SAXSdb — 3ahn

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

Oligopeptidase

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	N~2~-{(2S)-3-[(R)-hydroxy{(1R)-2-phenyl-1-[(phenylacetyl)amino]ethyl}phosphoryl]-2-methylpropanoyl}-L-lysyl-D-serine × 1 ZINC ION × 1 ACETATE ION × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	N~2~-{(2S)-3-[(R)-hydroxy{(1R)-2-phenyl-1-[(phenylacetyl)amino]ethyl}phosphoryl]-2-methylpropanoyl}-L-lysyl-D-serine × 1 ZINC ION × 1 ACETATE ION × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q4W803_9BACI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–564； UniProt 1–564 Author chain B； PDBConstruct 1–564； UniProt 1–564

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	3ahn
Deposition date deposition_date	2010-04-25
Structure title title	PZ PEPTIDASE A with Inhibitor 1
Keywords keywords	HYDROLASE, 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.

3ahn__assembly_1__model_1

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

Download this curve (.dat)

3ahn__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3ahn__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.64 Å
Rg (electron density)	23.42 Å
Total Rg	24.34 Å
Atom count	4747
Residues	564
Excluded volume	84098 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3ahn__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3ahn__assembly_2__model_1`	monomeric （1）	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	Oligopeptidase
Molecular weight formula_weight	66486.6 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	10904

MKFSEFRYERPNIEKLKASFQQALQSFQKASNAEEQNEAMKEINQLRNDFSTMAQICYIRHTIDTNDEFYKQEQDFFDEVEPIVKGLVNDYYRALVSSPFRSQLEGKWGKQLFALAEAELKTYSPDIVEDLQLENKLTSEYTKLVASAKIFFEGEERTLAQLQPFVESPDRDMRKRASEARFTFFQEHEEKFDEIYDQLVKVRTAIAQKLGFKNFVELGYARLGRTDYNAEMVAKFRKQVEKHIVPIAVKLRERQRERIGVEKLKYYDEAFVFPTGNPMPKGDANWIIENGKKMYEELSPETGEFFRYMIEHELMDLVAKKGKASGGYCTYIENYKAPFIFSNFTGTSGDIDVLTHEAGHAFQVYESRHYEIPEYNWPTLEACEIHSMSMEFFTWPWMKLFFKEDAEKYQFYHLSDALLFLPYGVAVDEFQHFVYENPNATPAERKQAWRAIERKYMPTKDYDGNDYLERGGFWQRQSHIYTTAFYYIDYTLAQICAFQFWKRSRENYKEAWNDYLTLCRQGGSKPFTELVRVANLISPFEDGCVQSVVGGIEGWLNSVDDQSL

Entity 2 Entity 2 non-polymer

Description description	N~2~-{(2S)-3-[(R)-hydroxy{(1R)-2-phenyl-1-[(phenylacetyl)amino]ethyl}phosphoryl]-2-methylpropanoyl}-L-lysyl-D-serine
Molecular weight formula_weight	604.6 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	ACETATE ION
Molecular weight formula_weight	59.0 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1414

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3ahnA00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1370 — Neurolysin; domain 3
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	3ahnB00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1370 — Neurolysin; domain 3
Homologous superfamily homologous superfamily	30 —

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Unit-cell length a length_a	56.379 Å
Unit-cell length b length_b	194.148 Å
Unit-cell length c length_c	59.924 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	106.22 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.800 Å
Low-resolution limit resolution_low	19.970 Å
R factor r_factor	0.1889
R_work r_work	0.1883
R_free r_free	0.2004

PZ PEPTIDASE A with Inhibitor 1

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

Oligopeptidase

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

3ahn__assembly_1__model_1

3ahn__assembly_1__model_1 | I(q)

3ahn__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 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)

PZ PEPTIDASE A with Inhibitor 1

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

Oligopeptidase

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

3ahn__assembly_1__model_1

3ahn__assembly_1__model_1 | I(q)

3ahn__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 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)