SAXSdb — 1ddk

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

IMP-1 METALLO BETA-LACTAMASE

Pseudomonas aeruginosa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	ZINC ION × 2 ACETIC ACID × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q932P5_9GAMM
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–220； UniProt 20–239

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	1ddk
Deposition date deposition_date	1999-11-10
Structure title title	CRYSTAL STRUCTURE OF IMP-1 METALLO BETA-LACTAMASE FROM PSEUDOMONAS AERUGINOSA
Keywords keywords	IMP-1 METALLO BETA-LACTAMASE, BINUCLEAR METAL CENTER, ZN BETA-LACTAMASE, HYDROLASE; HYDROLASE
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.

1ddk__assembly_1__model_1

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

Download this curve (.dat)

1ddk__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1ddk__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	17.67 Å
Rg (electron density)	16.53 Å
Total Rg	17.69 Å
Atom count	1728
Residues	220
Excluded volume	31090 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1ddk__assembly_1__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 (4)

Entity 1 Entity 1 polymer

Description description	IMP-1 METALLO BETA-LACTAMASE
Molecular weight formula_weight	24334.8 kDa
EC 编号 ec_number	3.5.2.6
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1729

ESLPDLKIEKLDEGVYVHTSFEEVNGWGVVPKHGLVVLVNAEAYLIDTPFTAKDTEKLVTWFVERGYKIKGSISSHFHSDSTGGIEWLNSRSIPTYASELTNELLKKDGKVQATNSFSGVNYWLVKNKIEVFYPGPGHTPDNVVVWLPERKILFGGCFIKPYGLGNLGDANIEAWPKSAKLLKSKYGKAKLVVPSHSEVGDASLLKLTLEQAVKGLNESK

Source Source

Source organism organism	Pseudomonas aeruginosa
NCBI taxonomy ID ncbi_taxonomy_id	287
Host organism host_organism	Escherichia coli BL21

Entity 2 Entity 2 non-polymer

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

Entity 3 Entity 3 non-polymer

Description description	ACETIC ACID
Molecular weight formula_weight	60.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1ddka_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.157 — Metallo-hydrolase/oxidoreductase
Superfamily Superfamily superfamily	d.157.1 — Metallo-hydrolase/oxidoreductase
Family Family family	d.157.1.1 — Zn metallo-beta-lactamase

CATH v4.4 (1 domains)

Domain ID domain_id	1ddkA00
Class class	3 — Alpha Beta
Architecture architecture	60 — 4-Layer Sandwich
Topology topology	15 — Metallo-beta-lactamase; Chain A
Homologous superfamily homologous superfamily	10 — Ribonuclease Z/Hydroxyacylglutathione hydrolase-like

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Unit-cell length a length_a	50.300 Å
Unit-cell length b length_b	105.800 Å
Unit-cell length c length_c	112.300 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	93.90 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

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

Resolution resolution	3.100 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2550
R_work r_work	0.2550
R_free r_free	0.2880

CRYSTAL STRUCTURE OF IMP-1 METALLO BETA-LACTAMASE FROM PSEUDOMONAS AERUGINOSA

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

IMP-1 METALLO BETA-LACTAMASE

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

1ddk__assembly_1__model_1

1ddk__assembly_1__model_1 | I(q)

1ddk__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF IMP-1 METALLO BETA-LACTAMASE FROM PSEUDOMONAS AERUGINOSA

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

IMP-1 METALLO BETA-LACTAMASE

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

1ddk__assembly_1__model_1

1ddk__assembly_1__model_1 | I(q)

1ddk__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)