PTK6 protein expression summary - The Human Protein Atlas

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PTK6

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HUMAN PROTEIN ATLAS SUMMARYⁱ 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.
Proteinⁱ Full gene name according to HGNC.	Protein tyrosine kinase 6
Gene nameⁱ Official gene symbol, which is typically a short form of the gene name, according to HGNC.	PTK6 (BRK)
Tissue specificityⁱ ??The RNA specificity category is based on mRNA expression levels in the consensus dataset which is calculated from the RNA expression levels in samples from HPA and GTEX. The categories include: tissue enriched, group enriched, tissue enhanced, low tissue specificity and not detected. Read more	Tissue enhanced (esophagus, skin, vagina)
Tissue expression clusterⁱ The RNA data was used to cluster genes according to their expression across tissues. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Esophagus - Epithelial junctions (mainly)
Single cell type specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed cell types based on scRNA-seq data from normal tissues. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected. Read more	Cell type enhanced (Distal enterocytes, Paneth cells, Proximal enterocytes, Gastric mucus-secreting cells, Squamous epithelial cells, Intestinal goblet cells)
Single cell type expression clusterⁱ The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Intestinal epithelial cells - Unknown function (mainly)
Immune cell specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed blood cell samples based on data from HPA. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected. Read more	Low immune cell specificity
Brain specificityⁱ The regional specificity category is based on mRNA expression levels in the analysed brain samples, grouped into 13 main brain regions and calculated for the three different species. All brain expression profiles are based on data from HPA. The specificity categories include: regionally enriched, group enriched, regionally enhanced, low regional specificity and not detected. The classification rules are the same used for the tissue specificity category Read more	Low human brain regional specificity
Cancer prognostic summary	Prognostic marker in renal cancer (unfavorable) and pancreatic cancer (unfavorable)
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
Subcellular summaryⁱ Describes the main and potential additional location(s) of the encoded protein according to ICC-IF resukt in the Cell Atlas, as well as potential data regarding cell cycle depency (CCD) for the RNA and/or protein expression.	Located in Nucleoplasm, Nuclear bodies, Plasma membrane, Cytosol (Single cell variability)
Protein function (UniProt)ⁱ Useful information about the protein provided by UniProt.	Non-receptor tyrosine-protein kinase implicated in the regulation of a variety of signaling pathways that control the differentiation and maintenance of normal epithelia, as well as tumor growth. Function seems to be context dependent and differ depending on cell type, as well as its intracellular localization. A number of potential nuclear and cytoplasmic substrates have been identified. These include the RNA-binding proteins: KHDRBS1/SAM68, KHDRBS2/SLM1, KHDRBS3/SLM2 and SFPQ/PSF; transcription factors: STAT3 and STAT5A/B and a variety of signaling molecules: ARHGAP35/p190RhoGAP, PXN/paxillin, BTK/ATK, STAP2/BKS. Associates also with a variety of proteins that are likely upstream of PTK6 in various signaling pathways, or for which PTK6 may play an adapter-like role. These proteins include ADAM15, EGFR, ERBB2, ERBB3 and IRS4. In normal or non-tumorigenic tissues, PTK6 promotes cellular differentiation and apoptosis. In tumors PTK6 contributes to cancer progression by sensitizing cells to mitogenic signals and enhancing proliferation, anchorage-independent survival and migration/invasion. Association with EGFR, ERBB2, ERBB3 may contribute to mammary tumor development and growth through enhancement of EGF-induced signaling via BTK/AKT and PI3 kinase. Contributes to migration and proliferation by contributing to EGF-mediated phosphorylation of ARHGAP35/p190RhoGAP, which promotes association with RASA1/p120RasGAP, inactivating RhoA while activating RAS. EGF stimulation resulted in phosphorylation of PNX/Paxillin by PTK6 and activation of RAC1 via CRK/CrKII, thereby promoting migration and invasion. PTK6 activates STAT3 and STAT5B to promote proliferation. Nuclear PTK6 may be important for regulating growth in normal epithelia, while cytoplasmic PTK6 might activate oncogenic signaling pathways.... show less
Molecular function (UniProt)ⁱ Keywords assigned by UniProt to proteins due to their particular molecular function.	Kinase, Transferase, Tyrosine-protein kinase
Disease involvementⁱ Disease related keywords assigned by UniProt combined with Cancer-related genes and FDA approved drug targets Read more	Cancer-related genes
Ligand (UniProt)ⁱ Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.	ATP-binding, Nucleotide-binding
Gene summary (Entrez)ⁱ Useful information about the gene from Entrez	The protein encoded by this gene is a cytoplasmic nonreceptor protein kinase which may function as an intracellular signal transducer in epithelial tissues. Overexpression of this gene in mammary epithelial cells leads to sensitization of the cells to epidermal growth factor and results in a partially transformed phenotype. Expression of this gene has been detected at low levels in some breast tumors but not in normal breast tissue. The encoded protein has been shown to undergo autophosphorylation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2012]... show less

