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9LZK

The PSI1-IsiA13 complex with double-layered IsiA proteins bound to the monomeric PSI core

Functional Information from GO Data
ChainGOidnamespacecontents
10009521cellular_componentphotosystem
10009767biological_processphotosynthetic electron transport chain
10016020cellular_componentmembrane
10016168molecular_functionchlorophyll binding
10019684biological_processphotosynthesis, light reaction
10031676cellular_componentplasma membrane-derived thylakoid membrane
20009521cellular_componentphotosystem
20009767biological_processphotosynthetic electron transport chain
20016020cellular_componentmembrane
20016168molecular_functionchlorophyll binding
20019684biological_processphotosynthesis, light reaction
20031676cellular_componentplasma membrane-derived thylakoid membrane
30009521cellular_componentphotosystem
30009767biological_processphotosynthetic electron transport chain
30016020cellular_componentmembrane
30016168molecular_functionchlorophyll binding
30019684biological_processphotosynthesis, light reaction
30031676cellular_componentplasma membrane-derived thylakoid membrane
40009521cellular_componentphotosystem
40009767biological_processphotosynthetic electron transport chain
40016020cellular_componentmembrane
40016168molecular_functionchlorophyll binding
40019684biological_processphotosynthesis, light reaction
40031676cellular_componentplasma membrane-derived thylakoid membrane
50009521cellular_componentphotosystem
50009767biological_processphotosynthetic electron transport chain
50016020cellular_componentmembrane
50016168molecular_functionchlorophyll binding
50019684biological_processphotosynthesis, light reaction
50031676cellular_componentplasma membrane-derived thylakoid membrane
60009521cellular_componentphotosystem
60009767biological_processphotosynthetic electron transport chain
60016020cellular_componentmembrane
60016168molecular_functionchlorophyll binding
60019684biological_processphotosynthesis, light reaction
60031676cellular_componentplasma membrane-derived thylakoid membrane
a0009521cellular_componentphotosystem
a0009767biological_processphotosynthetic electron transport chain
a0016020cellular_componentmembrane
a0016168molecular_functionchlorophyll binding
a0019684biological_processphotosynthesis, light reaction
a0031676cellular_componentplasma membrane-derived thylakoid membrane
A0000287molecular_functionmagnesium ion binding
A0005886cellular_componentplasma membrane
A0009055molecular_functionelectron transfer activity
A0009522cellular_componentphotosystem I
A0009579cellular_componentthylakoid
A0015979biological_processphotosynthesis
A0016020cellular_componentmembrane
A0031676cellular_componentplasma membrane-derived thylakoid membrane
A0042651cellular_componentthylakoid membrane
A0046872molecular_functionmetal ion binding
b0009521cellular_componentphotosystem
b0009767biological_processphotosynthetic electron transport chain
b0016020cellular_componentmembrane
b0016168molecular_functionchlorophyll binding
b0019684biological_processphotosynthesis, light reaction
b0031676cellular_componentplasma membrane-derived thylakoid membrane
B0000287molecular_functionmagnesium ion binding
B0005886cellular_componentplasma membrane
B0009055molecular_functionelectron transfer activity
B0009522cellular_componentphotosystem I
B0009579cellular_componentthylakoid
B0015979biological_processphotosynthesis
B0016020cellular_componentmembrane
B0031676cellular_componentplasma membrane-derived thylakoid membrane
B0042651cellular_componentthylakoid membrane
c0009521cellular_componentphotosystem
c0009767biological_processphotosynthetic electron transport chain
c0016020cellular_componentmembrane
c0016168molecular_functionchlorophyll binding
c0019684biological_processphotosynthesis, light reaction
c0031676cellular_componentplasma membrane-derived thylakoid membrane
C0009055molecular_functionelectron transfer activity
C0009522cellular_componentphotosystem I
C0009773biological_processphotosynthetic electron transport in photosystem I
C0015979biological_processphotosynthesis
C0031676cellular_componentplasma membrane-derived thylakoid membrane
C0042651cellular_componentthylakoid membrane
C0051539molecular_function4 iron, 4 sulfur cluster binding
d0009521cellular_componentphotosystem
d0009767biological_processphotosynthetic electron transport chain
d0016020cellular_componentmembrane
d0016168molecular_functionchlorophyll binding
d0019684biological_processphotosynthesis, light reaction
d0031676cellular_componentplasma membrane-derived thylakoid membrane
D0009522cellular_componentphotosystem I
D0009538cellular_componentphotosystem I reaction center
D0015979biological_processphotosynthesis
e0009521cellular_componentphotosystem
e0009767biological_processphotosynthetic electron transport chain
e0016020cellular_componentmembrane
e0016168molecular_functionchlorophyll binding
e0019684biological_processphotosynthesis, light reaction
e0031676cellular_componentplasma membrane-derived thylakoid membrane
E0009522cellular_componentphotosystem I
E0009538cellular_componentphotosystem I reaction center
E0015979biological_processphotosynthesis
E0031676cellular_componentplasma membrane-derived thylakoid membrane
E0042651cellular_componentthylakoid membrane
f0009521cellular_componentphotosystem
f0009767biological_processphotosynthetic electron transport chain
f0016020cellular_componentmembrane
f0016168molecular_functionchlorophyll binding
f0019684biological_processphotosynthesis, light reaction
f0031676cellular_componentplasma membrane-derived thylakoid membrane
F0009522cellular_componentphotosystem I
F0009538cellular_componentphotosystem I reaction center
F0015979biological_processphotosynthesis
g0009521cellular_componentphotosystem
g0009767biological_processphotosynthetic electron transport chain
g0016020cellular_componentmembrane
g0016168molecular_functionchlorophyll binding
g0019684biological_processphotosynthesis, light reaction
g0031676cellular_componentplasma membrane-derived thylakoid membrane
I0009522cellular_componentphotosystem I
I0015979biological_processphotosynthesis
I0031676cellular_componentplasma membrane-derived thylakoid membrane
I0042651cellular_componentthylakoid membrane
J0009522cellular_componentphotosystem I
J0015979biological_processphotosynthesis
J0031676cellular_componentplasma membrane-derived thylakoid membrane
J0042651cellular_componentthylakoid membrane
K0009522cellular_componentphotosystem I
K0015979biological_processphotosynthesis
K0016020cellular_componentmembrane
K0031676cellular_componentplasma membrane-derived thylakoid membrane
K0042651cellular_componentthylakoid membrane
M0015979biological_processphotosynthesis
M0031676cellular_componentplasma membrane-derived thylakoid membrane
M0042651cellular_componentthylakoid membrane
Functional Information from PROSITE/UniProt
site_idPS00198
Number of Residues12
Details4FE4S_FER_1 4Fe-4S ferredoxin-type iron-sulfur binding region signature. CiGCTqCVrACP
ChainResidueDetails
CCYS11-PRO22
CCYS48-PRO59

