Structure of PDB 6tcl Chain C1 Binding Site BS01

Receptor Information

>6tcl Chain C1 (length=80) Species: 103690 (Nostoc sp. PCC 7120 = FACHB-418)

SHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCKAAQVASSPRTEDCVGC
KRCETACPTDFLSIRVYLGAETTRSMGLAY

Ligand information

• Ligand ID: SF4
• InChI: InChI=1S/4Fe.4S
• InChIKey: LJBDFODJNLIPKO-UHFFFAOYSA-N
• SMILES:
  OpenEye OEToolkits 2.0.7: [S]12[Fe]3[S]4[Fe]1[S]5[Fe]2[S]3[Fe]45
  CACTVS 3.385: S1[Fe]S[Fe]1.S2[Fe]S[Fe]2
• Formula: Fe4 S4
• Name: IRON/SULFUR CLUSTER
• PDB chain: 6tcl Chain C1 Residue 101

Receptor-Ligand Complex Structure

Structure summary

• PDB: 6tcl Distinct structural modulation of photosystem I and lipid environment stabilizes its tetrameric assembly.
• Resolution: 3.2 Å
• Binding residue (original residue number in PDB): C21 V25 C48 G50 C51 K52 R53 C54 V67
• Binding residue (residue number reindexed from 1): C20 V24 C47 G49 C50 K51 R52 C53 V66
• Annotation score: 1

Enzymatic activity

• Enzyme Commision number: 1.97.1.12: photosystem I.

Gene Ontology

Molecular Function

• GO:0009055 electron transfer activity
• GO:0016491 oxidoreductase activity
• GO:0046872 metal ion binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0009773 photosynthetic electron transport in photosystem I
• GO:0015979 photosynthesis

Cellular Component

• GO:0009522 photosystem I
• GO:0009579 thylakoid
• GO:0016020 membrane
• GO:0031676 plasma membrane-derived thylakoid membrane
• GO:0042651 thylakoid membrane

External links

• PDB: RCSB:6tcl, PDBe:6tcl, PDBj:6tcl
• PDBsum: 6tcl
• PubMed: 32170279
• UniProt: P0A410|PSAC_NOSS1 Photosystem I iron-sulfur center (Gene Name=psaC)