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UniProtKB - P0AFT2 (TCYL_ECOLI)

Entry version 110 (23 Feb 2022)
Sequence version 1 (20 Dec 2005)
Previous versions | rss
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Protein

L-cystine transport system permease protein TcyL

Gene

tcyL

Organism
Escherichia coli (strain K12)
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

Part of the ABC transporter complex TcyJLN involved in L-cystine import (PubMed:25139244, PubMed:20351115, PubMed:25837721, PubMed:26350134).

This high affinity cystine transporter is involved in resistance to oxidative stress by forming a L-cysteine/L-cystine shuttle system with the EamA transporter, which exports L-cysteine as reducing equivalents to the periplasm to prevent the cells from oxidative stress. Exported L-cysteine can reduce the periplasmic hydrogen peroxide to water, and then generated L-cystine is imported back into the cytoplasm via the TcyJLN complex (PubMed:20351115, PubMed:25837721).

Functions at low cystine concentrations (PubMed:26350134).

The system can also transport L-cysteine, diaminopimelic acid (DAP), djenkolate, lanthionine, D-cystine, homocystine, and it mediates accumulation of the toxic compounds L-selenaproline (SCA) and L-selenocystine (SeCys) (PubMed:25139244, PubMed:26350134).

Responsible for the translocation of the substrate across the membrane (Probable).

Curated4 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

The TcyJLN system is inhibited by L-cystine, L-cysteine, DL-2,6-diaminopimelic acid and L-cystathionine, and is stimulated by D-cysteine.1 Publication

<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 - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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 processAmino-acid transport, Transport

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:G7037-MONOMER

Protein family/group databases

Transport Classification Database

More...TCDBi		3.A.1.3.10, the atp-binding cassette (abc) superfamily

<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%5Fand%5Ftaxonomy%5Fsection">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:
L-cystine transport system permease protein TcyLCurated
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:tcyL1 Publication
Synonyms:yecS
Ordered Locus Names:b1918, JW1903
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiEscherichia coli (strain K12)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri83333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiBacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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
  • UP000000625 Componenti: Chromosome

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 22PeriplasmicCuratedAdd BLAST22
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei23 – 43HelicalSequence analysisAdd BLAST21
Topological domaini44 – 64CytoplasmicCuratedAdd BLAST21
Transmembranei65 – 85HelicalSequence analysisAdd BLAST21
Topological domaini86 – 182PeriplasmicCuratedAdd BLAST97
Transmembranei183 – 203HelicalSequence analysisAdd BLAST21
Topological domaini204 – 222Cytoplasmic1 PublicationAdd BLAST19

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

<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

Disruption of the gene decreases uptake of cystine (PubMed:25837721). The tcyL-tcyP double mutant cannot grow in the minimal medium containing L-cystine as a sole sulfur source is completely resistant to both L-selenaproline and L-selenocystine (PubMed:25837721, PubMed:25139244).2 Publications

<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 or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000602501 – 222L-cystine transport system permease protein TcyLAdd BLAST222

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P0AFT2

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

More...PaxDbi		P0AFT2

PRoteomics IDEntifications database

More...PRIDEi		P0AFT2

<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

Expression is induced by H2O2.1 Publication

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

The complex is composed of two ATP-binding proteins (TcyN), two transmembrane proteins (TcyL) and a solute-binding protein (TcyJ).

2 Publications

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		4261651, 23 interactors

ComplexPortal: manually curated resource of macromolecular complexes

More...ComplexPortali		CPX-4406, L-cystine ABC transporter complex

Protein interaction database and analysis system

More...IntActi		P0AFT2, 1 interactor

STRING: functional protein association networks

More...STRINGi		511145.b1918

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P0AFT2

Database of comparative protein structure models

More...ModBasei		Search...

