PaperBLAST – Find papers about a protein or its homologs

 

PaperBLAST

PaperBLAST Hits for CSW01_03560 (86 a.a., MANNKSAKKR...)

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 94 similar proteins in the literature:

VC0679 ribosomal protein S20 from Vibrio cholerae O1 biovar eltor str. N16961
100% identity, 100% coverage

B7C60_RS04755 30S ribosomal protein S20 from Vibrio fujianensis
95% identity, 100% coverage

VP0531 ribosomal protein S20 from Vibrio parahaemolyticus RIMD 2210633
94% identity, 100% coverage

SG0412 30S ribosomal protein S20 from Sodalis glossinidius str. 'morsitans'
76% identity, 99% coverage

A0KG36 Small ribosomal subunit protein bS20 from Aeromonas hydrophila subsp. hydrophila (strain ATCC 7966 / DSM 30187 / BCRC 13018 / CCUG 14551 / JCM 1027 / KCTC 2358 / NCIMB 9240 / NCTC 8049)
80% identity, 99% coverage

FTH_0066 ribosomal protein S20 from Francisella tularensis subsp. holarctica OSU18
69% identity, 96% coverage

HI0965 30S ribosomal protein S20 from Haemophilus influenzae Rd KW20
67% identity, 99% coverage

SupS / b0023 30S ribosomal subunit protein S20 from Escherichia coli K-12 substr. MG1655 (see 28 papers)
rpsT / P0A7U7 30S ribosomal subunit protein S20 from Escherichia coli (strain K12) (see 26 papers)
RS20_ECOLI / P0A7U7 Small ribosomal subunit protein bS20; 30S ribosomal protein S20 from Escherichia coli (strain K12) (see 8 papers)
rpsT / EW|b0023 30S ribosomal protein S20 from Escherichia coli K12 (see 13 papers)
ECs0026 30S ribosomal subunit protein S20 from Escherichia coli O157:H7 str. Sakai
NP_414564 30S ribosomal subunit protein S20 from Escherichia coli str. K-12 substr. MG1655
b0023 30S ribosomal protein S20 from Escherichia coli str. K-12 substr. MG1655
c0027 30S ribosomal protein S20 from Escherichia coli CFT073
S0022 30S ribosomal protein S20 from Shigella flexneri 2a str. 2457T
Z0027 30S ribosomal subunit protein S20 from Escherichia coli O157:H7 EDL933
Z_RS00125 30S ribosomal protein S20 from Escherichia coli O157:H7 str. EDL933
71% identity, 99% coverage

HSM_0741 30S ribosomal protein S20 from Histophilus somni 2336
HSM_0741 30S ribosomal protein S20 from Haemophilus somnus 2336
67% identity, 99% coverage

NP_459048 30S ribosomal subunit protein S20 from Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
P0A2B1 Small ribosomal subunit protein bS20 from Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
SEN0043 30S ribosomal protein S20 from Salmonella enterica subsp. enterica serovar Enteritidis str. P125109
SC0037 30S ribosomal subunit protein S20 from Salmonella enterica subsp. enterica serovar Choleraesuis str. SC-B67
SENTW_4750 30S ribosomal protein S20 from Salmonella enterica subsp. enterica serovar Weltevreden str.
70% identity, 99% coverage

PMCN03_2059 30S ribosomal protein S20 from Pasteurella multocida subsp. multocida str. HB03
67% identity, 99% coverage

8a3lT / P0A7U7 8a3lT (see paper)
71% identity, 99% coverage

PA4563 30S ribosomal protein S20 from Pseudomonas aeruginosa PAO1
67% identity, 95% coverage

EAM_RS03205 30S ribosomal protein S20 from Erwinia amylovora ATCC 49946
EAMY_2940 30S ribosomal protein S20 from Erwinia amylovora CFBP1430
66% identity, 99% coverage

FXO12_14490 30S ribosomal protein S20 from Pseudomonas sp. J380
65% identity, 93% coverage

PP0600, PP_0600 ribosomal protein S20 from Pseudomonas putida KT2440
Pput_0641 30S ribosomal protein S20 from Pseudomonas putida F1
65% identity, 93% coverage

VT47_03545 30S ribosomal protein S20 from Pseudomonas syringae pv. syringae
65% identity, 93% coverage

