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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iscSCysteine desulfurase (tRNA sulfurtransferase; Master enzyme that delivers sulfur to a number of partners involved in Fe-S cluster assembly, tRNA modification or cofactor biosynthesis. Catalyzes the removal of elemental sulfur atoms from cysteine to produce alanine. Functions as a sulfur delivery protein for Fe-S cluster synthesis onto IscU, an Fe-S scaffold assembly protein, as well as other S acceptor proteins; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. NifS/IscS subfamily. (405 aa)    
Predicted Functional Partners:
iscU
Fe-S assembly protein; A scaffold on which IscS assembles Fe-S clusters. It is likely that Fe-S cluster coordination is flexible as the role of this complex is to build and then hand off Fe-S clusters.
 
 0.999
iscR
Transcriptional repressor of the iscRSUA operon, involved in assembly of Fe-S clusters; Regulates the transcription of several operons and genes involved in the biogenesis of Fe-S clusters and Fe-S-containing proteins.
 
  
 0.993
sirA
Small ubiquitous RNA-binding protein; Sulfur carrier protein which probably makes part of a sulfur- relay system; Belongs to the sulfur carrier protein TusA family.
 
 
 0.986
thiI
Thiamine biosynthesis protein; Catalyzes the ATP-dependent transfer of a sulfur to tRNA to produce 4-thiouridine in position 8 of tRNAs, which functions as a near-UV photosensor. Also catalyzes the transfer of sulfur to the sulfur carrier protein ThiS, forming ThiS-thiocarboxylate. This is a step in the synthesis of thiazole, in the thiamine biosynthesis pathway. The sulfur is donated as persulfide by IscS.
  
 0.974
fdx
[2Fe-2S] ferredoxin, electron carrier protein, involved in assembly of Fe-S clusters; Function of homologous gene experimentally demonstrated in an other organism; enzyme.
 
 0.970
iscA
Iron-binding protein IscA; Is able to transfer iron-sulfur clusters to apo-ferredoxin. Multiple cycles of [2Fe2S] cluster formation and transfer are observed, suggesting that IscA acts catalytically. Recruits intracellular free iron so as to provide iron for the assembly of transient iron-sulfur cluster in IscU in the presence of IscS, L-cysteine and the thioredoxin reductase system; Belongs to the HesB/IscA family.
 
  
 0.962
hscB
Co-chaperone protein Hsc20, involved in assembly of Fe-S clusters (specific for IscU); Co-chaperone involved in the maturation of iron-sulfur cluster-containing proteins. Seems to help targeting proteins to be folded toward HscA; Belongs to the HscB family.
 
 
 0.957
thiF
Putative adenylyltransferase; Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy; enzyme.
   
 0.953
PSHAa1138
Putative enzyme of the cysteine desulfurase family, metallo-beta-lactamase superfamily; Function proposed based on presence of conserved amino acid motif, structural feature or limited homolgy; enzyme.
 
 
0.935
nfuA
Conserved protein of unknown function; Involved in iron-sulfur cluster biogenesis. Binds a 4Fe-4S cluster, can transfer this cluster to apoproteins, and thereby intervenes in the maturation of Fe/S proteins. Could also act as a scaffold/chaperone for damaged Fe/S proteins.
  
 
 0.916
Your Current Organism:
Pseudoalteromonas haloplanktis
NCBI taxonomy Id: 326442
Other names: P. haloplanktis TAC125, Pseudoalteromonas haloplanktis TAC125, Pseudoalteromonas haloplanktis str. TAC125, Pseudoalteromonas haloplanktis strain TAC125
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