<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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini19 – 207ABC transmembrane type-1PROSITE-ProRule annotationAdd BLAST189

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the binding-protein-dependent transport system permease family. HisMQ subfamily.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG0765, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_019602_1_4_6

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P0AFT2

Database for complete collections of gene phylogenies

More...PhylomeDBi		P0AFT2

Family and domain databases

Conserved Domains Database

More...CDDi		cd06261, TM_PBP2, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.3720.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR010065, AA_ABC_transptr_permease_3TM
IPR043429, ArtM/GltK/GlnP/TcyL/YhdX-like
IPR000515, MetI-like
IPR035906, MetI-like_sf

The PANTHER Classification System

More...PANTHERi		PTHR30614, PTHR30614, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00528, BPD_transp_1, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF161098, SSF161098, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR01726, HEQRo_perm_3TM, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS50928, ABC_TM1, 1 hit

<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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

P0AFT2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MQESIQLVID SLPFLLKGAG YTLQLSIGGM FFGLLLGFIL ALMRLSPIWP 
        60         70         80         90        100
VRWLARFYIS IFRGTPLIAQ LFMIYYGLPQ FGIELDPIPS AMIGLSLNTA 
       110        120        130        140        150
AYAAETLRAA ISSIDKGQWE AAASIGMTPW QTMRRAILPQ AARVALPPLS 
       160        170        180        190        200
NSFISLVKDT SLAATIQVPE LFRQAQLITS RTLEVFTMYL AASLIYWIMA 
       210        220 
TVLSTLQNHF ENQLNRQERE PK
Length:222
Mass (Da):24,801
Last modified:December 20, 2005 - 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:iF926C4E00C5145D5
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC74985.1
AP009048 Genomic DNA Translation: BAA15738.1

Protein sequence database of the Protein Information Resource

More...PIRi		C64955

NCBI Reference Sequences

More...RefSeqi		NP_416428.1, NC_000913.3
WP_001158220.1, NZ_STEB01000026.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC74985; AAC74985; b1918
BAA15738; BAA15738; BAA15738

Database of genes from NCBI RefSeq genomes

More...GeneIDi		66674192
949105

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW1903
eco:b1918

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.331

<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
U00096 Genomic DNA Translation: AAC74985.1
AP009048 Genomic DNA Translation: BAA15738.1
PIRiC64955
RefSeqiNP_416428.1, NC_000913.3
WP_001158220.1, NZ_STEB01000026.1

3D structure databases

SMRiP0AFT2
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi4261651, 23 interactors
ComplexPortaliCPX-4406, L-cystine ABC transporter complex
IntActiP0AFT2, 1 interactor
STRINGi511145.b1918

Protein family/group databases

TCDBi3.A.1.3.10, the atp-binding cassette (abc) superfamily

Proteomic databases

jPOSTiP0AFT2
PaxDbiP0AFT2
PRIDEiP0AFT2

Genome annotation databases

EnsemblBacteriaiAAC74985; AAC74985; b1918
BAA15738; BAA15738; BAA15738
GeneIDi66674192
949105
KEGGiecj:JW1903
eco:b1918
PATRICifig|1411691.4.peg.331

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB3791

Phylogenomic databases

eggNOGiCOG0765, Bacteria
HOGENOMiCLU_019602_1_4_6
InParanoidiP0AFT2
PhylomeDBiP0AFT2

Enzyme and pathway databases

BioCyciEcoCyc:G7037-MONOMER

Miscellaneous databases

Protein Ontology

More...PROi		PR:P0AFT2

Family and domain databases

CDDicd06261, TM_PBP2, 1 hit
Gene3Di1.10.3720.10, 1 hit
InterProiView protein in InterPro
IPR010065, AA_ABC_transptr_permease_3TM
IPR043429, ArtM/GltK/GlnP/TcyL/YhdX-like
IPR000515, MetI-like
IPR035906, MetI-like_sf
PANTHERiPTHR30614, PTHR30614, 1 hit
PfamiView protein in Pfam
PF00528, BPD_transp_1, 1 hit
SUPFAMiSSF161098, SSF161098, 1 hit
TIGRFAMsiTIGR01726, HEQRo_perm_3TM, 1 hit
PROSITEiView protein in PROSITE
PS50928, ABC_TM1, 1 hit

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 nameiTCYL_ECOLI
<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: P0AFT2
Secondary accession number(s): O07985, P76315
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: December 20, 2005
Last modified: February 23, 2022
This is version 110 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

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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