Deorphanization of the human leukocyte tyrosine kinase (LTK) receptor by a signaling screen of the extracellular proteome.
In: Proceedings of the National Academy of Sciences of the United States of America, Jg. 111 (2014-11-04), Heft 44, S. 15741-15745
Online
academicJournal
Zugriff:
There are many transmembrane receptor-like proteins whose ligands have not been identified. A strategy for finding ligands when little is known about their tissue source is to screen each extracellular protein individually expressed in an array format by using a sensitive functional readout. Taking this approach, we have screened a large collection (3,191 proteins) of extracellular proteins for their ability to activate signaling of an orphan receptor, leukocyte tyrosine kinase (LTK). Only two related secreted factors, FAM150A and FAM150B (family with sequence similarity 150 member A and member B), stimulated LTK phosphorylation. FAM150A binds LTK extracellular domain with high affinity {KD = 28 pM). FAM150A stimulates LTK phosphorylation in a ligand-dependent manner. This strategy provides an efficient approach for identifying functional ligands for other orphan receptors. [ABSTRACT FROM AUTHOR]
Titel: |
Deorphanization of the human leukocyte tyrosine kinase (LTK) receptor by a signaling screen of the extracellular proteome.
|
---|---|
Autor/in / Beteiligte Person: | Zhang, Hongbing ; Pao, Lily I. ; Zhou, Aileen ; Brace, Arthur D. ; Halenbeck, Robert ; Hsu, Amy W. ; Bray, Thomas L. ; Hestir, Kevin ; Bosch, Elizabeth ; Lee, Ernestine ; Wang, Gang ; Liu, Haixia ; Wong, Brian R. ; Michael Kavanaugh, W. ; Williams, Lewis T. |
Link: | |
Zeitschrift: | Proceedings of the National Academy of Sciences of the United States of America, Jg. 111 (2014-11-04), Heft 44, S. 15741-15745 |
Veröffentlichung: | 2014 |
Medientyp: | academicJournal |
ISSN: | 0027-8424 (print) |
DOI: | 10.1073/pnas.1412009111 |
Schlagwort: |
|
Sonstiges: |
|