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
speESpermidine synthase; Catalyzes the irreversible transfer of a propylamine group from the amino donor S-adenosylmethioninamine (decarboxy-AdoMet) to putrescine (1,4-diaminobutane) to yield spermidine. (285 aa)    
Predicted Functional Partners:
speD
S-adenosylmethionine decarboxylase proenzyme; Catalyzes the decarboxylation of S-adenosylmethionine to S- adenosylmethioninamine (dcAdoMet), the propylamine donor required for the synthesis of the polyamines spermine and spermidine from the diamine putrescine; Belongs to the prokaryotic AdoMetDC family. Type 2 subfamily.
 
 
 0.996
MCA1034
Conserved hypothetical protein; Identified by similarity to OMNI:NMB0869; match to protein family HMM PF01564.
  
  
 0.956
MCA1862
Hydrolase, carbon-nitrogen family; Identified by match to protein family HMM PF00795.
  
 
 0.927
nspC
Carboxynorspermidine decarboxylase; Catalyzes the decarboxylation of carboxynorspermidine and carboxyspermidine; Belongs to the Orn/Lys/Arg decarboxylase class-II family. NspC subfamily.
  
 0.914
mtaD
Chlorohydrolase family protein; Catalyzes the deamination of 5-methylthioadenosine and S- adenosyl-L-homocysteine into 5-methylthioinosine and S-inosyl-L- homocysteine, respectively. Is also able to deaminate adenosine. Belongs to the metallo-dependent hydrolases superfamily. MTA/SAH deaminase family.
   
  0.905
MCA0811
Identified by match to protein family HMM PF01048.
     
  0.900
speA
Arginine decarboxylase; Catalyzes the biosynthesis of agmatine from arginine.
    
 0.857
MCA0381
Hydrolase, carbon-nitrogen family; Identified by similarity to OMNI:NTL01NM01917; match to protein family HMM PF00795.
 
  
 0.746
MCA1986
Phosphorylase, family 2; Purine nucleoside phosphorylase which is highly specific for 6-oxopurine nucleosides. Cleaves guanosine or inosine to respective bases and sugar-1-phosphate molecules. Involved in purine salvage.
 
 
 0.637
MCA2048
Oxidoreductase, Gfo/Idh/MocA family; Identified by similarity to OMNI:CC1574; match to protein family HMM PF03446; match to protein family HMM PF07676.
       0.606
Your Current Organism:
Methylococcus capsulatus
NCBI taxonomy Id: 243233
Other names: M. capsulatus str. Bath, Methylococcus capsulatus ATCC 33009, Methylococcus capsulatus Bath, Methylococcus capsulatus MC, Methylococcus capsulatus NCIB 11132, Methylococcus capsulatus str. Bath
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