Tchem EPHB3 Ephrin type-B receptor 3

Protein Summary

Description

Receptor tyrosine kinase which binds promiscuously transmembrane ephrin-B family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Generally has an overlapping and redundant function with EPHB2. Like EPHB2, functions in axon guidance during development regulating for instance the neurons forming the corpus callosum and the anterior commissure, 2 major interhemispheric connections between the temporal lobes of the cerebral cortex. In addition to its role in axon guidance plays also an important redundant role with other ephrin-B receptors in development and maturation of dendritic spines and the formation of excitatory synapses. Controls other aspects of development through regulation of cell migration and positioning. This includes angiogenesis, palate development and thymic epithelium development for instance. Forward and reverse signaling through the EFNB2/EPHB3 complex also regulate migration and adhesion of cells that tubularize the urethra and septate the cloaca. Finally, plays an important role in intestinal epithelium differentiation segregating progenitor from differentiated cells in the crypt. Ephrin receptors and their ligands, the ephrins, mediate numerous developmental processes, particularly in the nervous system. Based on their structures and sequence relationships, ephrins are divided into the ephrin-A (EFNA) class, which are anchored to the membrane by a glycosylphosphatidylinositol linkage, and the ephrin-B (EFNB) class, which are transmembrane proteins. The Eph family of receptors are divided into two groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. Ephrin receptors make up the largest subgroup of the receptor tyrosine kinase (RTK) family. This gene encodes a receptor for ephrin-B family members. [provided by RefSeq, Mar 2010]

Uniprot Accession IDs

• P54753
• Q7Z740

Gene Name

• EPHB3

Ensembl ID

• ENST00000330394
• ENSP00000332118
• ENSG00000182580

Symbol

• ETK2
• HEK2
• TYRO6
• EK2
• ETK2
• HEK2
• TYRO6

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
protein domain	1
molecular function	0.98
PubMedID	0.82
biological process	0.78
transcription factor binding site profile	0.72

Protein Classes

DTO Classes

Protein / Kinase / Protein Kinase / Tk Group / Eph Family / Ephrin Type-b Receptor 3

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 130.24   (req: < 5)

Gene RIFs: 18   (req: <= 3)

Antibodies: 510   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 130.24   (req: >= 5)

Gene RIFs: 18   (req: > 3)

Antibodies: 510   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 31

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligands: 4

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 1

Expression Data (0 Tissues)

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No expression data found

Protein Sequence and Structure

Residue Counts

Protein Sequence

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Related Tools (5)

ProKinO

The ProKinO is a protein kinase-specific ontology, which provides a controlled vocabulary of terms, their hierarchy, and relationships unifying sequence, structure, function, mutation and pathway information on kinases.

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Target Illumination GWAS Analytics (TIGA)

TIGA scores and ranks GWAS discovered associations according to the quantity and quality of the evidence supporting the association.

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GENEVA

GENEVA (GENe Expression Variance Analysis) allows you to identify RNA-sequencing datasets from the Gene Expression Omnibus (GEO) that contain conditions modulating a gene or a gene signature.

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GlyGen

GlyGen is a data integration and dissemination project for carbohydrate and glycoconjugate related data.

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ARCHS4

ARCHS4 provides access to gene-function predictions based on RNA-seq co-expression, and gene expression levels across cell and tissues.

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Approved Drugs (1)

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1 – 1 of 1

dasatinib

EPHB3Tchem Kinase

INHIBITOR pKd : 7.89

Active Ligands (4)

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1 – 4 of 4

TG-100572

EPHB3Tchem Kinase

pKd : 9.05

CHEMBL566515

EPHB3Tchem Kinase

pIC50 : 9.04

compound 20 [PMID: 23489211]

EPHB3Tchem Kinase

pIC50 : 5.82

CHEMBL4638981

EPHB3Tchem Kinase

pIC50 : 8.89

Protein-Protein Interactions (126)

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1 – 10 of 126

• See Interactions on String-DB

EFNB2

Tbio

Novelty:  0.00255095

p_int:  0.999988876

p_ni:  0.000011124

Score:  0.998

Data Source:  BioPlex,STRINGDB

C16orf58

Tdark

Novelty:  0.34461652

p_int:  0.999584618

p_ni:  0.000414807

p_wrong:  5.74e-7

Score:  0.189

Data Source:  BioPlex,STRINGDB

ADGRG5

Tdark

Family:  GPCR

Novelty:  0.26575982

p_int:  0.998203905

p_ni:  0.001780833

p_wrong:  0.000015262

Score:  0.159

Data Source:  BioPlex,STRINGDB

EFNA5

Tbio

Novelty:  0.00134985

Score:  0.997

Data Source:  STRINGDB

EFNB3

Tbio

Novelty:  0.0120367

Score:  0.995

Data Source:  STRINGDB

EFNB1

Tbio

Novelty:  0.00523161

Score:  0.995

Data Source:  STRINGDB

EFNA3

Tbio

Novelty:  0.01819539

Score:  0.993

Data Source:  STRINGDB

EFNA2

Tbio

Novelty:  0.01184859

Score:  0.992

Data Source:  STRINGDB

EFNA4

Tbio

Novelty:  0.03628159

Score:  0.992

Data Source:  STRINGDB

EFNA1

Tbio

Family:  Kinase

Novelty:  0.00732252

Score:  0.992

Data Source:  STRINGDB

Nearest Tclin Targets (1)

