1c70

ALTERNATE BINDING SITE FOR THE P1-P3 GROUP OF A CLASS OF POTENT HIV-1 PROTEASE INHIBITORS AS A RESULT OF CONCERTED STRUCTURAL CHANGE IN 80'S LOOP.

Method: X-RAY DIFFRACTION D_max: 63.0 Å Quality: GOOD

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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (PROTEASE)

Human immunodeficiency virus 1

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain A； UniProt 1–99 Chain B； UniProt 1–99	Not recorded	L75 N-[2(R)-HYDROXY-1(S)-INDANYL]-2(R)-PHENYLMETHYL-4(S)-HYDROXY-5-[4-[2-BENZOFURANYLMETHYL]-2(S)-[TERT-BUTYLAMINOCARBONYL]-PIPERAZINYL]-PENTANEAMIDE × 1	X-RAY DIFFRACTION mmCIF provides none of the parsed experimental conditions	Resolution 2.50 Å R-free 0.270

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

No other PDB entry for the same UniProt protein was found.

View Construct and Data Evidence

UniProt name	O92103_9HIV1
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–99； UniProt 1–99 Author chain B； PDBConstruct 1–99； UniProt 1–99

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

Download Download SAXS (.dat) P(r) (.pr.out) CIF

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1c70
Deposition date deposition_date	1999-12-29
Structure title title	ALTERNATE BINDING SITE FOR THE P1-P3 GROUP OF A CLASS OF POTENT HIV-1 PROTEASE INHIBITORS AS A RESULT OF CONCERTED STRUCTURAL CHANGE IN 80'S LOOP.
Keywords keywords	hydrolase; HYDROLASE
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	18.27 Å
Radius of gyration Rg (electron density) rg_electron	17.27 Å
Forward intensity I(0) i0	7839000.00
Molecular weight molecular_weight	22209.0 kDa
Excluded volume excluded_volume	28587 Å³
Envelope volume envelope_volume	31975 Å³
Hydration-shell volume shell_volume	15850 Å³
Envelope diameter envelope_diameter	62.8 Å
Shell Rg shell_rg	23.04 Å
Envelope Rg envelope_rg	17.62 Å
Shape Rg shape_rg	17.26 Å
Total Rg total_rg	18.30 Å
Total atoms total_atoms	1562
Residues n_residues	198
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	63.0 Å
Rg (real space) rg_real	18.24 Å
Rg uncertainty (real space) rg_real_error	0.38 Å
I(0) (real space) i0_real	7.8390e+06
I(0) uncertainty (real space) i0_real_error	9.8440e+04
Rg (reciprocal space) rg_reciprocal	18.25 Å
I(0) (reciprocal space) i0_reciprocal	7839000.0000
Solution quality estimate total_estimate	0.8616
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	20.4 Å
Skewness Skewness skewness	0.348
Kurtosis Kurtosis kurtosis	-0.241
Angular range angular_range	— – 0.4350 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3080000.0000
Real-space data points n_real_points	75
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.738; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.994

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	PROTEIN (PROTEASE)
Molecular weight formula_weight	10803.8 kDa
EC 编号 ec_number	3.4.23.-
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	1668

PQITLWQRPLVTIKIGGQLKEALLDTGADDTVLEEMSLPGRWKPKMIGGIGGFIKVRQYDQILIEICGHKAIGTVLVGPTPVNIIGRNLLTQIGCTLNF

来源 Source

来源生物 organism	Human immunodeficiency virus 1
NCBI Class编号 ncbi_taxonomy_id	11676
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	;N-[2(R)-HYDROXY-1(S)-INDANYL]-2(R)-PHENYLMETHYL-4(S)-HYDROXY-5-[4-[2-BENZOFURANYLMETHYL]-2(S)-[TERT-BUTYLAMINOCARBONYL]-PIPERAZINYL]-PENTANEAMIDE ;
Molecular weight formula_weight	652.8 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	106

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1c70a_
Class class	b — All beta proteins
Fold Fold fold	b.50 — Acid proteases
Superfamily Superfamily superfamily	b.50.1 — Acid proteases
Family Family family	b.50.1.1 — Retroviral protease (retropepsin)

Domain ID domain_id	d1c70b_
Class class	b — All beta proteins
Fold Fold fold	b.50 — Acid proteases
Superfamily Superfamily superfamily	b.50.1 — Acid proteases
Family Family family	b.50.1.1 — Retroviral protease (retropepsin)

CATH v4.4 (2 domains)

Domain ID domain_id	1c70A00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acid Proteases

Domain ID domain_id	1c70B00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acid Proteases

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8. Citations (1)

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Unit-cell length a length_a	59.860 Å
Unit-cell length b length_b	87.120 Å
Unit-cell length c length_c	46.970 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.1600
R_work r_work	0.1600
R_free r_free	0.2700

fit	/app/data/saxs_computation/c7/1c70/1c70.fit
pddf	/app/data/pr_computation/c7/1c70/1c70.pr.out
profile	/app/data/saxs_computation/c7/1c70/1c70.dat