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Entry version 123 (02 Dec 2020)
Sequence version 1 (01 Nov 1997)
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Protein

Potassium channel protein 1

Gene

MJ0138.1

Organism
Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii)
Status
Reviewed-Annotation score:

Annotation score:3 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>
-Protein predictedi <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

Potassium channel protein. Seems to conduct potassium at low membrane potentials.

1 Publication

Miscellaneous

Inhibited by barium and cesium.

<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

<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

Molecular functionIon channel, Potassium channel
Biological processIon transport, Potassium transport, Transport
LigandPotassium

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
MJAN243232:G1GKE-147-MONOMER

Protein family/group databases

Transport Classification Database

More...
TCDBi
1.A.1.13.8, the voltage-gated ion channel (vic) 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:
Potassium channel protein 1
Alternative name(s):
MjK1
<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
Ordered Locus Names:MJ0138.1
<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>OrganismiMethanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) (Methanococcus jannaschii)
<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 identifieri243232 [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 lineageiArchaeaEuryarchaeotaMethanomada groupMethanococciMethanococcalesMethanocaldococcaceaeMethanocaldococcus
<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
  • UP000000805 <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

<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 – 6CytoplasmicSequence analysis6
<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>Transmembranei7 – 27HelicalSequence analysisAdd BLAST21
Topological domaini28 – 60ExtracellularSequence analysisAdd BLAST33
Transmembranei61 – 81HelicalSequence analysisAdd BLAST21
Topological domaini82 – 333CytoplasmicSequence analysisAdd BLAST252

Keywords - Cellular componenti

Cell membrane, Membrane

<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_00000540991 – 333Potassium channel protein 1Add BLAST333

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q57604

<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

Homotetramer.

Curated

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
243232.MJ_0138.1

<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
Q57604

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>Domaini109 – 233RCK N-terminalPROSITE-ProRule annotationAdd BLAST125
Domaini246 – 331RCK C-terminalPROSITE-ProRule annotationAdd BLAST86

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi46 – 51Selectivity filterBy similarity6

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
arCOG01958, Archaea

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_050982_0_1_2

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q57604

Identification of Orthologs from Complete Genome Data

More...
OMAi
VFEGIWW

Database of Orthologous Groups

More...
OrthoDBi
80000at2157

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q57604

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.70.1450, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003280, 2pore_dom_K_chnl
IPR013099, K_chnl_dom
IPR036291, NAD(P)-bd_dom_sf
IPR006037, RCK_C
IPR036721, RCK_C_sf
IPR003148, RCK_N

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07885, Ion_trans_2, 1 hit
PF02080, TrkA_C, 1 hit
PF02254, TrkA_N, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01333, 2POREKCHANEL

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF116726, SSF116726, 1 hit
SSF51735, SSF51735, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51202, RCK_C, 1 hit
PS51201, RCK_N, 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.

Q57604-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
METYEKIELG IIVIILLILI ESVILMTVEG WDFFTAFYTA VVTISTVGYG
60 70 80 90 100
DYTPQTFLGK LSVIIYIFAG VGAVAYTMGN IASFFIEGHF RKYFRLRKMM
110 120 130 140 150
DRIKKLNNHY IICGYGRLGK VIAEEFKKCN IPFVIIDSDE KLLEEALEKD
160 170 180 190 200
PNLICIVGDA TSDDILKKAK IEKAKGLISV VSSDAENVFI TLSAKKLNPN
210 220 230 240 250
IYIVAKAEKP STLDKLIKAG ADRAVCPYIV GGMEIARIAI NPDIVEFIHS
260 270 280 290 300
LVATEEDMEV RRYIVKNKEL DNKLLKDSGI REKTGATILA VKKGDKTITS
310 320 330
PPPDTVINIG DIIYAFGTKE QLEKLKRYVE GVE
Length:333
Mass (Da):37,150
Last modified:November 1, 1997 - 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:i7CC082675F96B06A
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
L77117 Genomic DNA Translation: AAB98130.1

Protein sequence database of the Protein Information Resource

More...
PIRi
D64317

NCBI Reference Sequences

More...
RefSeqi
WP_010869633.1, NC_000909.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAB98130; AAB98130; MJ_0138.1

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
1450981

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mja:MJ_0138.1

<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
L77117 Genomic DNA Translation: AAB98130.1
PIRiD64317
RefSeqiWP_010869633.1, NC_000909.1

3D structure databases

SMRiQ57604
ModBaseiSearch...

Protein-protein interaction databases

STRINGi243232.MJ_0138.1

Protein family/group databases

TCDBi1.A.1.13.8, the voltage-gated ion channel (vic) superfamily

Proteomic databases

PRIDEiQ57604

Genome annotation databases

EnsemblBacteriaiAAB98130; AAB98130; MJ_0138.1
GeneIDi1450981
KEGGimja:MJ_0138.1

Phylogenomic databases

eggNOGiarCOG01958, Archaea
HOGENOMiCLU_050982_0_1_2
InParanoidiQ57604
OMAiVFEGIWW
OrthoDBi80000at2157
PhylomeDBiQ57604

Enzyme and pathway databases

BioCyciMJAN243232:G1GKE-147-MONOMER

Family and domain databases

Gene3Di3.30.70.1450, 1 hit
InterProiView protein in InterPro
IPR003280, 2pore_dom_K_chnl
IPR013099, K_chnl_dom
IPR036291, NAD(P)-bd_dom_sf
IPR006037, RCK_C
IPR036721, RCK_C_sf
IPR003148, RCK_N
PfamiView protein in Pfam
PF07885, Ion_trans_2, 1 hit
PF02080, TrkA_C, 1 hit
PF02254, TrkA_N, 1 hit
PRINTSiPR01333, 2POREKCHANEL
SUPFAMiSSF116726, SSF116726, 1 hit
SSF51735, SSF51735, 1 hit
PROSITEiView protein in PROSITE
PS51202, RCK_C, 1 hit
PS51201, RCK_N, 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 nameiMJK1_METJA
<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: Q57604
<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: November 1, 1997
Last sequence update: November 1, 1997
Last modified: December 2, 2020
This is version 123 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
UniProt is an ELIXIR core data resource
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