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KCNQ1
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  • KCNQ1
PROTEIN STRUCTURE
ANTIBODIES
AND
VALIDATION
Protein structures
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

KCNQ1
Synonyms JLNS1, KCNA8, KCNA9, Kv7.1, KVLQT1, LQT, LQT1
Gene descriptioni

Full gene name according to HGNC.

Potassium voltage-gated channel subfamily Q member 1
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Read more
Disease related genes
FDA approved drug targets
Human disease related genes
Plasma proteins
Transporters
Voltage-gated ion channels
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Read more
Intracellular,Membrane
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 11
Cytoband
Chromosome location (bp) 2444684 - 2849105
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

6
Ensembl ENSG00000053918 (version 103.38)
Entrez gene 3784
HGNC HGNC:6294
UniProt P51787 (UniProt - Evidence at protein level)
neXtProt NX_P51787
Antibodypedia KCNQ1 antibodies


PROTEIN STRUCTUREi

The Structure section provides predicted structures from the Alphafold protein structure database and available experimental structures from Protein Data Bank (PDB).

In the Structure drop-down menu all experimental structures from PDB are available for selection and display. The structures are displayed using the NGL Viewer and can be zoomed-in and rotated either manually or by checking the Autorotate box. The Color scheme can be selected to show the residue index, chain name or confidence score (as B-factors and pLDDT score for experimental and predicted structures, respectively). The positions for available antigen sequences in the structure are shown if Antigens is turned to ON, and the Variants slider can be used to show the positions of clinical and population variants.https://github.com/nglviewer/ngl

Read more

Predicted


Description: Structure prediction from Alphafold project. Structure version 2

# Chains: 1      # Clinical variants: 168      # Population variants: 439

Antigens:

Off
On

Variants:

Off
Clinical
Population

Color scheme:

Confidence
Residue index
Chain name

Autorotate:

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On



PROTEIN BROWSERi

The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.

At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.

Below the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50). The region with the lowest possible identity is always selected for antigen design, with a maximum identity of 60% allowed for designing a single-target antigen (read more).

The curve in blue displays the predicted antigenicity i.e. the tendency for different regions of the protein to generate an immune response, with peak regions being predicted to be more antigenic.The curve shows average values based on a sliding window approach using an in-house propensity scale. (read more).

If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.

Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
KCNQ1-201
KCNQ1-202
KCNQ1-204
KCNQ1-205
KCNQ1-206
KCNQ1-207


PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant UniProt Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
KCNQ1-201
ENSP00000155840
ENST00000155840
P51787 [Direct mapping]
Potassium voltage-gated channel subfamily KQT member 1
Show all
Transporters
   Transporter channels and pores
Voltage-gated ion channels
   Voltage-Gated Potassium Channels
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   6TM proteins predicted by MDM
Plasma proteins
Disease related genes
FDA approved drug targets
   Small molecule drugs
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005216 [ion channel activity]
GO:0005244 [voltage-gated ion channel activity]
GO:0005249 [voltage-gated potassium channel activity]
GO:0005251 [delayed rectifier potassium channel activity]
GO:0005267 [potassium channel activity]
GO:0005515 [protein binding]
GO:0005516 [calmodulin binding]
GO:0005546 [phosphatidylinositol-4,5-bisphosphate binding]
GO:0005737 [cytoplasm]
GO:0005764 [lysosome]
GO:0005768 [endosome]
GO:0005769 [early endosome]
GO:0005770 [late endosome]
GO:0005783 [endoplasmic reticulum]
GO:0005886 [plasma membrane]
GO:0006349 [regulation of gene expression by genetic imprinting]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0007605 [sensory perception of sound]
GO:0008016 [regulation of heart contraction]
GO:0008076 [voltage-gated potassium channel complex]
GO:0008157 [protein phosphatase 1 binding]
GO:0010460 [positive regulation of heart rate]
GO:0015271 [outward rectifier potassium channel activity]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016323 [basolateral plasma membrane]
GO:0016458 [gene silencing]
GO:0030659 [cytoplasmic vesicle membrane]
GO:0031410 [cytoplasmic vesicle]
GO:0034236 [protein kinase A catalytic subunit binding]
GO:0034237 [protein kinase A regulatory subunit binding]
GO:0034702 [ion channel complex]
GO:0034765 [regulation of ion transmembrane transport]
GO:0035690 [cellular response to drug]
GO:0044325 [ion channel binding]
GO:0045121 [membrane raft]
GO:0048839 [inner ear development]
GO:0050892 [intestinal absorption]
GO:0055085 [transmembrane transport]
GO:0060048 [cardiac muscle contraction]
GO:0060306 [regulation of membrane repolarization]
GO:0060307 [regulation of ventricular cardiac muscle cell membrane repolarization]
GO:0060372 [regulation of atrial cardiac muscle cell membrane repolarization]
GO:0060452 [positive regulation of cardiac muscle contraction]
GO:0060453 [regulation of gastric acid secretion]
GO:0061337 [cardiac conduction]
GO:0070293 [renal absorption]
GO:0071320 [cellular response to cAMP]
GO:0071805 [potassium ion transmembrane transport]
GO:0071872 [cellular response to epinephrine stimulus]
GO:0072359 [circulatory system development]
GO:0086005 [ventricular cardiac muscle cell action potential]
GO:0086008 [voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization]
GO:0086009 [membrane repolarization]
GO:0086011 [membrane repolarization during action potential]
GO:0086013 [membrane repolarization during cardiac muscle cell action potential]
GO:0086014 [atrial cardiac muscle cell action potential]
GO:0086089 [voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization]
GO:0086091 [regulation of heart rate by cardiac conduction]
GO:0097110 [scaffold protein binding]
GO:0097623 [potassium ion export across plasma membrane]
GO:0098914 [membrane repolarization during atrial cardiac muscle cell action potential]
GO:0098915 [membrane repolarization during ventricular cardiac muscle cell action potential]
GO:1901381 [positive regulation of potassium ion transmembrane transport]
GO:1902282 [voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization]
Show all
676 aa
74.7 kDa
No 6
KCNQ1-202
ENSP00000334497
ENST00000335475
P51787 [Direct mapping]
Potassium voltage-gated channel subfamily KQT member 1
Show all
Transporters
   Transporter channels and pores
Voltage-gated ion channels
   Voltage-Gated Potassium Channels
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   5TM proteins predicted by MDM
Plasma proteins
Disease related genes
FDA approved drug targets
   Small molecule drugs
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005216 [ion channel activity]
GO:0005244 [voltage-gated ion channel activity]
GO:0005249 [voltage-gated potassium channel activity]
GO:0005251 [delayed rectifier potassium channel activity]
GO:0005267 [potassium channel activity]
GO:0005515 [protein binding]
GO:0005516 [calmodulin binding]
GO:0005546 [phosphatidylinositol-4,5-bisphosphate binding]
GO:0005737 [cytoplasm]
GO:0005764 [lysosome]
GO:0005768 [endosome]
GO:0005769 [early endosome]
GO:0005770 [late endosome]
GO:0005783 [endoplasmic reticulum]
GO:0005886 [plasma membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0007605 [sensory perception of sound]
GO:0008016 [regulation of heart contraction]
GO:0008076 [voltage-gated potassium channel complex]
GO:0008157 [protein phosphatase 1 binding]
