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
psaBPhotosystem I core protein PsaB; PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin or cytochrome c6; Belongs to the PsaA/PsaB family. (746 aa)    
Predicted Functional Partners:
psaC
Photosystem I iron-sulfur protein PsaC; Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized a [...]
  
 
 0.998
ACL46316.1
PFAM: photosystem I reaction center protein PsaF subunit III; KEGG: tel:tlr2411 plastocyanin docking protein.
  
 
 0.996
ACL46557.1
PFAM: photosystem I protein PsaD; KEGG: tel:tll1724 photosystem I subunit II.
  
 
 0.996
psaA
Photosystem I core protein PsaA; PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin or cytochrome c6.
 
 
0.992
psaJ
Photosystem I reaction centre subunit IX / PsaJ; May help in the organization of the PsaE and PsaF subunits. Belongs to the PsaJ family.
  
 
 0.987
psaE
Photosystem I reaction centre subunit IV/PsaE; Stabilizes the interaction between PsaC and the PSI core, assists the docking of the ferredoxin to PSI and interacts with ferredoxin-NADP oxidoreductase; Belongs to the PsaE family.
  
 
 0.984
ACL44792.1
TIGRFAM: chlorophyll a/b binding light-harvesting protein; PFAM: photosystem antenna family protein; KEGG: cyt:cce_1785 iron-stress chlorophyll-binding protein, photosystem II CP43 protein.
  
 
 0.984
psaE-2
Photosystem I reaction centre subunit IV/PsaE; Stabilizes the interaction between PsaC and the PSI core, assists the docking of the ferredoxin to PSI and interacts with ferredoxin-NADP oxidoreductase; Belongs to the PsaE family.
  
 
 0.984
ACL43574.1
PFAM: photosystem I reaction centre subunit XI PsaL; KEGG: ana:all0107 photosystem I reaction center subunit XI.
  
 
 0.974
psaL
PFAM: photosystem I reaction centre subunit XI PsaL; KEGG: tel:tlr2404 photosystem I reaction center subunit XI.
  
 
 0.961
Your Current Organism:
Cyanothece sp. PCC7425
NCBI taxonomy Id: 395961
Other names: C. sp. PCC 7425, Cyanothece sp. ATCC 29141, Cyanothece sp. PCC 7425, Synechococcus sp. PCC 7425
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STRING is a Core Data Resource as designated by Global Biodata Coalition and ELIXIR.