TISSUEⁱ Summary of data presented in the Tissue section, with a representative image of protein expression (left) and an interactive chart showing the tissue-specific mRNA expression (right). The image and the chart are clickable and will redirect to more Tissue data. This section contains information regarding the expression profiles of protein-coding genes in normal human tissue, both on the mRNA and protein level. The protein expression data is derived from antibody-based protein profiling using immunohistochemistry. Read more

Tissue expression clusterⁱ The RNA data was used to cluster genes according to their expression across tissues. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Esophagus - Epithelial junctions (mainly)
Tissue specificityⁱ The RNA specificity category is based on mRNA expression levels in the consensus dataset which is calculated from the RNA expression levels in samples from HPA and GTEX. The categories include: tissue enriched, group enriched, tissue enhanced, low tissue specificity and not detected. Read more	Tissue enhanced (esophagus, skin, vagina)
Tissue distributionⁱ The RNA distribution category is based on mRNA expression levels in the analyzed samples based on a combination of data from HPA and GTEX. The categories include: detected in all, detected in many, detected in some, detected in single and not detected. Read more	Detected in many
Protein expressionⁱ A summary of the overall protein expression pattern across the analyzed normal tissues. The summary is based on knowledge-based annotation. "Estimation of protein expression could not be performed. View primary data." is shown for genes analyzed with a knowledge-based approach where available RNA-seq and gene/protein characterization data has been evaluated as not sufficient in combination with immunohistochemistry data to yield a reliable estimation of the protein expression profile. Read more	Cytoplasmic and nuclear expression in several different tissue types.

BRAINⁱ Summary of data presented in the Brain Atlas and a representative image of mRNA expression in the human brain. The image is clickable and will redirect to more Brain Atlas data. The Brain Atlas explores the protein expression in the mammalian brain by visualization and integration of data from three mammalian species (human, pig and mouse). Transcriptomics data combined with affinity-based protein in situ localization down to single cell level is available in a brain-centric sub atlas of the Human Protein Atlas. Read more

Human regional specificityⁱ The regional specificity category is based on mRNA expression levels in the analysed brain samples, grouped into 13 main brain regions and calculated for the three different species. All brain expression profiles are based on data from HPA. The specificity categories include: regionally enriched, group enriched, regionally enhanced, low regional specificity and not detected. The classification rules are the same used for the tissue specificity category. Read more	Low region specificity
Pig regional specificityⁱ The regional specificity category is based on mRNA expression levels in the analysed brain samples, grouped into 13 main brain regions and calculated for the three different species. All brain expression profiles are based on data from HPA. The specificity categories include: regionally enriched, group enriched, regionally enhanced, low regional specificity and not detected. The classification rules are the same used for the tissue specificity category. Read more	Low region specificity
Mouse regional specificityⁱ The regional specificity category is based on mRNA expression levels in the analysed brain samples, grouped into 13 main brain regions and calculated for the three different species. All brain expression profiles are based on data from HPA. The specificity categories include: regionally enriched, group enriched, regionally enhanced, low regional specificity and not detected. The classification rules are the same used for the tissue specificity category. Read more	Not detected

