2N34 image
Deposition Date 2015-05-21
Release Date 2015-07-29
Last Version Date 2024-05-15
Entry Detail
PDB ID:
2N34
Title:
NMR assignments and solution structure of the JAK interaction region of SOCS5
Biological Source:
Source Organism:
Mus musculus (Taxon ID: 10090)
Host Organism:
Method Details:
Experimental Method:
Conformers Calculated:
40
Conformers Submitted:
20
Selection Criteria:
structures with the lowest energy
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Suppressor of cytokine signaling 5
Gene (Uniprot):Socs5
Chain IDs:A
Chain Length:70
Number of Molecules:1
Biological Source:Mus musculus
Primary Citation
Structure and Functional Characterization of the Conserved JAK Interaction Region in the Intrinsically Disordered N-Terminus of SOCS5.
Biochemistry 54 4672 4682 (2015)
PMID: 26173083 DOI: 10.1021/acs.biochem.5b00619

Abstact

SOCS5 can negatively regulate both JAK/STAT and EGF-receptor pathways and has therefore been implicated in regulating both the immune response and tumorigenesis. Understanding the molecular basis for SOCS5 activity may reveal novel ways to target key components of these signaling pathways. The N-terminal region of SOCS5 coordinates critical protein interactions involved in inhibition of JAK/STAT signaling, and a conserved region within the N-terminus of SOCS5 mediates direct binding to the JAK kinase domain. Here we have characterized the solution conformation of this conserved JAK interaction region (JIR) within the largely disordered N-terminus of SOCS5. Using nuclear magnetic resonance (NMR) chemical shift analysis, relaxation measurements, and NOE analysis, we demonstrate the presence of preformed structural elements in the JIR of mouse SOCS5 (mSOCS5175-244), consisting of an α-helix encompassing residues 224-233, preceded by a turn and an extended structure. We have identified a phosphorylation site (Ser211) within the JIR of mSOCS5 and have investigated the role of phosphorylation in modulating JAK binding using site-directed mutagenesis.

Legend

Protein

Chemical

Disease

Primary Citation of related structures