ACIAD1389 30S ribosomal protein S20 from Acinetobacter sp. ADP1
64% identity, 97% coverage

A1S_1617 30S ribosomal protein S20 from Acinetobacter baumannii ATCC 17978
62% identity, 98% coverage

7m4ut / B7I5N9 A. Baumannii ribosome-eravacycline complex: 30s (see paper)
61% identity, 99% coverage

8rdvTo / A0A0M4T3R2 8rdvTo (see paper)
60% identity, 98% coverage

APL_1558 30S ribosomal protein S20 from Actinobacillus pleuropneumoniae L20
66% identity, 99% coverage

lpg2636 30S ribosomal protein S20 from Legionella pneumophila subsp. pneumophila str. Philadelphia 1
lpp2689 30S ribosomal subunit protein S20 from Legionella pneumophila str. Paris
58% identity, 98% coverage

PD1440 30S ribosomal protein S20 from Xylella fastidiosa Temecula1
XF2421 30S ribosomal protein S20 from Xylella fastidiosa 9a5c
57% identity, 97% coverage

NGO1493 putative ribosomal protein S20 from Neisseria gonorrhoeae FA 1090
53% identity, 99% coverage

BU151 30S ribosomal protein S20 from Buchnera aphidicola str. APS (Acyrthosiphon pisum)
54% identity, 93% coverage

BP2773 30S ribosomal protein S20 from Bordetella pertussis Tohama I
NP_881377 30s ribosomal protein s20 from Bordetella pertussis Tohama I
52% identity, 99% coverage

OFBG_01579 30S ribosomal protein S20 from Oxalobacter formigenes OXCC13
57% identity, 88% coverage

G372_RS0102750 30S ribosomal protein S20 from Thioalkalivibrio thiocyanoxidans ARh2
51% identity, 97% coverage

OFAG_01539 30S ribosomal protein S20 from Oxalobacter paraformigenes
56% identity, 88% coverage

A6T4F8 Small ribosomal subunit protein bS20 from Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578)
65% identity, 70% coverage

Bfl116 30S ribosomal protein S20 from Candidatus Blochmannia floridanus
Q7VQL2 Small ribosomal subunit protein bS20 from Blochmanniella floridana
49% identity, 98% coverage

Dshi_3371 ribosomal protein S20 from Dinoroseobacter shibae DFL 12
48% identity, 98% coverage

Rmet_2904 30S ribosomal protein S20 from Cupriavidus metallidurans CH34
50% identity, 98% coverage

BPSL0871 putative 30S ribosomal protein S20 from Burkholderia pseudomallei K96243
BTH_I0735 ribosomal protein S20 from Burkholderia thailandensis E264
49% identity, 93% coverage

bglu_1g29160 30S ribosomal protein S20 from Burkholderia glumae BGR1
49% identity, 95% coverage

Pden_4514 ribosomal protein S20 from Paracoccus denitrificans PD1222
49% identity, 97% coverage

BA_4994 Ribosomal_S20p, Ribosomal protein S20 from Bacillus anthracis str. A2012
BC4320, NP_834032 SSU ribosomal protein S20P from Bacillus cereus ATCC 14579
BC_4320 30S ribosomal protein S20 from Bacillus cereus ATCC 14579
51% identity, 99% coverage

BMEI1944 SSU ribosomal protein S20P from Brucella melitensis 16M
BAB1_2186 Ribosomal protein S20 from Brucella melitensis biovar Abortus 2308
48% identity, 98% coverage

BCAL2765 30S ribosomal protein S20 from Burkholderia cenocepacia J2315
45% identity, 96% coverage

RHE_RS01805 30S ribosomal protein S20 from Rhizobium etli CFN 42
44% identity, 93% coverage

FN1879 SSU ribosomal protein S20P from Fusobacterium nucleatum subsp. nucleatum ATCC 25586
41% identity, 96% coverage

ZMO1358 30S ribosomal protein S20 from Zymomonas mobilis subsp. mobilis ZM4
43% identity, 99% coverage

Swit_4886 30S ribosomal protein S20 from Sphingomonas wittichii RW1
50% identity, 99% coverage

RLV_7380 30S ribosomal protein S20 from Rhizobium leguminosarum bv. viciae
43% identity, 93% coverage

