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.
Knowledge-based Evidence
from curated databases
textmining
Assay-based Predictions
experimentally determined
co-expression
Genomic Predictions
gene neighborhood
gene co-occurrence
gene fusions
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[Homology]
Score
leuB3-isopropylmalate dehydrogenase 1 (leuB1); Catalyzes the oxidation of 3-carboxy-2-hydroxy-4- methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2- oxopentanoate, which decarboxylates to 4-methyl-2-oxopentanoate (2- oxoisocaproate). Also catalyzes the oxidative decarboxylation of 3- methylmalate to 2-oxobutyrate, and that of D-malate to pyruvate. Cannot use NADP(+) instead of NAD(+). Cannot catalyze the oxidation of L- malate, L-tartrate, D-tartrate, DL-isocitrate, or DL-lactate. (333 aa)    
Predicted Functional Partners:
leuC
3-isopropylmalate dehydratase (leuC); Enzyme with broad specificity that catalyzes reversible hydroxyacid isomerizations via dehydration/hydration reactions. Catalyzes the isomerization between 2-isopropylmalate and 3- isopropylmalate, via the formation of 2-isopropylmaleate, a step involved in leucine biosynthesis. Catalyzes the isomerization between 2-methylmalate and 3-methylmalate, via the formation of 2-methylmaleate (citraconate), a step involved in isoleucine biosynthesis. Also displays malease activity, i.e. catalyzes the hydration of maleate to form (R)-malate; Belongs to the [...]
 0.994
leuD
3-isopropylmalate dehydratase (leuD); Enzyme with broad specificity that catalyzes reversible hydroxyacid isomerizations via dehydration/hydration reactions. Catalyzes the isomerization between 2-isopropylmalate and 3- isopropylmalate, via the formation of 2-isopropylmaleate, a step involved in leucine biosynthesis. Catalyzes the isomerization between 2-methylmalate and 3-methylmalate, via the formation of 2-methylmaleate (citraconate), a step involved in isoleucine biosynthesis. Also displays malease activity, i.e. catalyzes the hydration of maleate to form (R)-malate.
 
 
 0.987
ilvH
Acetolactate synthase small subunit (ilvN); Similar to GB:L03181 SP:P37252 PID:143092 PID:1770067 GB:AL009126 percent identity: 49.37; identified by sequence similarity; putative; Belongs to the acetolactate synthase small subunit family.
  
 0.984
ilvB
Acetolactate synthase large subunit (ilvB); Similar to GB:L03181 SP:P37251 PID:143091 percent identity: 50.18; identified by sequence similarity; putative; Belongs to the TPP enzyme family.
 
 0.971
MJ_0663
Acetolactate synthase large subunit (ilvB); Similar to GB:L10328 SP:P08142 GB:J01633 GB:X02541 PID:146455 percent identity: 30.21; identified by sequence similarity; putative; Belongs to the TPP enzyme family.
  
 0.951
hacB
3-isopropylmalate dehydratase (leuD); Hydro-lyase with broad substrate specificity for cis- unsaturated tricarboxylic acids. Catalyzes both the reversible dehydration of (R)-homocitrate ((R)-2-hydroxybutane-1,2,4- tricarboxylate) to produce cis-homoaconitate ((Z)-but-1-ene-1,2,4- tricarboxylate), and its hydration to homoisocitrate ((1R,2S)-1- hydroxybutane-1,2,4-tricarboxylate). Is also able to hydrate the analogous longer chain substrates cis-homo(2)-aconitate, cis-homo(3)- aconitate, and even the non-physiological cis-homo(4)-aconitate with similar efficiency. These reactions are pa [...]
 
 
 0.951
hacA
3-isopropylmalate dehydratase (leuC); Hydro-lyase with broad substrate specificity for cis- unsaturated tricarboxylic acids. Catalyzes both the reversible dehydration of (R)-homocitrate ((R)-2-hydroxybutane-1,2,4- tricarboxylate) to produce cis-homoaconitate ((Z)-but-1-ene-1,2,4- tricarboxylate), and its hydration to homoisocitrate ((1R,2S)-1- hydroxybutane-1,2,4-tricarboxylate). Is also able to hydrate the analogous longer chain substrates cis-homo(2)-aconitate, cis-homo(3)- aconitate, and even the non-physiological cis-homo(4)-aconitate with similar efficiency. These reactions are pa [...]
 
 0.946
argD
Acetylornithine aminotransferase (argD); Similar to GB:X78854 PID:580729 SP:P54752 percent identity: 46.37; identified by sequence similarity; putative; Belongs to the class-III pyridoxal-phosphate-dependent aminotransferase family. ArgD subfamily.
  
 
 0.888
mdh
L-lactate dehydrogenase EGAD|7256|705; Catalyzes the reversible oxidation of (S)-malate and (S)- sulfolactate to oxaloacetate and sulfopyruvate, respectively. Can use both NADH and NADPH, although activity is higher with NADPH. Oxidation of (S)-sulfolactate is observed only in the presence of NADP(+). Can also oxidize tartrate. Cannot reduce pyruvate, nor alpha-ketoglutarate. Belongs to the LDH/MDH superfamily.
  
 0.849
sucC
succinyl-CoA synthetase, beta subunit; Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The beta subunit provides nucleotide specificity of the enzyme and binds the substrate succinate, while the binding sites for coenzyme A and phosphate are found in the alpha subunit.
  
 0.841
Your Current Organism:
Methanocaldococcus jannaschii
NCBI taxonomy Id: 243232
Other names: M. jannaschii DSM 2661, Methanocaldococcus jannaschii DSM 2661, Methanocaldococcus jannaschii str. DSM 2661, Methanococcus jannaschii DSM 2661
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