SAXSdb — 3d4e

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

putative beta-lactamase inhibitor protein

Streptococcus mutans

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	ACETATE ION × 1 1,2-ETHANEDIOL × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8DTX1_STRMU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–179； UniProt 29–206

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	3d4e
Deposition date deposition_date	2008-05-14
Structure title title	Crystal structure of putative beta-lactamase inhibitor protein (NP_721579.1) from STREPTOCOCCUS MUTANS at 1.40 A resolution
Keywords keywords	;NP_721579.1, putative beta-lactamase inhibitor protein, Structural Genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI-2, Unknown function, 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.

3d4e__assembly_1__model_1

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

Download this curve (.dat)

3d4e__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3d4e__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	17.52 Å
Rg (electron density)	16.46 Å
Total Rg	17.36 Å
Atom count	1266
Residues	160
Excluded volume	22297 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3d4e__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	putative beta-lactamase inhibitor protein
Molecular weight formula_weight	20155.0 kDa
Mutation mutation	V150I
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	1529

GEDKKGGTKPSNEAALTKTENLDFRLSFNKIKVTTDQNHFSGGTSIEQLKQWFGDPNKSEQRNAGNITLDSYTWVKDGAVINAQLYKNSTVARSISNFSFSREAKIGKEDYDELKIGESYKKIVEKLGEPDVLSQSMSSDKEEMQTVWSSGIKTKSSSATIELYFENGLLKNKTQKDLE

Source Source

Source organism organism	Streptococcus mutans
NCBI taxonomy ID ncbi_taxonomy_id	1309
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ACETATE ION
Molecular weight formula_weight	59.0 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	157

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	3d4eA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1450 — Beta-lactamase Inhibitory Protein; Chain:B, domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	3d4eA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1450 — Beta-lactamase Inhibitory Protein; Chain:B, domain 1
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	180.695 Å
Unit-cell length b length_b	28.373 Å
Unit-cell length c length_c	32.640 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.01 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.400 Å
Low-resolution limit resolution_low	32.634 Å
R factor r_factor	0.1760
R_work r_work	0.1750
R_free r_free	0.2010

Crystal structure of putative beta-lactamase inhibitor protein (NP_721579.1) from STREPTOCOCCUS MUTANS at 1.40 A resolution

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

putative beta-lactamase inhibitor protein

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

3d4e__assembly_1__model_1

3d4e__assembly_1__model_1 | I(q)

3d4e__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

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of putative beta-lactamase inhibitor protein (NP_721579.1) from STREPTOCOCCUS MUTANS at 1.40 A resolution

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

putative beta-lactamase inhibitor protein

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

3d4e__assembly_1__model_1

3d4e__assembly_1__model_1 | I(q)

3d4e__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

CATH v4.4 (2 domains)

7. Citations (1)