8crxT / Q6A9B3 8crxT (see paper)
46% identity, 97% coverage

RB7022 probable 30S ribosomal protein S20 from Pirellula sp. 1
RB7022 30S ribosomal protein S20 from Rhodopirellula baltica SH 1
46% identity, 92% coverage

RS20_BACSU / P21477 Small ribosomal subunit protein bS20; 30S ribosomal protein S20; BS20 from Bacillus subtilis (strain 168) (see paper)
BSU25550 30S ribosomal protein S20 from Bacillus subtilis subsp. subtilis str. 168
41% identity, 98% coverage

NCgl2261 30S ribosomal protein S20 from Corynebacterium glutamicum ATCC 13032
cg2573 30S ribosomal protein S20 from Corynebacterium glutamicum ATCC 13032
47% identity, 99% coverage

Atu0323 30S ribosomal protein S20 from Agrobacterium tumefaciens str. C58 (Cereon)
41% identity, 98% coverage

8buut / P21477 8buut (see paper)
40% identity, 98% coverage

MSMEG_4571 ribosomal protein S20 from Mycobacterium smegmatis str. MC2 155
MSMEG_4571 30S ribosomal protein S20 from Mycolicibacterium smegmatis MC2 155
42% identity, 100% coverage

ruthe_02250 30S ribosomal protein S20 from Rubellimicrobium thermophilum DSM 16684
43% identity, 83% coverage

8fmwT / P49394 8fmwT (see paper)
BB0233 30S ribosomal protein S20 from Borrelia burgdorferi B31
46% identity, 92% coverage

Q8A276 Small ribosomal subunit protein bS20 from Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 / VPI-5482 / E50)
42% identity, 100% coverage

MAV_1770 ribosomal protein S20 from Mycobacterium avium 104
43% identity, 100% coverage

SMc01152 30S RIBOSOMAL PROTEIN S20 from Sinorhizobium meliloti 1021
42% identity, 98% coverage

6dzi7 / A0R102 6dzi7 (see paper)
41% identity, 99% coverage

SCO2563 30s ribosomal protein S20 from Streptomyces coelicolor A3(2)
44% identity, 98% coverage

RS20_RHOPA / Q6N0C7 Small ribosomal subunit protein bS20; 30S ribosomal protein S20; RRP-S20 from Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009) (see paper)
RPA4836 30S ribosomal protein S20 from Rhodopseudomonas palustris CGA009
42% identity, 98% coverage

YP_003432481 ribosomal protein S20 from Hydrogenobacter thermophilus TK-6
39% identity, 88% coverage

DVU1896 ribosomal protein S20 from Desulfovibrio vulgaris Hildenborough
38% identity, 99% coverage

CKC_RS00375 30S ribosomal protein S20 from Candidatus Liberibacter solanacearum CLso-ZC1
39% identity, 88% coverage

Mb2435 PROBABLE 30S RIBOSOMAL PROTEIN S20 RPST from Mycobacterium bovis AF2122/97
MT2485 30S ribosomal protein S20 from Mycobacterium tuberculosis CDC1551
Rv2412 30S ribosomal protein S20 from Mycobacterium tuberculosis H37Rv
42% identity, 100% coverage

STER_RS04185 30S ribosomal protein S20 from Streptococcus thermophilus LMD-9
43% identity, 97% coverage

PG1723 ribosomal protein S20 from Porphyromonas gingivalis W83
PGN_0394 probable 30S ribosomal protein S20 from Porphyromonas gingivalis ATCC 33277
42% identity, 100% coverage

Q71ZJ0 Small ribosomal subunit protein bS20 from Listeria monocytogenes serotype 4b (strain F2365)
lmo1480 ribosomal protein S20 from Listeria monocytogenes EGD-e
47% identity, 97% coverage

SM12261_RS04005 30S ribosomal protein S20 from Streptococcus mitis NCTC 12261
SPD_0732 ribosomal protein S20 from Streptococcus pneumoniae D39
41% identity, 97% coverage

AS87_RS07650 30S ribosomal protein S20 from Riemerella anatipestifer Yb2
39% identity, 100% coverage

