STRINGSTRING
STRING protein interaction network
Nodes:
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
Edges:
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
Others
textmining
co-expression
protein homology
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[Homology]
Score
nonCSerine/threonine-protein kinase Smg1; Serine/threonine protein kinase involved in mRNA surveillance. Recognizes the substrate consensus sequence [ST]-Q. Involved in nonsense-mediated decay (NMD) of mRNAs containing premature stop codons, probably by phosphorylating Upf1. (3218 aa)    
Predicted Functional Partners:
Upf2
RE04053p; Upf2 (Upf2) encodes a protein required for nonsense-mediated mRNA decay (NMD). It interacts directly with the product of Upf1 to identify and degrade NMD-substrate mRNAs, including mRNAs containing premature termination codons and a number of normal endogenous mRNAs.
   
 
 0.999
Upf1
Regulator of nonsense transcripts 1 homolog; RNA-dependent helicase and ATPase required for nonsense- mediated decay (NMD) of mRNAs containing premature stop codons. Is recruited to mRNAs upon translation termination and undergoes a cycle of phosphorylation and dephosphorylation; its phosphorylation appears to be a key step in NMD. The formation of an Upf1-Upf2-Upf3 surveillance complex is believed to activate NMD (By similarity).
   
 0.999
eRF3
Eukaryotic translation release factor 3 (eRF3) encodes a GTP-binding protein important in the termination of protein translation.
    
 
 0.999
Smg5
Smg5, isoform A; Smg5 (Smg5) encodes a protein involved in mRNA catabolism.
   
 
 0.994
eRF1
Eukaryotic peptide chain release factor subunit 1; Directs the termination of nascent peptide synthesis (translation) in response to the termination codons UAA, UAG and UGA.
    
 
 0.994
Upf3
Upf3, isoform B; Upf3 (Upf3) encodes a protein that regulates targets of the nonsense-mediated mRNA decay pathway. This pathway participates in homeostatic gene expression regulation and plays a quality control role in the elimination of mRNAs with premature termination codons. The product of Upf3 is involved in cell cycle progression and general developmental rate.
    
 
 0.993
CG7483
Eukaryotic initiation factor 4A-III; ATP-dependent RNA helicase. Core component of the splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junctions on mRNAs. Involved in exon definition of genes containing long introns, including the rolled/MAPK gene. Has a role in oskar mRNA localization at the posterior pole of the developing oocyte.
   
 
 0.984
Smg6
GH14566p; Smg6 (Smg6) encodes an RNA endonuclease that is required for nonsense mediated mRNA decay (NMD). Upon recognition of an NMD-targeted transcript, it cleaves the mRNA in the vicinity of the termination codon, exposing free 5' and 3' ends leading to the complete exonucleolytic degradation of the target.
   
 
 0.983
Cbp20
Nuclear cap-binding protein subunit 2; Component of the cap-binding complex (CBC), which binds co- transcriptionally to the 5' cap of pre-mRNAs and is involved in various processes such as pre-mRNA splicing and RNA-mediated gene silencing (RNAi). The CBC complex is involved in miRNA-mediated RNA interference via its interaction with Ars2 and is required for primary microRNAs (miRNAs) processing. Also involved in innate immunity via the short interfering RNAs (siRNAs) processing machinery by restricting the viral RNA production. In the CBC complex, Cbp20 recognizes and binds capped RNAs [...]
    
 
 0.978
tsu
RNA-binding protein 8A; Core component of the splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junctions on mRNAs. Involved in exon definition of genes containing long introns, including the rolled/MAPK gene. The mago-tsu heterodimer interacts with the EJC key regulator Pym leading to EJC disassembly in the cytoplasm. Has a role in oskar mRNA localization to the posterior pole of the developing oocyte. Belongs to the RBM8A family.
    
 
 0.960
Your Current Organism:
Drosophila melanogaster
NCBI taxonomy Id: 7227
Other names: D. melanogaster, Diptera sp. DNAS-2A9-224646, Sophophora melanogaster, fruit fly
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