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Entry version 24 (18 Sep 2019)
Sequence version 1 (16 Apr 2014)
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Protein

ESX-1 secretion-associated protein EspA

Gene

espA

Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Required for secretion of EsxA (ESAT-6) and EsxB (CFP-10) and for virulence. Involved in translocation of bacteria from the host (human) phagolysosome to the host cytoplasm (PubMed:17604718).3 Publications

Miscellaneous

Maintenance of wild-type levels of EspA requires both EspC and EspD.1 Publication
Has been postulated to mediate virulence through maintenance of mycobacterial cell surface integrity (PubMed:20585630), but studies of detergent sensitivity of various strains and mutants indicate that EspACD and ESX-1 deficiency does not impact the cell surface integrity (PubMed:24078612).2 Publications

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Biological processVirulence

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MTBH37RV:G185E-7895-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
ESX-1 secretion-associated protein EspACurated
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:espA1 Publication
Ordered Locus Names:Rv3616c
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiMycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83332 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacteriumMycobacterium tuberculosis complex
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001584 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

Organism-specific databases

Mycobacterium tuberculosis strain H37Rv genome database

More...
TubercuListi
Rv3616c

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Secreted

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the ‘Pathology and Biotech’ section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Deletion mutants fail to secrete EsxA and EsxB, and are as attenuated as ESX-1 mutants in virulence assays (PubMed:16030141). Bacteria no longer translocate from the phagolysosome to the cytosol of host (human) cells; bacteria replicate in phagolysosome (PubMed:17604718). Host (human) cells no longer produce cytokine IP-10 (CXCL10) upon infection, but continue to produce IL-1 beta (IL1B) (PubMed:26048138).3 Publications

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi5F → R: Severely destabilizes EspA and blocks ESX-1 secretion in vitro, but does not impact the cytotoxicity in cellular models of infection. Can induce proinflammatory responses in THP-1 cells and is as virulent as wild-type during the acute phase of infection in mice. 1 Publication1
Mutagenesisi41K → A: Severely destabilizes EspA and blocks ESX-1 secretion in vitro, but does not impact the cytotoxicity in cellular models of infection. Can induce proinflammatory responses in THP-1 cells and is as virulent as wild-type during the acute phase of infection in mice. 1 Publication1
Mutagenesisi50F → R: Severely destabilizes EspA and blocks ESX-1 secretion in vitro. Attenuated in cellular models of tuberculosis infection. 1 Publication1
Mutagenesisi55W → R: Impairs EsxA and EsxB secretion in vitro. Modest impact on EspD stability and secretion. Attenuated in cellular models of tuberculosis infection. 1 Publication1
Mutagenesisi57G → R: Impairs EsxA and EsxB secretion in vitro. Modest impact on EspD stability and secretion. Attenuated in cellular models of tuberculosis infection. 1 Publication1
Mutagenesisi62K → A: Severely destabilizes EspA and blocks ESX-1 secretion in vitro. Attenuated in cellular models of tuberculosis infection. 1 Publication1
Mutagenesisi138C → A: Does not affect secretion, but inhibits disulfide bond formation. Alters mycobacterial cell wall integrity and significantly attenuates virulence. 1 Publication1

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003939031 – 392ESX-1 secretion-associated protein EspAAdd BLAST392

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi138Interchain1 Publication

Keywords - PTMi

Disulfide bond

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P9WJE1

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Transcriptionally activated by EspR (PubMed:18685700, PubMed:22389481, PubMed:25536998). Repressed by the MprB/MprA two-component system, by direct regulation and via EspR (PubMed:23104803, PubMed:25536998). Up-regulated by the PhoP/PhoR two-component system, via EspR (PubMed:16573683, PubMed:25536998).5 Publications

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer; disulfide-linked (PubMed:20585630). An artificial EsxB-EsxA heterodimer interacts with EspA (PubMed:19854905).

2 Publications

Protein-protein interaction databases

Protein interaction database and analysis system

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IntActi
P9WJE1, 1 interactor

STRING: functional protein association networks

More...
STRINGi
83332.Rv3616c

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Phylogenomic databases

Identification of Orthologs from Complete Genome Data

More...
OMAi
LEEVWEF

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P9WJE1-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSRAFIIDPT ISAIDGLYDL LGIGIPNQGG ILYSSLEYFE KALEELAAAF
60 70 80 90 100
PGDGWLGSAA DKYAGKNRNH VNFFQELADL DRQLISLIHD QANAVQTTRD
110 120 130 140 150
ILEGAKKGLE FVRPVAVDLT YIPVVGHALS AAFQAPFCAG AMAVVGGALA
160 170 180 190 200
YLVVKTLINA TQLLKLLAKL AELVAAAIAD IISDVADIIK GTLGEVWEFI
210 220 230 240 250
TNALNGLKEL WDKLTGWVTG LFSRGWSNLE SFFAGVPGLT GATSGLSQVT
260 270 280 290 300
GLFGAAGLSA SSGLAHADSL ASSASLPALA GIGGGSGFGG LPSLAQVHAA
310 320 330 340 350
STRQALRPRA DGPVGAAAEQ VGGQSQLVSA QGSQGMGGPV GMGGMHPSSG
360 370 380 390
ASKGTTTKKY SEGAAAGTED AERAPVEADA GGGQKVLVRN VV
Length:392
Mass (Da):39,888
Last modified:April 16, 2014 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i82BBA8DD99D6F567
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AL123456 Genomic DNA Translation: CCP46439.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A70957

NCBI Reference Sequences

More...
RefSeqi
NP_218133.1, NC_000962.3
WP_003912265.1, NZ_NVQJ01000056.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CCP46439; CCP46439; Rv3616c

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
885377

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mtu:Rv3616c
mtv:RVBD_3616c

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AL123456 Genomic DNA Translation: CCP46439.1
PIRiA70957
RefSeqiNP_218133.1, NC_000962.3
WP_003912265.1, NZ_NVQJ01000056.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

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SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

IntActiP9WJE1, 1 interactor
STRINGi83332.Rv3616c

Proteomic databases

PaxDbiP9WJE1

Genome annotation databases

EnsemblBacteriaiCCP46439; CCP46439; Rv3616c
GeneIDi885377
KEGGimtu:Rv3616c
mtv:RVBD_3616c

Organism-specific databases

TubercuListiRv3616c

Phylogenomic databases

OMAiLEEVWEF

Enzyme and pathway databases

BioCyciMTBH37RV:G185E-7895-MONOMER

Family and domain databases

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiESPA_MYCTU
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P9WJE1
Secondary accession number(s): L0TDB5, O06267, Q7D572
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 16, 2014
Last sequence update: April 16, 2014
Last modified: September 18, 2019
This is version 24 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh
    Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh: entries and gene names
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