The domain within your query sequence starts at position 1 and ends at position 66; the E-value for the Ephrin_lbd domain shown below is 2.2e-25.



PFAM accession number:PF01404
Interpro abstract (IPR001090):

The Eph receptors, which bind a group of cell-membrane-anchored ligands known as ephrins, represent the largest subfamily of receptor tyrosine kinases (RTKs). The Eph receptors and their ephrin ligands control a diverse array of cell-cell interactions in the nervous and vascular systems. On ephrin binding, the Eph kinase domain is activated, initiating 'forward' signaling in the receptor-expressing cells. Simultaneously, signals are also induced in the ligand-expressing cells a phenomenon referred to as 'reverse' signalling. The extracellular Eph receptor region contains a conserved 180- amino-acid N-terminal ligand-binding domain (LBD) which is both necessary and sufficient for bindings of the receptors to their ephrin ligands. An adjacent cysteine-rich region might be involved in receptor-receptor oligomerization often observed on ligand binding, whereas the next two fibronectin type III repeats have yet to be assigned a clear biological function. The cytoplasmic Eph receptor region contains a kinase domain, a sterile alpha motif (SAM) domain, and a PDZ-binding motif. The ligand-binding domain (LBD) of Eph receptors is unique to this family of RTKs ans shares no significant amino-acid-sequence homology with other known proteins [ (PUBMED:9853759) (PUBMED:11780069) (PUBMED:19525919) ].

The Eph LBD domain forms a compact globular structure which folds into a jellyroll beta-sandwich composed of 11 antiparallel beta-strands. It has two antiparallel beta-sheets, with the usual left-handed twist, packed against each other to form a compact beta-sandwich, and a short 3(10) helix [ (PUBMED:9853759) (PUBMED:11780069) (PUBMED:19525919) ].

GO function:protein binding (GO:0005515)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry Ephrin_lbd