1H9I: Complex of eeti-II mutant with porcine trypsin

Complex of eeti-II mutant with porcine trypsin. Determined by X-ray diffraction at 1.9 Å resolution. Released 26 Jul 2004.

Method: X-ray diffraction
Resolution: 1.9 Å
Organisms: SUS SCROFA, ECBALLIUM ELATERIUM
Chains: 2
Atoms: 2,019
Mol. weight: 27.57 kDa
Ligands: CA
Released: 26 Jul 2004

Explore 1H9I in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1H9I contains 11 α-helices and 23 β-strands across 2 chains. 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 E: 9 helices, 18 β-strands

Element	Residues	Length	Sheet
β-strand	17	1	1
β-strand	20-21	2	2
α-helix	22-23	2
β-strand	30-34	5	3
β-strand	40-48	9	3
β-strand	51-54	4	3
α-helix	56-58	3
β-strand	64-67	4	3
β-strand	72	1	4
β-strand	81-90	10	3
β-strand	104-108	5	3
α-helix	111-114	4
β-strand	122	1	2
α-helix	123-124	2
α-helix	128-130	3
β-strand	135-140	6	2
β-strand	154	1	4
β-strand	156-162	7	2
α-helix	163-164	2
α-helix	165-171	7
β-strand	180-183	4	2
β-strand	189	1	1
β-strand	198-201	4	2
β-strand	204-216	9	2
β-strand	226-230	5	2
α-helix	231-233	3
α-helix	235-243	9

Chain I: 2 helices, 5 β-strands

Element	Residues	Length	Sheet
β-strand	2-3	2	2
β-strand	8	1	5
α-helix	12-14	3
α-helix	16	1
β-strand	20-21	2	6
β-strand	26	1	5
β-strand	27-28	2	6

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Trypsin	E	protein	223	SUS SCROFA	P00761 (AlphaFold model)
Trypsin inhibitor II	I	protein	36	ECBALLIUM ELATERIUM	P12071 (AlphaFold model)

Sequence of entity 1 (E), FASTA

>1H9I_1 TRYPSIN (chains E)
IVGGYTCAANSIPYQVSLNSGSHFCGGSLINSQWVVSAAHCYKSRIQVRLGEHNIDVLEG
NEQFINAAKIITHPNFNGNTLDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTECLISG
WGNTKSSGSSYPSLLQCLKAPVLSDSSCKSSYPGQITGNMICVGFLEGGKDSCQGDSGGP
VVCNGQLQGIVSWGYGCAQKNKPGVYTKVCNYVNWIQQTIAAN

Sequence of entity 2 (I), FASTA

>1H9I_2 TRYPSIN INHIBITOR II (chains I)
GCPRILIRCKQDSDCLAGCVCTNNKFCGSPHHHHHH

Ligands and cofactors

ID	Name	Formula	Copies
CA	Calcium ion	Ca	1

Primary citation

Structure of Ecballium Elaterium Trypsin Inhibitor II (Eeti-II): A Rigid Molecular Scaffold. Kraetzner, R., Debreczeni, J.E., Pape, T. et al. Acta Crystallogr D Biol Crystallogr (2005) 61:1255. DOI 10.1107/S0907444905021207 · PubMed

Other PDB entries of the same protein (UniProt P00761 (AlphaFold model), which also has an AlphaFold model), best resolution first:

9PDA 1.18 Å, Structure of Porcine Trypsin Crystals Grown From PEG and Complexed With Crystallization…
1S83 1.25 Å, Porcine trypsin complexed with 4-amino propanol
2A31 1.25 Å, Trypsin in complex with borate
9PDC 1.27 Å, Porcine Trypsin grown from PEG and Complexed with Crystallization Additives II
9PD9 1.28 Å, The Structure of Porcine Trypsin in Complex with Crystallization Additives I
1S5S 1.4 Å, Porcine trypsin complexed with guanidine-3-propanol inhibitor
9PCT 1.41 Å, Structure of Porcine Trypsin Crystals Grown from PEG Complexed with Crystallization…
1S6H 1.45 Å, Porcine trypsin complexed with guanidine-3-propanol inhibitor
1H9H 1.5 Å, Complex of eeti-II with porcine trypsin
2A32 1.5 Å, Trypsin in complex with benzene boronic acid
1FNI 1.6 Å, Crystal structure of porcine beta trypsin with 0.01% polydocanol
1MCT 1.6 Å, The refined 1.6 Å resolution crystal structure of the complex formed between porcine…

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