1HA9: Trypsin inhibitor II

Solution structure of the squash trypsin inhibitor mcoti-II, NMR, 30 structures. Determined by solution NMR. Released 12 Apr 2001.

Method
Solution NMR
Organism
MOMORDICA COCHINCHINENSIS
Chains
1
Atoms
236
Mol. weight
3.48 kDa
Released
12 Apr 2001

Explore 1HA9 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1HA9 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-strand311
β-strand611
β-strand1412
α-helix18-203
β-strand2713
β-strand3212
β-strand3313

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Trypsin inhibitor IIAprotein34MOMORDICA COCHINCHINENSISP82409 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1HA9_1 TRYPSIN INHIBITOR II (chains A)
SGSDGGVCPKILKKCRRDSDCPGACICRGNGYCG

Primary citation

Solution Structure of the Squash Trypsin Inhibitor Mcoti-II. A New Family for Cyclic Knottins. Heitz, A., Hernandez, J.-F., Gagnon, J. et al. Biochemistry (2001) 40:7973. DOI 10.1021/BI0106639 · PubMed

Other PDB entries of the same protein (UniProt P82409 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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