SAXSdb — 3e2l

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

Carbapenemase

Klebsiella pneumoniae

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Beta-lactamase inhibitory protein × 1 （P35804） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Beta-lactamase inhibitory protein × 1 （P35804） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q93LQ9_KLEPN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–264； UniProt 30–293 Author chain B； PDBConstruct 1–264； UniProt 30–293

Beta-lactamase inhibitory protein

Streptomyces clavuligerus

UniProt P35804

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Carbapenemase × 1 （Q93LQ9） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	Carbapenemase × 1 （Q93LQ9） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BLIP_STRCL
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain C； PDBConstruct 1–165； UniProt 37–201 Author chain D； PDBConstruct 1–165； UniProt 37–201

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	3e2l
Deposition date deposition_date	2008-08-05
Structure title title	Crystal Structure of the KPC-2 Beta-lactamase/Beta-lactamase inhibitor protein (BLIP)
Keywords keywords	;Beta-lactamase, Beta-lactamase inhibitor protein, protein-protein complex, BLIP, KPC-2, Antibiotic resistance, Hydrolase, Plasmid, Secreted, 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.

3e2l__assembly_1__model_1

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

Download this curve (.dat)

3e2l__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3e2l__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	22.36 Å
Rg (electron density)	21.50 Å
Total Rg	22.42 Å
Atom count	3183
Residues	424
Excluded volume	56271 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3e2l__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3e2l__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 (3)

Entity 1 Entity 1 polymer

Description description	Carbapenemase
Molecular weight formula_weight	28054.3 kDa
EC 编号 ec_number	3.5.2.6
Mutation mutation	G175S
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	7009

AEPFAKLEQDFGGSIGVYAMDTGSGATVSYRAEERFPLCXSFKGFLAAAVLARSQQQAGLLDTPIRYGKNALVPWSPISEKYLTTGMTVAELSAAAVQYSDNAAANLLLKELGGPAGLTAFMRSIGDTTFRLDRWELELNSAIPSDARDTSSPRAVTESLQKLTLGSALAAPQRQQFVDWLKGNTTGNHRIRAAVPADWAVGDKTGTCGVYGTANDYAVVWPTGRAPIVLAVYTRAPNKDDKHSEAVIAAAARLALEGLGVNGQ

Source Source

Source organism organism	Klebsiella pneumoniae
NCBI taxonomy ID ncbi_taxonomy_id	573
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Beta-lactamase inhibitory protein
Molecular weight formula_weight	17556.5 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D

AGVMTGAKFTQIQFGMTRQQVLDIAGAENCETGGSFGDSIHCRGHAAGDYYAYATFGFTSAAADAKVDSKSQEKLLAPSAPTLTLAKFNQVTVGMTRAQVLATVGQGSCTTWSEYYPAYPSTAGVTLSLSCFDVDGYSSTGFYRGSAHLWFTDGVLQGKRQWDLV

Source Source

Source organism organism	Streptomyces clavuligerus
NCBI taxonomy ID ncbi_taxonomy_id	1901
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	702

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3e2lc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.98 — BLIP-like
Superfamily Superfamily superfamily	d.98.1 — beta-lactamase-inhibitor protein, BLIP
Family Family family	d.98.1.1 — beta-lactamase-inhibitor protein, BLIP

Domain ID domain_id	d3e2ld_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.98 — BLIP-like
Superfamily Superfamily superfamily	d.98.1 — beta-lactamase-inhibitor protein, BLIP
Family Family family	d.98.1.1 — beta-lactamase-inhibitor protein, BLIP

CATH v4.4 (6 domains)

Domain ID domain_id	3e2lA00
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	3e2lB00
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	3e2lC01
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	3e2lC02
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	3e2lD01
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	3e2lD02
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	162.243 Å
Unit-cell length b length_b	66.391 Å
Unit-cell length c length_c	82.205 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	101.28 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

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

Resolution resolution	1.870 Å
Low-resolution limit resolution_low	51.786 Å
R factor r_factor	0.1711
R_work r_work	0.1688
R_free r_free	0.2128

Crystal Structure of the KPC-2 Beta-lactamase/Beta-lactamase inhibitor protein (BLIP)

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

Carbapenemase

State in the Current Structure

Other States of the Same Protein in the Database

Beta-lactamase inhibitory 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

3e2l__assembly_1__model_1

3e2l__assembly_1__model_1 | I(q)

3e2l__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal Structure of the KPC-2 Beta-lactamase/Beta-lactamase inhibitor protein (BLIP)

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

Carbapenemase

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Beta-lactamase inhibitory 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

3e2l__assembly_1__model_1

3e2l__assembly_1__model_1 | I(q)

3e2l__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (2 domains)

CATH v4.4 (6 domains)

7. Citations (1)