Molecular Target Synopsis
Domains and Structures
Drugs and Clinical Candidates
Ligand Efficiency Plot
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
Germline Genetics

EFNA5 (P52803) - Overview - Molecular Target Synopsis


EFNA5, Ephrin-A5
UniProt P52803

Also Known as EFNA5_HUMAN, EFNA5, EPLG7, LERK7

Cell surface GPI-bound ligand for Eph receptors, a family of receptor tyrosine kinases which are crucial for migration, repulsion and adhesion during neuronal, vascular and epithelial development. Binds promiscuously Eph receptors 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. Induces compartmentalized signaling within a caveolae-like membrane microdomain when bound to the extracellular domain of its cognate receptor. This signaling event requires the activity of the Fyn tyrosine kinase. Activates the EPHA3 receptor to regulate cell-cell adhesion and cytoskeletal organization. With the receptor EPHA2 may regulate lens fiber cells shape and interactions and be important for lens transparency maintenance. May function actively to stimulate axon fasciculation. The interaction of EFNA5 with EPHA5 also mediates communication between pancreatic islet cells to regulate glucose-stimulated insulin secretion. Cognate/functional ligand for EPHA7, their interaction regulates brain development modulating cell-cell adhesion and repulsion. Binds to EPHB2. Interacts with EPHA8; activates EPHA8 (By similarity). Binds to the receptor tyrosine kinases EPHA2, EPHA3 and EPHB1. Forms a ternary EFNA5-EPHA3-ADAM10 complex mediating EFNA5 extracellular domain shedding by ADAM10 which regulates the EFNA5-EPHA3 complex internalization and function.

Inspect Structure
See all 3D Structures for EFNA5

Isoforms / Transcripts (Protein Coding)

Protein Length Ensembl Gene Ensembl Transcript Ensembl Protein Uniprot Isoform

Sub-cellular localization

UniProt: EFNA5 is active in the following subcellular-locations: caveola, cell membrane, membrane.
GO terms: EFNA5 is active in the following subcellular-locations: adherens junction, anchored component of external side of plasma membrane, basement membrane, caveola, GABA-ergic synapse, plasma membrane.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project EFNA5 has gain in 2 cell-lines, loss in 1 cell-lines and no signal in 1002 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: MCF7, PC_3, SK_MEL_5

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: LNCAP, SK-N-FI, Calu-3

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: SK-N-SH, NHLF, IMR-90

(see details)

RNA Interference

EFNA5 was reported in the following RNAI studies:

Cell - Large Scale Profiling of Kinase Dependencies in Cancer Cell Lines, the highest RNAi cell lines are: SKOV3, COV504. (see details)

3D Structures

For EFNA5 there are:
8 structures (13 chains) solved
5 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

EFNA5 has been screened with compounds ( bioactivities). (see details)