1IDA: HIV-2 protease

Crystal structures of HIV-2 protease in complex with inhibitors containing the hydroxyethylamine dipeptide isostere. Determined by X-ray diffraction at 1.7 Å resolution. Released 26 Jan 1995.

Method: X-ray diffraction
Resolution: 1.7 Å
Organism: Human immunodeficiency virus type 2
Chains: 2
Atoms: 1,675
Mol. weight: 22.18 kDa
Ligands: 0PO
Released: 26 Jan 1995

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

Secondary structure: helices and β-sheets

1IDA contains 2 α-helices and 18 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 A: 1 helix, 9 β-strands

Element	Residues	Length	Sheet
β-strand	2-4	3	1
β-strand	10-15	6	2
β-strand	18-24	7	2
β-strand	32-33	2	2
β-strand	43-48	6	2
β-strand	53-66	14	2
β-strand	69-77	9	2
β-strand	84-85	2	2
α-helix	87-93	7
β-strand	96-98	3	1

Chain B: 1 helix, 9 β-strands

Element	Residues	Length	Sheet
β-strand	2-3	2	1
β-strand	10-15	6	3
β-strand	18-24	7	3
β-strand	32-33	2	3
β-strand	43-49	7	3
β-strand	52-66	15	3
β-strand	69-78	10	3
β-strand	84-85	2	3
α-helix	87-93	7
β-strand	96-98	3	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Protease	A, B	protein	99	Human immunodeficiency virus type 2	P04584

Sequence of entity 1 (A, B), FASTA

>1IDA_1 Protease (chains A, B)
PQFSLWKRPVVTAYIEGQPVEVLLDTGADDSIVAGIELGNNYSPKIVGGIGGFINTKEYK
NVEIEVLNKKVRATIMTGDTPINIFGRNILTALGMSLNL

Ligands and cofactors

ID	Name	Formula	Copies
0PO	N-[(1R)-1-{[(1S,2S)-1-benzyl-3-{(2R,4S)-2-(tert-butylcarbamoyl)-4-[(pyridin-3-y…	C41 H52 N6 O4 S	1

Primary citation

Crystal structures of HIV-2 protease in complex with inhibitors containing the hydroxyethylamine dipeptide isostere. Tong, L., Pav, S., Mui, S. et al. Structure (1995) 3:33-40. DOI 10.1016/S0969-2126(01)00133-2 · PubMed

Other PDB entries of the same protein (UniProt P04584), best resolution first:

3EC0 1.18 Å, High Resolution HIV-2 Protease Structure in Complex with Antiviral Inhibitor GRL-06579A
3ECG 1.18 Å, High Resolution HIV-2 Protease Structure in Complex with Antiviral Inhibitor GRL-98065
3EBZ 1.2 Å, High Resolution HIV-2 Protease Structure in Complex with Clinical Drug Darunavir
1HSH 1.9 Å, Crystal structure at 1.9 Å resolution of human immunodeficiency virus (HIV) II protease…
4UPJ 1.9 Å, Human immunodeficiency virus type 2 protease mutant with lys 57 replaced by leu (K57L)…
2HPE 2.0 Å, Comparison of the structures of HIV-2 protease complexes in three crystal space groups…
1IDB 2.2 Å, Crystal structures of HIV-2 protease in complex with inhibitors containing the…
2MIP 2.2 Å, Crystal structure of human immunodeficiency virus (HIV) type 2 protease in complex with…
1HII 2.3 Å, Comparative analysis of the X-ray structures of HIV-1 and HIV-2 proteases in complex…
5UPJ 2.3 Å, HIV-2 PROTEASE/U99283 complex
6UPJ 2.34 Å, HIV-2 PROTEASE/U99294 complex
1MU2 2.35 Å, Crystal structure of HIV-2 reverse transcriptase

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