SAXSdb — 9x8z

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

PqqD family protein

Paenibacillus alginolyticus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	LppA-leader × 1 （A0ABT4G8U6） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	LppA-leader × 1 （A0ABT4G8U6） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0ABT4G916_9BACL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 19–107； UniProt 1–89 Author chain D； PDBConstruct 19–107； UniProt 1–89

LppA-leader

Paenibacillus alginolyticus

UniProt A0ABT4G8U6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PqqD family protein × 1 （A0ABT4G916） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	PqqD family protein × 1 （A0ABT4G916） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0ABT4G8U6_9BACL
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–27； UniProt 1–27 Author chain C； PDBConstruct 1–27； UniProt 1–27

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	9x8z
Deposition date deposition_date	2025-10-20
Structure title title	LppB in Complex with LppA leader peptide
Keywords keywords	RRE, Complex, Leader peptide, PEPTIDE BINDING PROTEIN; PEPTIDE BINDING PROTEIN
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.

9x8z__assembly_1__model_1

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

Download this curve (.dat)

9x8z__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9x8z__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	15.03 Å
Rg (electron density)	13.87 Å
Total Rg	15.07 Å
Atom count	868
Residues	108
Excluded volume	15453 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9x8z__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`9x8z__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	PqqD family protein
Molecular weight formula_weight	12151.5 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,D
Atom count atom_count	1814

MADLTGSSHHHHHHSQDPMTQYLRMNDYESIQLDMEWIILNTDEYTLTKLNGVGGFCWSLLGAAQTVGSISEAIRKEYEFVNETVEEDIEAFLNDMIGRGLVQHAVS

Source Source

Source organism organism	Paenibacillus alginolyticus
NCBI taxonomy ID ncbi_taxonomy_id	59839
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 polymer

Description description	LppA-leader
Molecular weight formula_weight	3314.8 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

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

MEENTKREQKLYARPMVLSQQPVRFET

Source Source

Source organism organism	Paenibacillus alginolyticus
NCBI taxonomy ID ncbi_taxonomy_id	59839
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	94

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Unit-cell length a length_a	52.858 Å
Unit-cell length b length_b	55.595 Å
Unit-cell length c length_c	83.866 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	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	orthorhombic

Resolution resolution	2.100 Å
Low-resolution limit resolution_low	32.850 Å
R factor r_factor	0.2057
R_work r_work	0.2009
R_free r_free	0.2494

LppB in Complex with LppA leader peptide

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

PqqD family protein

State in the Current Structure

Other States of the Same Protein in the Database

LppA-leader

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

9x8z__assembly_1__model_1

9x8z__assembly_1__model_1 | I(q)

9x8z__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

7. Citations (1)

LppB in Complex with LppA leader peptide

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

PqqD family 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

LppA-leader

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

9x8z__assembly_1__model_1

9x8z__assembly_1__model_1 | I(q)

9x8z__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

7. Citations (1)