CTL0881 SSU ribosomal protein S20P from Chlamydia trachomatis 434/Bu
B0B8J2 Small ribosomal subunit protein bS20 from Chlamydia trachomatis serovar L2 (strain ATCC VR-902B / DSM 19102 / 434/Bu)
40% identity, 74% coverage

F452_RS0103275 30S ribosomal protein S20 from Porphyromonas gulae DSM 15663
41% identity, 100% coverage

SSA_1032 30S ribosomal protein subunit S20, putative from Streptococcus sanguinis SK36
41% identity, 97% coverage

8uu4t / A0A660JML5 8uu4t (see paper)
47% identity, 94% coverage

7msct / P9WH41 70SIC in complex with MtbEttA at Pre_R0 state (see paper)
41% identity, 99% coverage

C6B32_08820 30S ribosomal protein S20 from Campylobacter fetus subsp. testudinum
36% identity, 98% coverage

CFF8240_1718 ribosomal protein S20 from Campylobacter fetus subsp. fetus 82-40
36% identity, 98% coverage

CJJ81176_1598 ribosomal protein S20 from Campylobacter jejuni subsp. jejuni 81-176
37% identity, 99% coverage

RR20_SPIOL / P82130 Small ribosomal subunit protein bS20c; 30S ribosomal protein S20, chloroplastic from Spinacia oleracea (Spinach) (see 2 papers)
38% identity, 40% coverage

LLNZ_09890 30S ribosomal protein S20 from Lactococcus cremoris subsp. cremoris NZ9000
40% identity, 97% coverage

5mmjt Structure of the small subunit of the chloroplast ribosome (see paper)
38% identity, 69% coverage

M6_Spy0935 30S ribosomal protein S20 from Streptococcus pyogenes MGAS10394
40% identity, 97% coverage

L0397 30S ribosomal protein S20 from Lactococcus lactis subsp. lactis Il1403
42% identity, 97% coverage

FE46_RS09040, FP1397 30S ribosomal protein S20 from Flavobacterium psychrophilum
38% identity, 100% coverage

Q9Z7F2 Small ribosomal subunit protein bS20 from Chlamydia pneumoniae
35% identity, 81% coverage

RR20_ARATH / Q9ASV6 Small ribosomal subunit protein bS20c; 30S ribosomal protein S20, chloroplastic from Arabidopsis thaliana (Mouse-ear cress) (see paper)
AT3G15190 chloroplast 30S ribosomal protein S20, putative from Arabidopsis thaliana
40% identity, 37% coverage

4v61AT 4v61AT (see paper)
40% identity, 73% coverage

Q831Q7 Small ribosomal subunit protein bS20 from Enterococcus faecalis (strain ATCC 700802 / V583)
EF2443 ribosomal protein S20 from Enterococcus faecalis V583
IUJ47_RS14095 30S ribosomal protein S20 from Enterococcus faecalis
42% identity, 92% coverage

B2I23_RS02910 30S ribosomal protein S20 from Candidatus Liberibacter asiaticus
38% identity, 88% coverage

Q8DZZ2 Small ribosomal subunit protein bS20 from Streptococcus agalactiae serotype V (strain ATCC BAA-611 / 2603 V/R)
38% identity, 92% coverage

SACOL1642 ribosomal protein S20 from Staphylococcus aureus subsp. aureus COL
Q99TR3 Small ribosomal subunit protein bS20 from Staphylococcus aureus (strain Mu50 / ATCC 700699)
SA1414 30S ribosomal protein S20 from Staphylococcus aureus subsp. aureus N315
SAUSA300_1545 30S ribosomal protein S20 from Staphylococcus aureus subsp. aureus USA300_FPR3757
EKM74_RS01310 30S ribosomal protein S20 from Staphylococcus aureus
40% identity, 95% coverage

G7LDS2 30S ribosomal protein S20 from Medicago truncatula
34% identity, 43% coverage

BL0849 30S ribosomal protein S20 from Bifidobacterium longum NCC2705
50% identity, 100% coverage

6w6pt / A0A1B4XQJ7 6w6pt (see paper)
42% identity, 90% coverage

SUB0956 30S ribosomal protein S20 from Streptococcus uberis 0140J
39% 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 793,807 different protein sequences to 1,259,118 scientific articles. Searches against EuropePMC were last performed on March 13 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