SAXSdb — 1w7f

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

BETA-LACTAMASE

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	ISOCITRIC ACID × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	P94458
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 43–74； UniProt 1–32 Author chain A； PDBConstruct 75–99； UniProt 33–57 Author chain A； PDBConstruct 100–252； UniProt 58–210 Author chain A； PDBConstruct 253–265； UniProt 211–223 Author chain A； PDBConstruct 266–307； UniProt 224–265 Author chain B； PDBConstruct 43–74； UniProt 1–32 Author chain B； PDBConstruct 75–99； UniProt 33–57 Author chain B； PDBConstruct 100–252； UniProt 58–210 Author chain B； PDBConstruct 253–265； UniProt 211–223 Author chain B； PDBConstruct 266–307； UniProt 224–265

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	1w7f
Deposition date deposition_date	2004-09-01
Structure title title	Crystal structure of the class A beta-lactamase BS3 inhibited with isocitrate
Keywords keywords	HYDROLASE, BETA-LACTAMASE, ISOCITRATE, BACILLUS LICHENIFORMIS 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.

1w7f__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1w7f__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1w7f__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	18.72 Å
Rg (electron density)	17.54 Å
Total Rg	18.52 Å
Atom count	1995
Residues	256
Excluded volume	35469 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1w7f__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1w7f__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 (3)

Entity 1 Entity 1 polymer

Description description	BETA-LACTAMASE
Molecular weight formula_weight	34011.6 kDa
EC 编号 ec_number	3.5.2.6
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	4215

MKLWFSTLKLKKAAAVLLFSCVALAGCANNQTNASQPAEKNEKTEMKDDFAKLEEQFDAKLGIFALDTGTNRTVTYRPDERFAFASTIKALTVGVLLQQKSIEDLNQRITYTRDDLVNYNPITEKHVDTGMTLKELADASLRYSDNTAQNLILKQIGGPESLKKELRKIGDEVTNPERFEPELNEVNPGETQDTSTARALATSLQAFALEDKLPSEKRELLIDWMKRNTTGDALIRAGVPEGWEVADKTGAGSYGTRNDIAIIWPPKGDPVVLAVLSSRDKKDAKYDDKLIAEATKVVVKALNMNGK

Entity 2 Entity 2 non-polymer

Description description	ISOCITRIC ACID
Molecular weight formula_weight	192.1 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	212

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1w7fa_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.3 — beta-lactamase/transpeptidase-like
Superfamily Superfamily superfamily	e.3.1 — beta-lactamase/transpeptidase-like
Family Family family	e.3.1.0 — automated matches

Domain ID domain_id	d1w7fb_
Class class	e — Multi-domain proteins (alpha and beta)
Fold Fold fold	e.3 — beta-lactamase/transpeptidase-like
Superfamily Superfamily superfamily	e.3.1 — beta-lactamase/transpeptidase-like
Family Family family	e.3.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id	1w7fA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	710 — Beta-lactamase
Homologous superfamily homologous superfamily	10 — DD-peptidase/beta-lactamase superfamily

Domain ID domain_id	1w7fB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	710 — Beta-lactamase
Homologous superfamily homologous superfamily	10 — DD-peptidase/beta-lactamase superfamily

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Unit-cell length a length_a	46.896 Å
Unit-cell length b length_b	104.655 Å
Unit-cell length c length_c	63.766 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	94.33 °
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	19.880 Å
R factor r_factor	0.2080
R_work r_work	0.2080
R_free r_free	0.2530

Crystal structure of the class A beta-lactamase BS3 inhibited with isocitrate

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

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

1w7f__assembly_2__model_1

1w7f__assembly_2__model_1 | I(q)

1w7f__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)

Crystal structure of the class A beta-lactamase BS3 inhibited with isocitrate

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

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

1w7f__assembly_2__model_1

1w7f__assembly_2__model_1 | I(q)

1w7f__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (2)