2xg5

E. coli P pilus chaperone-subunit complex PapD-PapH bound to pilus biogenesis inhibitor, pilicide 5d

Method: X-RAY DIFFRACTION

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

CHAPERONE PROTEIN PAPD

ESCHERICHIA COLI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PAP FIMBRIAL MINOR PILIN PROTEIN × 1 （P07111） GLYCEROL × 1 (2R,3R)-8-CYCLOPROPYL-7-(NAPHTHALEN-1-YLMETHYL)-5-OXO-2-PHENYL-2,3-DIHYDRO-5H-[1,3]THIAZOLO[3,2-A]PYRIDINE-3-CARBOXYLIC ACID × 1 (2R)-2-[5-CYCLOPROPYL-6-(HYDROXYSULFANYL)-4-(NAPHTHALEN-1-YLMETHYL)-2-OXOPYRIDIN-1(2H)-YL]-3-PHENYLPROPANOIC ACID × 1 S-1,2-PROPANEDIOL × 1 COBALT (II) ION × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PAPD_ECOLX
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–218； UniProt 22–239

PAP FIMBRIAL MINOR PILIN PROTEIN

ESCHERICHIA COLI

UniProt P07111

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	CHAPERONE PROTEIN PAPD × 1 （P15319） GLYCEROL × 1 (2R,3R)-8-CYCLOPROPYL-7-(NAPHTHALEN-1-YLMETHYL)-5-OXO-2-PHENYL-2,3-DIHYDRO-5H-[1,3]THIAZOLO[3,2-A]PYRIDINE-3-CARBOXYLIC ACID × 1 (2R)-2-[5-CYCLOPROPYL-6-(HYDROXYSULFANYL)-4-(NAPHTHALEN-1-YLMETHYL)-2-OXOPYRIDIN-1(2H)-YL]-3-PHENYLPROPANOIC ACID × 1 S-1,2-PROPANEDIOL × 1 COBALT (II) ION × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PAPH_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–173； UniProt 23–195

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	2xg5
Deposition date deposition_date	2010-05-30
Structure title title	E. coli P pilus chaperone-subunit complex PapD-PapH bound to pilus biogenesis inhibitor, pilicide 5d
Keywords keywords	CHAPERONE, CHAPERONE-SURFACE ACTIVE PROTEIN COMPLEX; CHAPERONE
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.

2xg5__assembly_1__model_1

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

Download this curve (.dat)

2xg5__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xg5__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.47 Å
Rg (electron density)	22.46 Å
Total Rg	23.29 Å
Atom count	2867
Residues	363
Excluded volume	51116 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xg5__assembly_1__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 (8)

Entity 1 Entity 1 polymer

Description description	CHAPERONE PROTEIN PAPD
Molecular weight formula_weight	24589.9 kDa
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	3106

AVSLDRTRAVFDGSEKSMTLDISNDNKQLPYLAQAWIENENQEKIITGPVIATPPVQRLEPGAKSMVRLSTTPDISKLPQDRESLFYFNLREIPPRSEKANVLQIALQTKIKLFYRPAAIKTRPNEVWQDQLILNKVSGGYRIENPTPYYVTVIGLGGSEKQAEEGEFETVMLSPRSEQTVKSANYNTPYLSYINDYGGRPVLSFICNGSRCSVKKEK

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	PAP FIMBRIAL MINOR PILIN PROTEIN
Molecular weight formula_weight	19297.7 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

GPFPPPGMSLPEYWGEEHVWWDGRAAFHGEVVRPACTLAMEDAWQIIDMGETPVRDLQNGFSGPERKFSLRLRNCEFNSQGGNLFSDSRIRVTFDGVRGETPDKFNLSGQAKGINLQIADVRGNIARAGKVMPAIPLTGNEEALDYTLRIVRNGKKLEAGNYFAVLGFRVDYE

Source Source

Source organism organism	ESCHERICHIA COLI
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	(2R,3R)-8-CYCLOPROPYL-7-(NAPHTHALEN-1-YLMETHYL)-5-OXO-2-PHENYL-2,3-DIHYDRO-5H-[1,3]THIAZOLO[3,2-A]PYRIDINE-3-CARBOXYLIC ACID
Molecular weight formula_weight	453.6 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	(2R)-2-[5-CYCLOPROPYL-6-(HYDROXYSULFANYL)-4-(NAPHTHALEN-1-YLMETHYL)-2-OXOPYRIDIN-1(2H)-YL]-3-PHENYLPROPANOIC ACID
Molecular weight formula_weight	471.6 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	S-1,2-PROPANEDIOL
Molecular weight formula_weight	76.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	COBALT (II) ION
Molecular weight formula_weight	58.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	202

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d2xg5a1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.11 — PapD-like
Family Family family	b.1.11.1 — Pilus chaperone

Domain ID domain_id	d2xg5a2
Class class	b — All beta proteins
Fold Fold fold	b.7 — C2 domain-like
Superfamily Superfamily superfamily	b.7.2 — Periplasmic chaperone C-domain
Family Family family	b.7.2.1 — Periplasmic chaperone C-domain

Domain ID domain_id	d2xg5b_
Class class	b — All beta proteins
Fold Fold fold	b.2 — Common fold of diphtheria toxin/transcription factors/cytochrome f
Superfamily Superfamily superfamily	b.2.3 — Bacterial adhesins
Family Family family	b.2.3.2 — Pilus subunits

CATH v4.4 (3 domains)

Domain ID domain_id	2xg5A01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	2xg5A02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	2xg5B01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1090 — Fimbrial-type adhesion domain

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Unit-cell length a length_a	103.610 Å
Unit-cell length b length_b	149.830 Å
Unit-cell length c length_c	82.900 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	8

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.1906
R_work r_work	0.1893
R_free r_free	0.2150

E. coli P pilus chaperone-subunit complex PapD-PapH bound to pilus biogenesis inhibitor, pilicide 5d

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

CHAPERONE PROTEIN PAPD

State in the Current Structure

Other States of the Same Protein in the Database

PAP FIMBRIAL MINOR PILIN 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

2xg5__assembly_1__model_1

2xg5__assembly_1__model_1 | I(q)

2xg5__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

E. coli P pilus chaperone-subunit complex PapD-PapH bound to pilus biogenesis inhibitor, pilicide 5d

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

CHAPERONE PROTEIN PAPD

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PAP FIMBRIAL MINOR PILIN 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

2xg5__assembly_1__model_1

2xg5__assembly_1__model_1 | I(q)

2xg5__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)