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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Gene Fusion
Cooccurrence
Coexpression
Experiments
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[Homology]
Score
prcAProteasome alpha subunit; Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The M.smegmatis proteasome is able to cleave oligopeptides after hydrophobic residues, thus displaying chymotrypsin-like activity. In complex with the ATPase Mpa, degrades protein targets conjugated to a prokaryotic ubiquitin- like protein (Pup). Identified substrates of the M.smegmatis proteasome are the pupylated SodA and Ino1 proteins. The Pup- proteasome system (PPS) is essential for survival under starvation; PPS likely functions to recycle a [...] (246 aa)    
Predicted Functional Partners:
prcB
Proteasome beta subunit; Component of the proteasome core, a large protease complex with broad specificity involved in protein degradation. The M.smegmatis proteasome is able to cleave oligopeptides after hydrophobic residues, thus displaying chymotrypsin-like activity. In complex with the ATPase Mpa, degrades protein targets conjugated to a prokaryotic ubiquitin- like protein (Pup). Among the identified substrates of the M.smegmatis proteasome are the pupylated SodA and Ino1 proteins. The Pup-proteasome system (PPS) is essential for survival under starvation; PPS likely functions to r [...]
 
 0.999
mpa
ATPase, AAA family protein; ATPase which is responsible for recognizing, binding, unfolding and translocation of pupylated proteins into the bacterial 20S proteasome core particle. May be essential for opening the gate of the 20S proteasome via an interaction with its C-terminus, thereby allowing substrate entry and access to the site of proteolysis. Thus, the C-termini of the proteasomal ATPase may function like a 'key in a lock' to induce gate opening and therefore regulate proteolysis.
 
 0.999
pup
Conserved hypothetical protein; Protein modifier that is covalently attached to lysine residues of substrate proteins, thereby targeting them for proteasomal degradation. The tagging system is termed pupylation. Among the identified substrates are the SodA and Ino1 proteins.
 
 
 0.995
pafA
Proteasome component; Catalyzes the covalent attachment of the prokaryotic ubiquitin-like protein modifier Pup to the proteasomal substrate proteins, thereby targeting them for proteasomal degradation. This tagging system is termed pupylation. The ligation reaction likely involves the side-chain carboxylate of the C-terminal glutamate of Pup and the side-chain amino group of a substrate lysine. Belongs to the Pup ligase/Pup deamidase family. Pup- conjugating enzyme subfamily.
  
 0.994
bpa
Conserved hypothetical protein; Interacts with the core proteasome alpha-subunit (PrcA) through its C-terminal hydrophobic-tyrosine-X motif (HbYX motif). Interaction of Bpa with the proteasome stimulates proteosomal peptidase and casein degradation activity, which suggests Bpa could play a role in the removal of non-native or damaged proteins by influencing the conformation of the proteasome complex upon interaction (By similarity); Belongs to the Bpa family.
  
 
 0.990
dop
Proteasome component; Specifically catalyzes the deamidation of the C-terminal glutamine of the prokaryotic ubiquitin-like protein Pup to glutamate, thereby rendering Pup competent for conjugation. Probably also displays depupylase (DPUP) activity, removing conjugated Pup from target proteins; thus may be involved in the recycling of Pup and may function similarly to deubiquitinases (DUBs) in eukaryotes to prevent or promote proteasomal degradation of certain proteins. Belongs to the Pup ligase/Pup deamidase family. Pup deamidase subfamily.
  
 0.957
ABK73517.1
Identified by match to protein family HMM PF01398.
   
 0.923
glpK-2
Glycerol kinase; Key enzyme in the regulation of glycerol uptake and metabolism. Catalyzes the phosphorylation of glycerol to yield sn- glycerol 3-phosphate; Belongs to the FGGY kinase family.
   
 0.877
glpK-3
Glycerol kinase; Key enzyme in the regulation of glycerol uptake and metabolism. Catalyzes the phosphorylation of glycerol to yield sn- glycerol 3-phosphate; Belongs to the FGGY kinase family.
   
 0.877
glpK
Glycerol kinase; Key enzyme in the regulation of glycerol uptake and metabolism. Catalyzes the phosphorylation of glycerol to yield sn- glycerol 3-phosphate; Belongs to the FGGY kinase family.
   
 0.876
Your Current Organism:
Mycolicibacterium smegmatis
NCBI taxonomy Id: 246196
Other names: M. smegmatis MC2 155, Mycobacterium smegmatis MC2 155, Mycolicibacterium smegmatis MC2 155
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