SAXSdb — 1fq4

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

SACCHAROPEPSIN

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Monomer	Protein 1 其他Polymer 1	;beta-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 ;N-[(2R)-1-{[(2S,3R,5R)-1-cyclohexyl-3-hydroxy-5-{[2-(morpholin-4-yl)ethyl]carbamoyl}oct-7-yn-2-yl]amino}-3-(methylsulfa nyl)-1-oxopropan-2-yl]-1H-benzimidazole-2-carboxamide ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 1	Consistent with protein count
2	Other combination	Homooligomer	Protein 2 其他Polymer 2	;beta-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ; × 2 ;N-[(2R)-1-{[(2S,3R,5R)-1-cyclohexyl-3-hydroxy-5-{[2-(morpholin-4-yl)ethyl]carbamoyl}oct-7-yn-2-yl]amino}-3-(methylsulfa nyl)-1-oxopropan-2-yl]-1H-benzimidazole-2-carboxamide ; × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CARP_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–329； UniProt 77–405

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1fq4
Deposition date deposition_date	2000-09-03
Structure title title	CRYSTAL STRUCTURE OF A COMPLEX BETWEEN HYDROXYETHYLENE INHIBITOR CP-108,420 AND YEAST ASPARTIC PROTEINASE A
Keywords keywords	Aspartic proteinase-inhibitor complex, extended beta-strand (inhibitor), HYDROLASE-HYDROLASE INHIBITOR complex; HYDROLASE/HYDROLASE INHIBITOR
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1fq4__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1fq4__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fq4__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	21.22 Å
Rg (electron density)	19.84 Å
Total Rg	20.80 Å
Atom count	2648
Residues	329
Excluded volume	47009 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fq4__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1fq4__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	SACCHAROPEPSIN
Molecular weight formula_weight	35774.6 kDa
EC 编号 ec_number	3.4.23.25
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2749

GGHDVPLTNYLNAQYYTDITLGTPPQNFKVILDTGSSNLWVPSNECGSLACFLHSKYDHEASSSYKANGTEFAIQYGTGSLEGYISQDTLSIGDLTIPKQDFAEATSEPGLTFAFGKFDGILGLGYDTISVDKVVPPFYNAIQQDLLDEKRFAFYLGDTSKDTENGGEATFGGIDESKFKGDITWLPVRRKAYWEVKFEGIGLGDEYAELESHGAAIDTGTSLITLPSGLAEMINAEIGAKKGWTGQYTLDCNTRDNLPDLIFNFNGYNFTIGPYDYTLEVSGSCISAITPMDFPEPVGPLAIVGDAFLRKYYSIYDIGNNAVGLAKAI

Entity 2 Entity 2 branched

Description description	;beta-D-glucopyranose-(1-2)-beta-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose ;
Molecular weight formula_weight	910.8 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	;N-[(2R)-1-{[(2S,3R,5R)-1-cyclohexyl-3-hydroxy-5-{[2-(morpholin-4-yl)ethyl]carbamoyl}oct-7-yn-2-yl]amino}-3-(methylsulfa nyl)-1-oxopropan-2-yl]-1H-benzimidazole-2-carboxamide ;
Molecular weight formula_weight	640.8 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	man
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	101

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1fq4a_
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.50.1.2 — Pepsin-like

CATH v4.4 (2 domains)

Domain ID domain_id	1fq4A01
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	1fq4A02
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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Unit-cell length a length_a	86.910 Å
Unit-cell length b length_b	86.910 Å
Unit-cell length c length_c	110.220 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 32 2 1
Space-group number int_tables_number	154
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	15.200 Å
R factor r_factor	0.1700
R_work r_work	—
R_free r_free	—

CRYSTAL STRUCTURE OF A COMPLEX BETWEEN HYDROXYETHYLENE INHIBITOR CP-108,420 AND YEAST ASPARTIC PROTEINASE A

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

SACCHAROPEPSIN

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1fq4__assembly_1__model_1

1fq4__assembly_1__model_1 | I(q)

1fq4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (2)

CRYSTAL STRUCTURE OF A COMPLEX BETWEEN HYDROXYETHYLENE INHIBITOR CP-108,420 AND YEAST ASPARTIC PROTEINASE A

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

SACCHAROPEPSIN

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

1fq4__assembly_1__model_1

1fq4__assembly_1__model_1 | I(q)

1fq4__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (2)