306
40% identity, 97% coverage

Q8Z8W2 UPF0234 protein YajQ from Salmonella typhi
43% identity, 97% coverage

XC_3703 hypothetical protein from Xanthomonas campestris pv. campestris str. 8004
Q4UQD0 UPF0234 protein XC_3703 from Xanthomonas campestris pv. campestris (strain 8004)
WP_011038715 YajQ family cyclic di-GMP-binding protein from Xanthomonas campestris pv. raphani
39% identity, 97% coverage

SYNW1816 conserved hypothetical protein from Synechococcus sp. WH 8102
41% identity, 99% coverage

PXO_03091 protein YajQ from Xanthomonas oryzae pv. oryzae PXO99A
38% identity, 92% coverage

XOO0711 hypothetical protein from Xanthomonas oryzae pv. oryzae KACC10331
38% identity, 97% coverage

VAS14_01951 YajQ family cyclic di-GMP-binding protein from Photobacterium angustum S14
41% identity, 97% coverage

Smlt4090 hypothetical protein from Stenotrophomonas maltophilia K279a
39% identity, 97% coverage

BVG93_01845 YajQ family cyclic di-GMP-binding protein from Serratia marcescens
40% identity, 97% coverage

ACIAD3137 conserved hypothetical protein from Acinetobacter sp. ADP1
42% identity, 97% coverage

SynWH7803_1823 hypothetical protein from Synechococcus sp. WH 7803
39% identity, 96% coverage

SAR11_0692 hypothetical protein from Candidatus Pelagibacter ubique HTCC1062
41% identity, 97% coverage

LPE509_01999 YajQ family cyclic di-GMP-binding protein from Legionella pneumophila subsp. pneumophila LPE509
36% identity, 97% coverage

VC_1508 YajQ family cyclic di-GMP-binding protein from Vibrio cholerae O1 biovar El Tor str. N16961
38% identity, 97% coverage

A0A3G4V556 UPF0234 protein ECB94_00660 from Vibrio mediterranei
37% identity, 97% coverage

New Search

For advice on how to use these tools together, see Interactive tools for functional annotation of bacterial genomes.

Statistics

The PaperBLAST database links 798,070 different protein sequences to 1,261,478 scientific articles. Searches against EuropePMC were last performed on May 12 2025.

How It Works

PaperBLAST builds a database of protein sequences that are linked to scientific articles. These links come from automated text searches against the articles in EuropePMC and from manually-curated information from GeneRIF, UniProtKB/Swiss-Prot, BRENDA, CAZy (as made available by dbCAN), BioLiP, CharProtDB, MetaCyc, EcoCyc, TCDB, REBASE, the Fitness Browser, and a subset of the European Nucleotide Archive with the /experiment tag. Given this database and a protein sequence query, PaperBLAST uses protein-protein BLAST to find similar sequences with E < 0.001.

To build the database, we query EuropePMC with locus tags, with RefSeq protein identifiers, and with UniProt accessions. We obtain the locus tags from RefSeq or from MicrobesOnline. We use queries of the form "locus_tag AND genus_name" to try to ensure that the paper is actually discussing that gene. Because EuropePMC indexes most recent biomedical papers, even if they are not open access, some of the links may be to papers that you cannot read or that our computers cannot read. We query each of these identifiers that appears in the open access part of EuropePMC, as well as every locus tag that appears in the 500 most-referenced genomes, so that a gene may appear in the PaperBLAST results even though none of the papers that mention it are open access. We also incorporate text-mined links from EuropePMC that link open access articles to UniProt or RefSeq identifiers. (This yields some additional links because EuropePMC uses different heuristics for their text mining than we do.)

For every article that mentions a locus tag, a RefSeq protein identifier, or a UniProt accession, we try to select one or two snippets of text that refer to the protein. If we cannot get access to the full text, we try to select a snippet from the abstract, but unfortunately, unique identifiers such as locus tags are rarely provided in abstracts.

PaperBLAST also incorporates manually-curated protein functions:

Except for GeneRIF and ENA, the curated entries include a short curated description of the protein's function. For entries from BioLiP, the protein's function may not be known beyond binding to the ligand. Many of these entries also link to articles in PubMed.

For more information see the PaperBLAST paper (mSystems 2017) or the code. You can download PaperBLAST's database here.

Changes to PaperBLAST since the paper was written:

Many of these changes are described in Interactive tools for functional annotation of bacterial genomes.

Secrets

PaperBLAST cannot provide snippets for many of the papers that are published in non-open-access journals. This limitation applies even if the paper is marked as "free" on the publisher's web site and is available in PubmedCentral or EuropePMC. If a journal that you publish in is marked as "secret," please consider publishing elsewhere.

Omissions from the PaperBLAST Database

Many important articles are missing from PaperBLAST, either because the article's full text is not in EuropePMC (as for many older articles), or because the paper does not mention a protein identifier such as a locus tag, or because of PaperBLAST's heuristics. If you notice an article that characterizes a protein's function but is missing from PaperBLAST, please notify the curators at UniProt or add an entry to GeneRIF. Entries in either of these databases will eventually be incorporated into PaperBLAST. Note that to add an entry to UniProt, you will need to find the UniProt identifier for the protein. If the protein is not already in UniProt, you can ask them to create an entry. To add an entry to GeneRIF, you will need an NCBI Gene identifier, but unfortunately many prokaryotic proteins in RefSeq do not have corresponding Gene identifers.

References

PaperBLAST: Text-mining papers for information about homologs.
M. N. Price and A. P. Arkin (2017). mSystems, 10.1128/mSystems.00039-17.

Europe PMC in 2017.
M. Levchenko et al (2017). Nucleic Acids Research, 10.1093/nar/gkx1005.

Gene indexing: characterization and analysis of NLM's GeneRIFs.
J. A. Mitchell et al (2003). AMIA Annu Symp Proc 2003:460-464.

UniProt: the universal protein knowledgebase.
The UniProt Consortium (2016). Nucleic Acids Research, 10.1093/nar/gkw1099.

BRENDA in 2017: new perspectives and new tools in BRENDA.
S. Placzek et al (2017). Nucleic Acids Research, 10.1093/nar/gkw952.

The EcoCyc database: reflecting new knowledge about Escherichia coli K-12.
I. M. Keeseler et al (2016). Nucleic Acids Research, 10.1093/nar/gkw1003.

The MetaCyc database of metabolic pathways and enzymes.
R. Caspi et al (2018). Nucleic Acids Research, 10.1093/nar/gkx935.

CharProtDB: a database of experimentally characterized protein annotations.
R. Madupu et al (2012). Nucleic Acids Research, 10.1093/nar/gkr1133.

The carbohydrate-active enzymes database (CAZy) in 2013.
V. Lombard et al (2014). Nucleic Acids Research, 10.1093/nar/gkt1178.

The Transporter Classification Database (TCDB): recent advances
M. H. Saier, Jr. et al (2016). Nucleic Acids Research, 10.1093/nar/gkv1103.

REBASE - a database for DNA restriction and modification: enzymes, genes and genomes.
R. J. Roberts et al (2015). Nucleic Acids Research, 10.1093/nar/gku1046.

Deep annotation of protein function across diverse bacteria from mutant phenotypes.
M. N. Price et al (2016). bioRxiv, 10.1101/072470.

by Morgan Price, Arkin group
Lawrence Berkeley National Laboratory