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psaA protein (Synechococcus elongatus PCC7942) - STRING interaction network
"psaA" - Photosystem I P700 chlorophyll a apoprotein A1 in Synechococcus elongatus PCC7942
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Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
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textmining
co-expression
protein homology
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psaAPhotosystem I P700 chlorophyll a apoprotein A1; 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 (763 aa)    
Predicted Functional Partners:
psaC
Photosystem I iron-sulfur center; 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 accept [...] (81 aa)
   
 
  0.999
isiA
Iron stress-induced chlorophyll-binding protein; Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. Also functions as a dissipator of light energy, protecting cells from excessive light under iron-deficient conditions. Sequesters chlorophyll when cells are growing in iron-deficient conditions; it may bind up to 50% of the chlorophyll in iron-starved cells (342 aa)
   
 
  0.999
psaB
Photosystem I P700 chlorophyll a apoprotein A2; 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 (734 aa)
 
 
0.999
psaJ
Photosystem I reaction center subunit IX; May help in the organization of the PsaE and PsaF subunits (44 aa)
   
 
  0.999
psaE
Photosystem I reaction center subunit IV; Stabilizes the interaction between PsaC and the PSI core, assists the docking of the ferredoxin to PSI and interacts with ferredoxin-NADP oxidoreductase (75 aa)
       
  0.997
ABB57032.1
annotation not available (142 aa)
   
 
 
  0.996
ABB57280.1
Photosystem I reaction center subunit III; PSI-F; plastocyanin; cyt c553; docking protein (159 aa)
   
 
 
  0.996
psaI
annotation not available (38 aa)
       
 
  0.993
ABB56439.1
annotation not available (80 aa)
       
 
  0.993
ycf3
Photosystem I assembly protein Ycf3; Essential for the assembly of the photosystem I (PSI) complex. May act as a chaperone-like factor to guide the assembly of the PSI subunits (173 aa)
 
     
  0.966
Your Current Organism:
Synechococcus elongatus PCC7942
NCBI taxonomy Id: 1140
Other names: Anacystis nidulans R2, S. elongatus PCC 7942, Synechococcus elongatus PCC 7942, Synechococcus elongatus PCC7942, Synechococcus leopoliensis UTEX 2434, Synechococcus leopoliensis strain PCC 7942, Synechococcus sp. IAM M-200, Synechococcus sp. PCC 7942
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