SAXSdb — 4tqv

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

AlgM1

Sphingomonas sp.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	AlgM2 × 1 （Q9KWT7） AlgS × 2 （Q9KWT9）	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	AlgM2 × 1 （Q9KWT7） AlgS × 2 （Q9KWT9）	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	AlgM2 × 1 （Q9KWT7） AlgS × 2 （Q9KWT9）	Consistent with protein count
4	Protein heterocomplex	Heteromer	Protein 4	AlgM2 × 1 （Q9KWT7） AlgS × 2 （Q9KWT9）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KWT8_SPHSX
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–301； UniProt 25–324 Author chain E； PDBConstruct 2–301； UniProt 25–324 Author chain I； PDBConstruct 2–301； UniProt 25–324 Author chain M； PDBConstruct 2–301； UniProt 25–324

AlgM2

Sphingomonas sp.

UniProt Q9KWT7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgS × 2 （Q9KWT9）	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgS × 2 （Q9KWT9）	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgS × 2 （Q9KWT9）	Consistent with protein count
4	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgS × 2 （Q9KWT9）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KWT7_SPHSX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–293； UniProt 1–293 Author chain F； PDBConstruct 1–293； UniProt 1–293 Author chain J； PDBConstruct 1–293； UniProt 1–293 Author chain N； PDBConstruct 1–293； UniProt 1–293

AlgS

Sphingomonas sp.

UniProt Q9KWT9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgM2 × 1 （Q9KWT7）	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgM2 × 1 （Q9KWT7）	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgM2 × 1 （Q9KWT7）	Consistent with protein count
4	Protein heterocomplex	Heteromer	Protein 4	AlgM1 × 1 （Q9KWT8） AlgM2 × 1 （Q9KWT7）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9KWT9_SPHSX
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–363； UniProt 1–363 Author chain D； PDBConstruct 1–363； UniProt 1–363 Author chain G； PDBConstruct 1–363； UniProt 1–363 Author chain H； PDBConstruct 1–363； UniProt 1–363 Author chain K； PDBConstruct 1–363； UniProt 1–363 Author chain L； PDBConstruct 1–363； UniProt 1–363 Author chain O； PDBConstruct 1–363； UniProt 1–363 Author chain P； PDBConstruct 1–363； UniProt 1–363

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	4tqv
Deposition date deposition_date	2014-06-12
Structure title title	Crystal structure of a bacterial ABC transporter involved in the import of the acidic polysaccharide alginate
Keywords keywords	ABC, sphingomonas, alginate, transporter, TRANSPORT PROTEIN; TRANSPORT 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.

4tqv__assembly_1__model_1

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

Download this curve (.dat)

4tqv__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4tqv__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	39.10 Å
Rg (electron density)	38.51 Å
Total Rg	38.82 Å
Atom count	10125
Residues	1296
Excluded volume	183200 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4tqv__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4tqv__assembly_2__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4tqv__assembly_3__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`4tqv__assembly_4__model_1`	tetrameric （4）	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	AlgM1
Molecular weight formula_weight	34286.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,E,I,M
Atom count atom_count	40472

MERLWKDIKRDWLLYAMLLPTIIWFLIFLYKPMIGLQMAFKQYSAWKGIAGSPWIGFDHFVTLFQSEQFIRAIKNTLTLSGLSLLFGFPMPILLALMINEVYSKGYRKAVQTIVYLPHFISIVIVAGLVVTFLSPSTGVVNNMLSWIGLDRVYFLTQPEWFRPIYISSNIWKEAGFDSIVYLAAIMSINPALYESAQVDGATRWQMITRITLPCIVPTIAVLLVIRLGHILEVGFEYIILLYQPTTYETADVISTYIYRLGLQGARYDIATAAGIFNAVVALVIVLFANHMSRRITKTGVF

Source Source

Source organism organism	Sphingomonas sp.
NCBI taxonomy ID ncbi_taxonomy_id	28214
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	AlgM2
Molecular weight formula_weight	34496.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,F,J,N

MLATPFYSRSDRIFGIVNAVLLGIFALCALYPIIYIFSMSISSGAAVTQGRVFLLPVDIDFSAYGRVLHDKLFWTSYANTIFYTVFGVVTSLIFIVPGAYALSKPRIRGRRVFGFIIAFTMWFNAGMIPFFLNMRDLGLLDNRFGILIGFACNAFNIILMRNYFESISASFEEAARMDGANDLQILWKVYIPLAKPALATITLLCAISRWNGYFWAMVLLRAEEKIPLQVYLKKTIVDLNVNEEFAGALLTNSYSMETVVGAIIVMSIIPVIIVYPVVQKYFTKGVMLGGVKELEHHHHHHHHHH

Source Source

Source organism organism	Sphingomonas sp.
NCBI taxonomy ID ncbi_taxonomy_id	28214
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	AlgS
Molecular weight formula_weight	39574.5 kDa
Mutation mutation	E160Q
Source method src_method	man
Copy count entity_count	8

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,D,G,H,K,L,O,P

MVASVSIQNVVKRYDKTTVVHGVSLDIEPGEFVVLVGPSGCGKSTTLRMVAGLEEISGGTIRIDGRVINDLAPKDRDVAMVFQNYALYPHLNVRDNISFGLRLKRTKKSVIDAAVKTAADILGLQPLLERKPSDLSGGQRQRVAMGRAIVRDPKVFLFDQPLSNLDAKLRTQMRAEIKRLHQRLGTTVIYVTHDQVEAMTLADRIVVMRDGLIEQIGKPMDLFLHPANTFVASFIGSPPMNLMPARIAVDSTQHVELNGGNRISLLPRAGTHLAPGQEVVFGIRPEDVTLDGVEGSERAQIKATVDIVEPLGSESILHATVGDHSLVVKVGGLNEVHPGDPVTLHVDLTRVHLFDAQSQASIY

Source Source

Source organism organism	Sphingomonas sp.
NCBI taxonomy ID ncbi_taxonomy_id	28214
Host organism host_organism	Escherichia coli

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Unit-cell length a length_a	115.245 Å
Unit-cell length b length_b	151.187 Å
Unit-cell length c length_c	162.406 Å
Unit-cell angle α angle_alpha	68.66 °
Unit-cell angle β angle_beta	81.76 °
Unit-cell angle γ angle_gamma	90.10 °
Molecules per unit cell Z z_pdb	8

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

Resolution resolution	4.504 Å
Low-resolution limit resolution_low	29.816 Å
R factor r_factor	0.2800
R_work r_work	0.2786
R_free r_free	0.3201

Crystal structure of a bacterial ABC transporter involved in the import of the acidic polysaccharide alginate

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

AlgM1

State in the Current Structure

Other States of the Same Protein in the Database

AlgM2

State in the Current Structure

Other States of the Same Protein in the Database

AlgS

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

4tqv__assembly_1__model_1

4tqv__assembly_1__model_1 | I(q)

4tqv__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 polymer

Polymer Polymer

Source Source

7. Citations (1)

Crystal structure of a bacterial ABC transporter involved in the import of the acidic polysaccharide alginate

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

AlgM1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

AlgM2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

AlgS

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

4tqv__assembly_1__model_1

4tqv__assembly_1__model_1 | I(q)

4tqv__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 polymer

Polymer Polymer

Source Source

7. Citations (1)