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Downstream (1)

1 – 1 of 1

ABL1

Tclin

Family:  Kinase

KEGG Distance:  1

Common Pathways:  1

1: Axon guidance

Pathways (14)

Reactome (5)

KEGG (1)

PathwayCommons (4)

WikiPathways (4)

Axon guidance (R-HSA-422475)

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Find Similar Targets

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5

1 – 5 of 5

Data Source	Name	Explore in Pharos	Explore in Source
Reactome	Axon guidance	533 targets	R-HSA-422475
Reactome	Developmental Biology	1055 targets	R-HSA-1266738
Reactome	EPH-Ephrin signaling	92 targets	R-HSA-2682334
Reactome	EPH-ephrin mediated repulsion of cells	49 targets	R-HSA-3928665
Reactome	Ephrin signaling	19 targets	R-HSA-3928664

Name	Explore in Pharos	Explore in Source
Axon guidance	533 targets	R-HSA-422475
Developmental Biology	1055 targets	R-HSA-1266738
EPH-Ephrin signaling	92 targets	R-HSA-2682334
EPH-ephrin mediated repulsion of cells	49 targets	R-HSA-3928665
Ephrin signaling	19 targets	R-HSA-3928664

Viral Interactions (0)

No viral interactions found

Gene Ontology Terms (39)

Functions (7)

Components (8)

Processes (24)

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10

1 – 7 of 7

GO Term	Evidence	Assigned by
protein tyrosine kinase activity	Inferred from Experiment (EXP)	Reactome
ephrin receptor activity	Inferred from Direct Assay (IDA)	UniProtKB
transmembrane receptor protein tyrosine kinase activity	Inferred from Biological aspect of Ancestor (IBA)	GO_Central
transmembrane signaling receptor activity	Inferred from Biological aspect of Ancestor (IBA)	GO_Central
transmembrane-ephrin receptor activity	Inferred from Biological aspect of Ancestor (IBA)	GO_Central
ATP binding	Inferred from Electronic Annotation (IEA)	UniProtKB-KW
axon guidance receptor activity	Inferred from Electronic Annotation (IEA)	Ensembl

Disease Associations (null)

No disease associations found

GWAS Traits (1)

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5

1 – 1 of 1

GWAS Trait	EFO ID	Study Count	SNP Count	Beta Count	Odds Ratio	Evidence (Mean Rank Score)	Provenance
nose morphology measurement	EFO_0007843	1	1	1		13.4

• Explore on Target Illumination GWAS Analytics (TIGA)

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5

1 – 1 of 1

GWAS Trait	EFO ID	Beta Count	Odds Ratio	Evidence (Mean Rank Score)	Provenance
nose morphology measurement	EFO_0007843	1		13.4

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Find similar targets by:

UniProt Keyword Find Similar Targets

No Header	No Header
3D-structure
Angiogenesis
ATP-binding
Cell membrane
Cell projection
Complete proteome
Developmental protein
Disulfide bond
Glycoprotein
Kinase

GWAS Trait Find Similar Targets

No Header	No Header
nose morphology measurement

MGI Phenotype Find Similar Targets

No Header	No Header
cellular phenotype
nervous system phenotype

IDG Resources

No IDG generated resources found

Orthologs (12)

1 – 5 of 12

Species	Name	Source ID	Gene ID	OMA	EggNOG	Inparanoid
Chimp	EPH receptor B3	VGNC:1810	460894
Macaque	EPH receptor B3		701811
Mouse	Eph receptor B3	MGI:104770	13845
Rat	Eph receptor B3	RGD:1305602	287989
Dog	EPH receptor B3	VGNC:40412	488108

Species	Name	OMA	EggNOG	Inparanoid
Chimp	EPH receptor B3
Macaque	EPH receptor B3
Mouse	Eph receptor B3
Rat	Eph receptor B3
Dog	EPH receptor B3

Publication Statistics

PubMed Score 130.24

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PubTator Score 48.52

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Patents

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Related Publications

Text Mined References (38)

GeneRif Annotations (18)

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PMID	Year	Title