6ppe

ClpP and ClpX IGF loop in ClpX-ClpP complex with D7 symmetry

Method: ELECTRON MICROSCOPY

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

ATP-dependent Clp protease proteolytic subunit

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	ATP-dependent Clp protease ATP-binding subunit ClpX × 14 （A0A1Q9L861） water × 14	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A0K4NM46_ECOLX
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–192； UniProt 16–207 Author chain B； PDBConstruct 1–192； UniProt 16–207 Author chain C； PDBConstruct 1–192； UniProt 16–207 Author chain D； PDBConstruct 1–192； UniProt 16–207 Author chain E； PDBConstruct 1–192； UniProt 16–207 Author chain F； PDBConstruct 1–192； UniProt 16–207 Author chain G； PDBConstruct 1–192； UniProt 16–207 Author chain H； PDBConstruct 1–192； UniProt 16–207 Author chain I； PDBConstruct 1–192； UniProt 16–207 Author chain J； PDBConstruct 1–192； UniProt 16–207 Author chain K； PDBConstruct 1–192； UniProt 16–207 Author chain L； PDBConstruct 1–192； UniProt 16–207 Author chain M； PDBConstruct 1–192； UniProt 16–207 Author chain N； PDBConstruct 1–192； UniProt 16–207

ATP-dependent Clp protease ATP-binding subunit ClpX

Escherichia coli

UniProt A0A1Q9L861

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	ATP-dependent Clp protease proteolytic subunit × 14 （A0A0K4NM46） water × 14	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A1Q9L861_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain 1； PDBConstruct 1–363； UniProt 62–424 Author chain 2； PDBConstruct 1–363； UniProt 62–424 Author chain 3； PDBConstruct 1–363； UniProt 62–424 Author chain O； PDBConstruct 1–363； UniProt 62–424 Author chain P； PDBConstruct 1–363； UniProt 62–424 Author chain Q； PDBConstruct 1–363； UniProt 62–424 Author chain R； PDBConstruct 1–363； UniProt 62–424 Author chain S； PDBConstruct 1–363； UniProt 62–424 Author chain T； PDBConstruct 1–363； UniProt 62–424 Author chain U； PDBConstruct 1–363； UniProt 62–424 Author chain V； PDBConstruct 1–363； UniProt 62–424 Author chain X； PDBConstruct 1–363； UniProt 62–424 Author chain Y； PDBConstruct 1–363； UniProt 62–424 Author chain Z； PDBConstruct 1–363； UniProt 62–424

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	6ppe
Deposition date deposition_date	2019-07-06
Structure title title	ClpP and ClpX IGF loop in ClpX-ClpP complex with D7 symmetry
Keywords keywords	Protein degradation, AAA+ protease complex, CHAPERONE; CHAPERONE
Experimental Method method	ELECTRON MICROSCOPY

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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.

6ppe__assembly_1__model_1

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

Download this curve (.dat)

6ppe__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6ppe__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	44.80 Å
Rg (electron density)	43.65 Å
Total Rg	43.99 Å
Atom count	43722
Residues	2814
Excluded volume	390150 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6ppe__assembly_1__model_1`	28-meric （28）	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	ATP-dependent Clp protease proteolytic subunit
Molecular weight formula_weight	21515.8 kDa
EC 编号 ec_number	3.4.21.92
Source method src_method	man
Copy count entity_count	14

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H,I,J,K,L,M,N
Atom count atom_count	43736

LVPMVIEQTSRGERSFDIYSRLLKERVIFLTGQVEDHMANLIVAQMLFLEAENPEKDIYLYINSPGGVITAGMSIYDTMQFIKPDVSTICMGQAASMGAFLLTAGAKGKRFCLPNSRVMIHQPLGGYQGQATDIEIHAREILKVKGRMNELMALHTGQSLEQIERDTERDRFLSAPEAVEYGLVDSILTHRN

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	ATP-dependent Clp protease ATP-binding subunit ClpX
Molecular weight formula_weight	39835.1 kDa
Source method src_method	man
Copy count entity_count	14

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O,P,Q,R,S,T,U,V,X,Y,Z,1,2,3

SALPTPHEIRNHLDDYVIGQEQAKKVLAVAVYNHYKRLRNGDTSNGVELGKSNILLIGPTGSGKTLLAETLARLLDVPFTMADATTLTEAGYVGEDVENIIQKLLQKSDYDVQKAQRGIVYIDQIDKISRKSDNPSITRDVSGEGVQQALLKLIEGTVAAVPPQGGRKHPQQEFLQVDTSKILFICGGAFAGLDKVISHRVETGSGIGFGATVKAKSDKASEGELLAQVEPEDLIKFGLIPEFIGRLPVVATLNELSEEALIQILKEPKNALTKQYQALFNLEGVDLEFRDEALDAIAKKAMARKTGARGLRSIVEAALLDTMYDLPSMEDVEKVVIDESVIDGQSEPLLIYGKPEAQQASGEGGGTSG

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
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	14

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6. Fold Classification (SCOP + CATH) 42 domains

SCOP 2.08 (28 domains)

Domain ID domain_id	d6ppe1_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppe2_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppe3_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppea_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppeb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppec_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6pped_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppee_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppef_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppeg_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppeh_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppei_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppej_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppek_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppel_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppem_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppen_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.14 — ClpP/crotonase
Superfamily Superfamily superfamily	c.14.1 — ClpP/crotonase
Family Family family	c.14.1.1 — Clp protease, ClpP subunit

Domain ID domain_id	d6ppeo_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppep_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppeq_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6pper_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppes_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppet_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppeu_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppev_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppex_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppey_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

Domain ID domain_id	d6ppez_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.20 — Extended AAA-ATPase domain

CATH v4.4 (14 domains)

Domain ID domain_id	6ppeA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeB00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeC00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeD00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeE00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeF00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeG00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeH00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeI00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeJ00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeK00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeL00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeM00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

Domain ID domain_id	6ppeN00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	226 — 2-enoyl-CoA Hydratase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — 2-enoyl-CoA Hydratase; Chain A, domain 1

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

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

Resolution resolution	3.19 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	443717

ClpP and ClpX IGF loop in ClpX-ClpP complex with D7 symmetry

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

ATP-dependent Clp protease proteolytic subunit

State in the Current Structure

Other States of the Same Protein in the Database

ATP-dependent Clp protease ATP-binding subunit ClpX

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

6ppe__assembly_1__model_1

6ppe__assembly_1__model_1 | I(q)

6ppe__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

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) 42 domains

SCOP 2.08 (28 domains)

CATH v4.4 (14 domains)

7. Citations (1)

ClpP and ClpX IGF loop in ClpX-ClpP complex with D7 symmetry

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

ATP-dependent Clp protease proteolytic subunit

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

ATP-dependent Clp protease ATP-binding subunit ClpX

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

6ppe__assembly_1__model_1

6ppe__assembly_1__model_1 | I(q)

6ppe__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

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) 42 domains

SCOP 2.08 (28 domains)

CATH v4.4 (14 domains)

7. Citations (1)