1KIO: Small serine protease inhibitor SGCI[L30R, K31M]

Solution structure of the small serine protease inhibitor SGCI[L30R, K31M]. Determined by solution NMR. Released 12 Dec 2001.

Method: Solution NMR
Chains: 1
Atoms: 251
Mol. weight: 3.71 kDa
Released: 12 Dec 2001

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

Secondary structure: helices and β-sheets

1KIO contains 1 α-helix and 5 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, 5 β-strands

Element	Residues	Length	Sheet
α-helix	5	1
β-strand	8-9	2	1
β-strand	12	1	2
β-strand	15	1	2
β-strand	18-19	2	1
β-strand	26	1	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Serine protease inhibitor I	A	protein	35		O46162 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1KIO_1 SERINE PROTEASE INHIBITOR I (chains A)
EVTCEPGTTFKDKCNTCRCGSDGKSAACTRMACPQ

Primary citation

Comparative structure analysis of proteinase inhibitors from the desert locust, Schistocerca gregaria. Gaspari, Z., Patthy, A., Graf, L. et al. Eur J Biochem (2002) 269:527-537. DOI 10.1046/j.0014-2956.2001.02685.x · PubMed

Other PDB entries of the same protein (UniProt O46162 (AlphaFold model), which also has an AlphaFold model), best resolution first:

2XTT 0.93 Å, Bovine trypsin in complex with evolutionary enhanced Schistocerca gregaria protease…
2F91 1.2 Å, 1.2A resolution structure of a crayfish trypsin complexed with a peptide inhibitor, SGTI
3TVJ 1.28 Å, Catalytic fragment of MASP-2 in complex with its specific inhibitor developed by…
4DJZ 3.2 Å, Catalytic fragment of masp-1 in complex with its specific inhibitor developed by…
1KGM Solution structure of the small serine protease inhibitor sgci
1KJ0 Solution structure of the small serine protease inhibitor sgti

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