site_idPS00419
Number of Residues10
DetailsPHOTOSYSTEM_I_PSAAB Photosystem I psaA and psaB proteins signature. CDGPGRGGTC
ChainResidueDetails
ACYS578-CYS587
BCYS566-CYS575

site_idPS00639
Number of Residues11
DetailsTHIOL_PROTEASE_HIS Eukaryotic thiol (cysteine) proteases histidine active site. LWHALRAMGFN
ChainResidueDetails
3LEU334-ASN344

site_idPS01026
Number of Residues18
DetailsPHOTOSYSTEM_I_PSAGK Photosystem I psaG and psaK proteins signature. GFgLpEllAtTSfGHlLA
ChainResidueDetails
KGLY53-ALA70

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1633
DetailsTransmembrane: {"description":"Helical","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues62
DetailsTransmembrane: {"description":"Helical; Name=I"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues504
DetailsTopological domain: {"description":"Lumenal, thylakoid","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues47
DetailsTransmembrane: {"description":"Helical; Name=II"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues314
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues46
DetailsTransmembrane: {"description":"Helical; Name=III"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues34
DetailsTransmembrane: {"description":"Helical; Name=IV"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues46
DetailsTransmembrane: {"description":"Helical; Name=V"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues62
DetailsTransmembrane: {"description":"Helical; Name=VI"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues60
DetailsTransmembrane: {"description":"Helical; Name=VII"}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues49
DetailsTransmembrane: {"description":"Helical; Name=VIII"}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues59
DetailsTransmembrane: {"description":"Helical; Name=IX"}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues42
DetailsTransmembrane: {"description":"Helical; Name=X"}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues57
DetailsTransmembrane: {"description":"Helical; Name=XI"}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"11418848","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues4
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"PubMed","id":"11418848","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"10066800","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"11418848","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues29
DetailsDomain: {"description":"4Fe-4S ferredoxin-type 1"}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues31
DetailsDomain: {"description":"4Fe-4S ferredoxin-type 2"}
ChainResidueDetails

site_idSWS_FT_FI20
Number of Residues26
DetailsRegion: {"description":"Disordered","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI21
Number of Residues14
DetailsCompositional bias: {"description":"Polar residues","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI22
Number of Residues19
DetailsTransmembrane: {"description":"Helical","evidences":[{"source":"HAMAP-Rule","id":"MF_00828","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

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PDB entries from 2026-07-22

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