Structure of PDB 3pcq Chain C

Receptor sequence

>3pcqC (length=80) Species: 197221 (Thermosynechococcus vestitus BP-1)

AHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCKAGQIASSPRTEDCVGC
KRCETACPTDFLSIRVYLGAETTRSMGLAY

3D structure

• PDB: 3pcq Femtosecond X-ray protein nanocrystallography.
• Chain: C
• Resolution: 8.984 Å

Enzymatic activity

• Enzyme Commision number: 1.97.1.12: photosystem I.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	SF4	C	C20 P21 V24 L25 C47 V48 G49 C50 K51 C53 V66	C20 P21 V24 L25 C47 V48 G49 C50 K51 C53 V66
BS02	SF4	C	C10 I11 G12 C13 T14 C16 A39 C57 P58 S63 I64	C10 I11 G12 C13 T14 C16 A39 C57 P58 S63 I64

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:3pcq, PDBe:3pcq, PDBj:3pcq
• PDBsum: 3pcq
• PubMed: 21293373
• UniProt: P0A415|PSAC_THEVB Photosystem I iron-sulfur center (Gene Name=psaC)