1fcf

X-ray diffraction
2.1Å resolution

PHOTOSYSTEM II D1 C-TERMINAL PROCESSING PROTEASE

Released:
Source organism: Tetradesmus obliquus

Function and Biology Details

Reaction catalysed:
The enzyme shows specific recognition of a C-terminal tripeptide, Xaa-Yaa-Zaa, in which Xaa is preferably Ala or Leu, Yaa is preferably Ala or Tyr, and Zaa is preferably Ala, but then cleaves at a variable distance from the C-terminus. A typical cleavage is -Ala-Ala-|-Arg-Ala-Ala-Lys-Glu-Asn-Tyr-Ala-Leu-Ala-Ala.
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo trimer
PDBe Complex ID:
PDB-CPX-126431 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
C-terminal processing peptidase, chloroplastic Chain: A
Molecule details ›
Chain: A
Length: 388 amino acids
Theoretical weight: 40.71 KDa
Source organism: Tetradesmus obliquus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: O04073 (Residues: 78-464; Coverage: 83%)
Gene names: D1P, ctpA
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 5ID-B
Spacegroup: R32
Unit cell:
a: 148.753Å b: 148.753Å c: 100.173Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.22 0.22 0.318
Expression system: Escherichia coli BL21(DE3)