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
hypECarbamoyl dehydratase, hydrogenases 1,2,3 maturation protein; Involved in the maturation of [NiFe] hydrogenases. Along with HypF, it catalyzes the synthesis of the CN ligands of the active site iron of [NiFe]-hydrogenases. HypE catalyzes the ATP-dependent dehydration of the carboxamido group attached to its C-terminal cysteine to a cyano group. The cyano group is then transferred from HypE to the HypC-HypD complex or the HybG-HypD complex. (336 aa)    
Predicted Functional Partners:
hypF
Carbamoyl phosphate phosphatase and [NiFe] hydrogenase maturation protein; Involved in the maturation of [NiFe] hydrogenases. Along with HypE, it catalyzes the synthesis of the CN ligands of the active site iron of [NiFe]-hydrogenases. HypF functions as a carbamoyl transferase using carbamoylphosphate as a substrate and transferring the carboxamido moiety in an ATP-dependent reaction to the thiolate of the C-terminal cysteine of HypE yielding a protein-S-carboxamide. In the absence of any other substrate, displays carbamoyl-phosphate phosphatase activity.
 
 0.999
hypC
Hydrogenase maturation protein; Involved in the maturation of [NiFe] hydrogenases. Involved in the biosynthesis of the Fe(CN)(2)CO cofactor. HypC delivers iron-bound CO(2) to HypD where reduction to CO probably occurs. In complex with HypD, accepts the cyanide ligand generated by HypF and HypE, and also coordinates the carbon monoxide ligand. Involved in the maturation of the hydrogenase 3. Also participates in the maturation of hydrogenase 1.
 
 
 0.999
hypD
Hydrogenase maturation protein; Involved in the maturation of [NiFe] hydrogenases. Involved in the biosynthesis of the Fe(CN)(2)CO cofactor. HypD may act as a scaffold on which the Fe(CN)(2)CO cofactor is formed. In complex with HypC, accepts the cyanide ligand generated by HypF and HypE, and also coordinates the carbon monoxide ligand. Required for the formation of all three hydrogenase isoenzymes (Probable).
 0.999
hypA
Protein involved in nickel insertion into hydrogenases 3; Involved in the maturation of [NiFe] hydrogenases. Required for nickel insertion into the metal center of the hydrogenase. Mediates transfer of nickel, but not zinc, from the low-affinity metal-binding site in the GTPase domain of HypB to HypA. HypA is involved in maturation of hydrogenase 3. It may partially substitute for the function of HybF and vice versa. May act as a scaffold for assembly of the nickel insertion proteins with the hydrogenase precursor protein after delivery of the iron center. Belongs to the HypA/HybF family.
  
 0.996
hypB
GTP hydrolase involved in nickel liganding into hydrogenases; Involved in the maturation of [NiFe] hydrogenases. Required for nickel insertion into the metal center of the hydrogenase. Exhibits a low intrinsic GTPase activity, which is essential for nickel insertion. In the presence of GDP, nickel, but not zinc, is transferred from the HypB GTPase domain (G-domain) to HypA. Belongs to the SIMIBI class G3E GTPase family. HypB/HupM subfamily.
 
  
 0.996
hybG
Hydrogenase 2 accessory protein; Involved in the maturation of [NiFe] hydrogenases. Involved in the biosynthesis of the Fe(CN)(2)CO cofactor. HybG delivers iron-bound CO(2) to HypD where reduction to CO probably occurs. In complex with HypD, accepts the cyanide ligand generated by HypF and HypE, and also coordinates the carbon monoxide ligand (By similarity). Involved in the maturation of the hydrogenase 2. Also participates in the maturation of hydrogenase 1.
 
 
 0.995
hycI
Protease involved in processing C-terminal end of HycE; Protease involved in the C-terminal processing of HycE, the large subunit of hydrogenase 3; Belongs to the peptidase A31 family.
 
  
 0.914
hybF
Protein involved with the maturation of hydrogenases 1 and 2; Involved in the maturation of [NiFe] hydrogenases. Required for nickel insertion into the metal center of the hydrogenase. HybF is involved in maturation of hydrogenases 1 and 2. It may partially substitute for the function of HypA and vice versa.
 
  
 0.913
hycE
Large subunit of hydrogenase 3 (part of FHL complex); Protein involved in fermentation and anaerobic respiration; Belongs to the complex I 49 kDa subunit family.
 
 
 0.875
hybC
Hydrogenase 2, large subunit; This is one of three E.coli hydrogenases synthesized in response to different physiological conditions. HYD2 is involved in hydrogen uptake; Belongs to the [NiFe]/[NiFeSe] hydrogenase large subunit family.
 
  
 0.871
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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