SINGLE CELL TYPEⁱ Summary of data presented in the Single cell Type section, with an interactive chart showing the cell type-specific mRNA expression. The chart is clickable and will redirect to more Cell Type data. This section contains information about single cell type RNA expression based on scRNAseq of human tissues. The data also covers transcriptomics analysis of human blood and cultured cell lines. Read more

Single cell type expression clusterⁱ The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Intestinal epithelial cells - Unknown function (mainly)
Cell type specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed cell types based on scRNA-seq data from normal tissues. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected. Read more	Cell type enhanced (Distal enterocytes, Paneth cells, Proximal enterocytes, Gastric mucus-secreting cells, Squamous epithelial cells, Intestinal goblet cells)

TISSUE CELL TYPEⁱ

Colon enterocytes

Gastric mucous cells

Keratinocyte (other)

Urothelial cells

Classificationⁱ

Cell type enriched in 4 tissues

PATHOLOGYⁱ Summary of data presented in the Pathology section, with representative images of protein expression in cancer (left) and correlation between mRNA expression and patient survival (right). Images are clickable and redirect to pages with more Pathology data. This section contains mRNA and protein expression data from 17 different forms of human cancer, as well as correlation analysis of mRNA expression and patient survival. The protein expression data is derived from antibody-based protein profiling using immunohistochemistry. Read more
	Renal cancer p<0.001
Prognostic summary	Prognostic marker in renal cancer (unfavorable) and pancreatic cancer (unfavorable)
Cancer specificityⁱ Specificity of RNA expression in 17 cancer types is categorized as either cancer enriched, group enriched, cancer enhanced, low cancer specificity and not detected. Read more	Low cancer specificity
Cancer distributionⁱ Distribution of RNA expression in 17 cancer types is categorized as either detected in single, detected in some, detected in many, detected in all, or not detected. Read more	Detected in many

IMMUNE CELLⁱ Summary of data presented in the Immune Cell section and a representative image of mRNA expression in immune cells in the blood. The image is clickable and will redirect to more immune cell related data. The Immune Cell section contains information regarding single cell type mRNA expression profiles of protein-coding genes in various immune cells in the blood, e.g. B-cells and granulocytes. Read more

Immune cell expression clusterⁱ The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Myeloid DCs - Unknown function (mainly)
Immune cell specificityⁱ The RNA specificity category is based on mRNA expression levels in the analyzed samples based on data from HPA. The categories include: cell type enriched, group enriched, cell type enhanced, low cell type specificity and not detected. Read more	Low immune cell specificity

BLOOD PROTEINⁱ Summary of data presented in the Blood proteins section and a representative image of the concentration in plasma and related function for the protein in plasma. The image is clickable and will redirect to more data. The Blood proteins section contains plasma levels of proteins detected in human blood and an analysis of the human secretome (including annotation of the genes predicted to be actively secreted to human blood) is also presented. Read more
Detected in blood by immunoassayⁱ The blood-based immunoassay category applies to actively secreted proteins and is based on plasma or serum protein concentrations established with enzyme-linked immunosorbent assays, compiled from a literature search. The categories include: detected and not detected, where detection refers to a concentration found in the literature search. Read more	No (not applicable)
Detected in blood by mass spectrometryⁱ Detection or not of the gene in blood, based on spectral count estimations from a publicly available mass spectrometry-based plasma proteomics data set obtained from the PeptideAtlas.	No
Detected in blood by proximity extension assayⁱ Detection or not of the gene in blood, based on proximity extension assays (Olink) for a longitudinal wellness study covering 76 individuals with three visits during two years. Read more	No

