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
Your Input:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
Databases
Textmining
[Homology]
Score
hpfRibosome hibernation promoting factor HPF; During stationary phase, promotes and stabilizes dimerization of 70S ribosomes by the ribosome modulation factor (RMF), leading to the formation of inactive 100S ribosomes. Converts immature 90S particles formed by RMF into 100S ribosomes. Crystallization with T.thermophilus 70S ribosomes shows it binds in the channel between the head and body of the 30S subunit, where mRNA, tRNAs, initiation factors IF1 and IF3 and elongation factor G would bind; however RMF is still able to bind. In this crystal binding of HPF induces movement of the 30S hea [...] (95 aa)    
Predicted Functional Partners:
rmf
Ribosome modulation factor; During stationary phase, converts 70S ribosomes to an immature dimeric form (90S ribosomes) which are converted to inactive 100S ribosomes (a process called ribosomal hibernation) by the hibernation promoting factor HPF. Inactivates ribosomes by covering the peptidyl transferase (PTase) center of the 23S rRNA and the entrance of peptide exit tunnel. However crystallization with T.thermophilus 70S ribosomes shows it binds near the 3'-end of the 16S rRNA near the anti-Shine-Dalgarno sequence, where it would sterically hinder translation inititation. In this cr [...]
   
 
 0.998
rpsU
30S ribosomal subunit protein S21; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bS21 family.
  
 0.996
rpsI
30S ribosomal subunit protein S9; The C-terminal tail plays a role in the affinity of the 30S P site for different tRNAs. Mutations that decrease this affinity are suppressed in the 70S ribosome.
   
 0.996
rpsT
30S ribosomal subunit protein S20; Binds directly to 16S ribosomal RNA.
    
 0.995
rpsB
30S ribosomal subunit protein S2; Required for ribosomal protein S1 to bind to the 30S subunit.
   
  0.995
rpsP
30S ribosomal subunit protein S16; In addition to being a ribosomal protein, S16 also has a cation-dependent endonuclease activity.
    
 0.995
rpsO
30S ribosomal subunit protein S15; One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it helps nucleate assembly of the platform of the 30S subunit by binding and bridging several RNA helices of the 16S rRNA. Binds to its own mRNA, stabilizing it 5-UTR and preventing its translation.
   
 0.995
rpsD
30S ribosomal subunit protein S4; One of two assembly initiator proteins for the 30S subunit, it binds directly to 16S rRNA where it nucleates assembly of the body of the 30S subunit. Plays a role in mRNA unwinding by the ribosome, possibly by forming part of a processivity clamp. Also functions as a rho-dependent antiterminator of rRNA transcription, increasing the synthesis of rRNA under conditions of excess protein, allowing a more rapid return to homeostasis. Binds directly to RNA polymerase; Belongs to the universal ribosomal protein uS4 family.
  
 0.995
rpsK
30S ribosomal subunit protein S11; Located on the platform of the 30S subunit, it bridges several disparate RNA helices of the 16S rRNA. Forms part of the Shine- Dalgarno cleft in the 70S ribosome (By similarity); Belongs to the universal ribosomal protein uS11 family.
   
  0.995
rpsM
30S ribosomal subunit protein S13; Located at the top of the head of the 30S subunit, it contacts several helices of the 16S rRNA. Contacts the tRNAs in the A and P sites. Belongs to the universal ribosomal protein uS13 family.
   
 0.995
Your Current Organism:
Escherichia coli K12
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli MG1655, Escherichia coli str. K-12 substr. MG1655, Escherichia coli str. K12 substr. MG1655, Escherichia coli str. MG1655, Escherichia coli strain MG1655
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STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.