› 2ci2

X-ray diffraction
2Å resolution

CRYSTAL AND MOLECULAR STRUCTURE OF THE SERINE PROTEINASE INHIBITOR CI-2 FROM BARLEY SEEDS

Released:
DOI: 10.2210/pdb2ci2/pdb
PDB entry 2ci2 coloured by chain, front view.
PDB entry 2ci2 coloured by chain, side view.
PDB entry 2ci2 coloured by chain, top view.
Source organism: Hordeum vulgare
Primary publication:
Crystal and molecular structure of the serine proteinase inhibitor CI-2 from barley seeds.
McPhalen CA, James MN
Biochemistry 26 261-9 (1987)
PMID: 3828302

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
homo hexamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-133918 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Subtilisin-chymotrypsin inhibitor-2A Chain: I
Molecule details ›
Chain: I
Length: 83 amino acids
Theoretical weight: 9.26 KDa
Source organism: Hordeum vulgare
Expression system: Not provided
UniProt:
  • Canonical: P01053 (Residues: 2-84; Coverage: 99%)
Sequence domains: Potato inhibitor I family
Structure domains: Trypsin Inhibitor V, subunit A

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P622
Unit cell:
a: 69.015Å b: 69.015Å c: 52.89Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.198 not available not available
Expression system: Not provided

Quick links

Citations

9 review citations

Natural protein proteinase inhibitors and their interaction with proteinases.
Bode et al. (1992)
8 more

115 mentions without citation

Native protein sequences are close to optimal for their structures.
Kuhlman et al. (2000)
114 more