SUBCELLULARⁱ Summary of data presented in the Cell Atlas and a representative image of subcellular localization. The Cell Atlas provides RNA expression data derived from RNA sequencing of a large panel of cell lines and protein localization data derived from antibody-based profiling by immunofluorescence confocal microscopy, using a subset of cell lines selected based on RNA expression. Read more

Main locationⁱ Main subcellular location(s) and reliability score(s) for the encoded protein(s) in human cells. The main location(s) may be characterized by presence in all tested cell lines and/or ihigher staining intensity compared to the potential additional location(s). If available, links to overrepresentation analyses in Reactome, a free, open-source, curated and peer reviewed biological pathway database, are provided. An analysis is done for the corresponding gene set of the proteome localizing to the main and additional locations of the protein on this page, respectively. Read more	Localized to the Nucleoplasm
Additional locationⁱ Additonal subcellular location(s) for the encoded protein(s) in human cells. The additional location(s) may not be present i all cell lines and may have lower staining intensity compared to the main location(s). If available, links to overrepresentation analyses in Reactome, a free, open-source, curated and peer reviewed biological pathway database, are provided. An analysis is done for the corresponding gene set of the proteome localizing to the main and additional locations of the protein on this page, respectively. Read more	In addition localized to the Nuclear bodies, Plasma membrane, Cytosol

CELL LINEⁱ Summary of data presented in the Cell Line section and a representative image of mRNA expression across different human cell lines. The image is clickable and will redirect to more cell line data. This section contains information regarding mRNA expression profiles of human protein-coding genes for a large variety of cell lines. Read more

Cell line expression clusterⁱ The RNA data was used to cluster genes according to their expression across single cell types. Clusters contain genes that have similar expression patterns, and each cluster has been manually annotated to describe common features in terms of function and specificity. Read more	Epithelial cell lines - Epithelial cell function (mainly)
Cell line specificityⁱ RNA specificity category based on RNA sequencing data from all cell lines in the Human Protein Atlas. Genes are classified into six different categories (enriched, group enriched, enhanced, low specificity and not detected) according to their RNA expression levels across the panel of cell lines. Read more	Cell line enhanced (A-431, CAPAN-2, HaCaT, hTCEpi, OE19, RT4, T-47d)
Cell type distributionⁱ The RNA distribution category is based on mRNA expression levels in the analyzed cell types based on scRNA-seq data from normal tissues. The categories include: detected in all, detected in many, detected in some, detected in single and not detected. Read more	Detected in many

METABOLIC

Metabolic info	Present in 1 pathway

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.
Gene name	PTK6 (HGNC Symbol)
Synonyms	BRK
Description	Protein tyrosine kinase 6 (HGNC Symbol)
Chromosome	20
Cytoband	q13.33
Chromosome location (bp)	63528001 - 63537376
Number of transcriptsⁱ Number of protein-coding transcripts from the gene as defined by Ensembl.	2
Protein evidence	Evidence at protein level (all genes)
Protein classⁱ Assigned HPA protein class(es) for the encoded protein(s). Read more	Cancer-related genes Enzymes Metabolic proteins
Ensembl	ENSG00000101213 (version 103.38)
Entrez gene	5753
UniProt	Q13882 (UniProt - Evidence at protein level)
neXtProt	NX_Q13882
Antibodypedia	PTK6 antibodies

