Recombinant Human Proto-oncogene tyrosine-protein kinase ROS (ROS1), Truncated

Uniprot Id

P08922

Target Species

Human

Target Name

ROS1

Target Full Name

Proto-oncogene tyrosine-protein kinase ROS

Target Function

Orphan receptor tyrosine kinase (RTK) that plays a role in epithelial cell differentiation and regionalization of the proximal epididymal epithelium. May activate several downstream signaling pathways related to cell differentiation, proliferation, growth and survival including the PI3 kinase-mTOR signaling pathway. Mediates the phosphorylation of PTPN11, an activator of this pathway. May also phosphorylate and activate the transcription factor STAT3 to control anchorage-independent cell growth. Mediates the phosphorylation and the activation of VAV3, a guanine nucleotide exchange factor regulating cell morphology. May activate other downstream signaling proteins including AKT1, MAPK1, MAPK3, IRS1 and PLCG2.

Target Involvement

A chromosomal aberration involving ROS1 is found in a glioblastoma multiforme sample. An intra-chromosomal deletion del(6)(q21q21) is responsible for the formation of GOPC-ROS1 chimeric protein which is localized to the Golgi and has a constitutive receptor tyrosine kinase activity. A SLC34A2-ROS1 chimeric protein produced in non-small cell lung cancer cells also retains a constitutive kinase activity. A third type of chimeric protein CD74-ROS1 was also identified in those cells.

Target Subcellular Location

Cell membrane; Single-pass type I membrane protein.

Target Protein Families

Protein kinase superfamily, Tyr protein kinase family, Insulin receptor subfamily

Target Tissue Specificity

Expressed in brain. Expression is increased in primary gliomas.

Target Synonyms

c ros 1; c ros; c ros oncogene 1 receptor tyrosine kinase; c Ros receptor tyrosine kinase; c ros1; MCF 3; MCF3; Oncogene ROS; OTTHUMP00000017814; OTTHUMP00000017815; OTTHUMP00000040389; Proto oncogene c ros 1 protein; Proto oncogene c Ros; Proto oncogene tyrosine protein kinase ROS; Proto oncogene tyrosine protein kinase ROS precursor; Proto-oncogene c-Ros-1; Proto-oncogene tyrosine-protein kinase ROS; Receptor tyrosine kinase c ros oncogene 1; Ros 1; ROS 1C; ROS; ROS proto oncogene 1 ; receptor tyrosine kinase; ROS_HUMAN; ROS1; ROS1C; Transmembrane tyrosine specific protein kinase; v ros avian UR2 sarcoma virus oncogene homolog 1; v ros UR2 sarcoma virus oncogene homolog 1

Target Background

This proto-oncogene, highly-expressed in a variety of tumor cell lines, belongs to the sevenless subfamily of tyrosine kinase insulin receptor genes. The protein encoded by this gene is a type I integral membrane protein with tyrosine kinase activity. The protein may function as a growth or differentiation factor receptor.