GO:0010460 [positive regulation of heart rate]
GO:0015271 [outward rectifier potassium channel activity]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016323 [basolateral plasma membrane]
GO:0030659 [cytoplasmic vesicle membrane]
GO:0031410 [cytoplasmic vesicle]
GO:0034236 [protein kinase A catalytic subunit binding]
GO:0034237 [protein kinase A regulatory subunit binding]
GO:0034702 [ion channel complex]
GO:0034765 [regulation of ion transmembrane transport]
GO:0035690 [cellular response to drug]
GO:0044325 [ion channel binding]
GO:0045121 [membrane raft]
GO:0048839 [inner ear development]
GO:0050892 [intestinal absorption]
GO:0055085 [transmembrane transport]
GO:0060048 [cardiac muscle contraction]
GO:0060306 [regulation of membrane repolarization]
GO:0060307 [regulation of ventricular cardiac muscle cell membrane repolarization]
GO:0060372 [regulation of atrial cardiac muscle cell membrane repolarization]
GO:0060452 [positive regulation of cardiac muscle contraction]
GO:0060453 [regulation of gastric acid secretion]
GO:0061337 [cardiac conduction]
GO:0070293 [renal absorption]
GO:0071320 [cellular response to cAMP]
GO:0071805 [potassium ion transmembrane transport]
GO:0071872 [cellular response to epinephrine stimulus]
GO:0086005 [ventricular cardiac muscle cell action potential]
GO:0086008 [voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization]
GO:0086011 [membrane repolarization during action potential]
GO:0086013 [membrane repolarization during cardiac muscle cell action potential]
GO:0086014 [atrial cardiac muscle cell action potential]
GO:0086089 [voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization]
GO:0086091 [regulation of heart rate by cardiac conduction]
GO:0097110 [scaffold protein binding]
GO:0097623 [potassium ion export across plasma membrane]
GO:0098914 [membrane repolarization during atrial cardiac muscle cell action potential]
GO:0098915 [membrane repolarization during ventricular cardiac muscle cell action potential]
GO:1901381 [positive regulation of potassium ion transmembrane transport]
GO:1902260 [negative regulation of delayed rectifier potassium channel activity]
GO:1902282 [voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization]
GO:1903817 [negative regulation of voltage-gated potassium channel activity]
Show all
549 aa
61.5 kDa
Yes 5
KCNQ1-204
ENSP00000370153
ENST00000380776
F8W824 [Direct mapping]
Potassium voltage-gated channel subfamily KQT member 1
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
74 aa
7.9 kDa
No 1
KCNQ1-205
ENSP00000434560
ENST00000496887
E9PPZ0 [Direct mapping]
IKs producing slow voltage-gated potassium channel subunit alpha KvLQT1
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005216 [ion channel activity]
GO:0005244 [voltage-gated ion channel activity]
GO:0005249 [voltage-gated potassium channel activity]
GO:0005267 [potassium channel activity]
GO:0005783 [endoplasmic reticulum]
GO:0005886 [plasma membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0008076 [voltage-gated potassium channel complex]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016323 [basolateral plasma membrane]
GO:0016328 [lateral plasma membrane]
GO:0030659 [cytoplasmic vesicle membrane]
GO:0031410 [cytoplasmic vesicle]
GO:0034765 [regulation of ion transmembrane transport]
GO:0055085 [transmembrane transport]
GO:0071805 [potassium ion transmembrane transport]
Show all
193 aa
21.9 kDa
No 4
KCNQ1-206
ENSP00000494939
ENST00000526095
A0A2R8YDV1 [Direct mapping]
Potassium voltage-gated channel subfamily KQT member 1
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005249 [voltage-gated potassium channel activity]
GO:0006813 [potassium ion transport]
GO:0008076 [voltage-gated potassium channel complex]
GO:0071805 [potassium ion transmembrane transport]
Show all
144 aa
15.7 kDa
No 0
KCNQ1-207
ENSP00000495806
ENST00000646564
A0A2R8YEQ9 [Direct mapping]
Potassium voltage-gated channel subfamily KQT member 1
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Human disease related genes
   Cardiovascular diseases
   Cardiac diseases
   Congenital malformations
   Other congenital malformations
   Endocrine and metabolic diseases
   Diabetes
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005244 [voltage-gated ion channel activity]
GO:0005249 [voltage-gated potassium channel activity]
GO:0005267 [potassium channel activity]
GO:0005886 [plasma membrane]
GO:0006811 [ion transport]
GO:0006813 [potassium ion transport]
GO:0008076 [voltage-gated potassium channel complex]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0034765 [regulation of ion transmembrane transport]
GO:0071805 [potassium ion transmembrane transport]
Show all
310 aa
35.3 kDa
No 1

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The Human Protein Atlas

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The Human Protein Atlas project is funded
by the Knut & Alice Wallenberg Foundation.