PROTEIN BROWSERⁱ

PTK6-201

PTK6-202

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)
PTK6-201 ENSP00000217185 ENST00000217185	Q13882 [Direct mapping] Protein-tyrosine kinase 6 Show all	Enzymes ENZYME proteins Transferases Kinases Tyr protein kinases Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Cancer-related genes COSMIC somatic mutations in cancer genes COSMIC Somatic Mutations COSMIC Nonsense Mutations COSMIC Missense Mutations Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Ezkurdia et al 2014) Show all	GO:0000166 [nucleotide binding] GO:0001726 [ruffle] GO:0004672 [protein kinase activity] GO:0004713 [protein tyrosine kinase activity] GO:0004715 [non-membrane spanning protein tyrosine kinase activity] GO:0005102 [signaling receptor binding] GO:0005515 [protein binding] GO:0005524 [ATP binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005737 [cytoplasm] GO:0005829 [cytosol] GO:0005886 [plasma membrane] GO:0006468 [protein phosphorylation] GO:0007169 [transmembrane receptor protein tyrosine kinase signaling pathway] GO:0007260 [tyrosine phosphorylation of STAT protein] GO:0009968 [negative regulation of signal transduction] GO:0010976 [positive regulation of neuron projection development] GO:0016020 [membrane] GO:0016301 [kinase activity] GO:0016310 [phosphorylation] GO:0016477 [cell migration] GO:0016604 [nuclear body] GO:0016740 [transferase activity] GO:0030154 [cell differentiation] GO:0031234 [extrinsic component of cytoplasmic side of plasma membrane] GO:0038083 [peptidyl-tyrosine autophosphorylation] GO:0038128 [ERBB2 signaling pathway] GO:0042127 [regulation of cell population proliferation] GO:0042531 [positive regulation of tyrosine phosphorylation of STAT protein] GO:0042802 [identical protein binding] GO:0042995 [cell projection] GO:0045087 [innate immune response] GO:0045742 [positive regulation of epidermal growth factor receptor signaling pathway] GO:0045787 [positive regulation of cell cycle] GO:0046777 [protein autophosphorylation] GO:0061099 [negative regulation of protein tyrosine kinase activity] GO:0071300 [cellular response to retinoic acid] Show all	134 aa 14.5 kDa	No	0
PTK6-202 ENSP00000442460 ENST00000542869	Q13882 [Direct mapping] Protein-tyrosine kinase 6 Show all	Enzymes ENZYME proteins Transferases Kinases Tyr protein kinases Metabolic proteins SPOCTOPUS predicted membrane proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Cancer-related genes COSMIC somatic mutations in cancer genes COSMIC Somatic Mutations COSMIC Nonsense Mutations COSMIC Missense Mutations Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Ezkurdia et al 2014) Show all	GO:0000166 [nucleotide binding] GO:0001726 [ruffle] GO:0004672 [protein kinase activity] GO:0004713 [protein tyrosine kinase activity] GO:0004715 [non-membrane spanning protein tyrosine kinase activity] GO:0005102 [signaling receptor binding] GO:0005515 [protein binding] GO:0005524 [ATP binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005737 [cytoplasm] GO:0005829 [cytosol] GO:0005886 [plasma membrane] GO:0006468 [protein phosphorylation] GO:0007169 [transmembrane receptor protein tyrosine kinase signaling pathway] GO:0007260 [tyrosine phosphorylation of STAT protein] GO:0009968 [negative regulation of signal transduction] GO:0010976 [positive regulation of neuron projection development] GO:0016020 [membrane] GO:0016301 [kinase activity] GO:0016310 [phosphorylation] GO:0016477 [cell migration] GO:0016604 [nuclear body] GO:0016740 [transferase activity] GO:0030154 [cell differentiation] GO:0031234 [extrinsic component of cytoplasmic side of plasma membrane] GO:0038083 [peptidyl-tyrosine autophosphorylation] GO:0038128 [ERBB2 signaling pathway] GO:0042127 [regulation of cell population proliferation] GO:0042531 [positive regulation of tyrosine phosphorylation of STAT protein] GO:0042802 [identical protein binding] GO:0042995 [cell projection] GO:0045087 [innate immune response] GO:0045742 [positive regulation of epidermal growth factor receptor signaling pathway] GO:0045787 [positive regulation of cell cycle] GO:0045926 [negative regulation of growth] GO:0046777 [protein autophosphorylation] GO:0060575 [intestinal epithelial cell differentiation] GO:0061099 [negative regulation of protein tyrosine kinase activity] GO:0071300 [cellular response to retinoic acid] Show all	451 aa 51.8 kDa	No	0

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