3CI2: Chymotrypsin inhibitor 2

Refinement of the three-dimensional solution structure of barley serine proteinase inhibitor 2 and comparison with the structures in crystals. Determined by solution NMR. Released 31 Oct 1993.

Method
Solution NMR
Organism
Hordeum vulgare
Chains
1
Atoms
512
Mol. weight
7.55 kDa
Released
31 Oct 1993

Explore 3CI2 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

3CI2 contains 1 α-helix and 6 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 1 helix, 6 β-strands

ElementResiduesLengthSheet
β-strand2311
β-strand3112
α-helix32-4211
β-strand50-5233
β-strand68-7033
β-strand7512
β-strand8111

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Chymotrypsin inhibitor 2Aprotein66Hordeum vulgareP01053 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>3CI2_1 CHYMOTRYPSIN INHIBITOR 2 (chains A)
HNLKTEWPELVGKSVEEAKKVILQDKPEAQIIVLPVGTIVTMEYRIDRVRLFVDKLDNIA
QVPRVG

Primary citation

Refinement of the three-dimensional solution structure of barley serine proteinase inhibitor 2 and comparison with the structures in crystals. Ludvigsen, S., Shen, H.Y., Kjaer, M. et al. J Mol Biol (1991) 222:621-635. DOI 10.1016/0022-2836(91)90500-6 · PubMed

Other PDB entries of the same protein (UniProt P01053 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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