SAXSdb — 1wcr

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

;PTS SYSTEM, N, N'-DIACETYLCHITOBIOSE-SPECIFIC IIA COMPONENT ;

ESCHERICHIA COLI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PTCA_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–103； UniProt 14–116 Author chain B； PDBConstruct 1–103； UniProt 14–116 Author chain C； PDBConstruct 1–103； UniProt 14–116

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	1wcr
Deposition date deposition_date	2004-11-19
Structure title title	Trimeric Structure of the Enzyme IIA from Escherichia coli Phosphotransferase System Specific for N,N'-Diacetylchitobiose
Keywords keywords	IIA, PTS, MUTAGENESIS, CHITOBIOSE, TRANSFERASE, SUGAR TRANSPORT, PHOSPHOTRANSFERASE; TRANSFERASE
Experimental Method method	SOLUTION NMR

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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.

1wcr__assembly_1__model_1

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

Download this curve (.dat)

1wcr__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1wcr__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.92 Å
Rg (electron density)	19.78 Å
Total Rg	20.75 Å
Atom count	4812
Residues	309
Excluded volume	42447 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1wcr__assembly_1__model_1`	trimeric （3）	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 (1)

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1wcra_
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.2 — Enzyme IIa from lactose specific PTS, IIa-lac
Family Family family	a.7.2.0 — automated matches

Domain ID domain_id	d1wcrb_
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.2 — Enzyme IIa from lactose specific PTS, IIa-lac
Family Family family	a.7.2.0 — automated matches

Domain ID domain_id	d1wcrc_
Class class	a — All alpha proteins
Fold Fold fold	a.7 — Spectrin repeat-like
Superfamily Superfamily superfamily	a.7.2 — Enzyme IIa from lactose specific PTS, IIa-lac
Family Family family	a.7.2.0 — automated matches

CATH v4.4 (3 domains)

Domain ID domain_id	1wcrA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	80 — Phosphotransferase system, lactose/cellobiose-type IIA subunit

Domain ID domain_id	1wcrB00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	80 — Phosphotransferase system, lactose/cellobiose-type IIA subunit

Domain ID domain_id	1wcrC00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	80 — Phosphotransferase system, lactose/cellobiose-type IIA subunit

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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	3

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

Description description	;PTS SYSTEM, N, N'-DIACETYLCHITOBIOSE-SPECIFIC IIA COMPONENT ;
Molecular weight formula_weight	11256.2 kDa
EC 编号 ec_number	2.7.1.69
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	3

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	4812

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

Trimeric Structure of the Enzyme IIA from Escherichia coli Phosphotransferase System Specific for N,N'-Diacetylchitobiose

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

;PTS SYSTEM, N, N'-DIACETYLCHITOBIOSE-SPECIFIC IIA COMPONENT ;

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

1wcr__assembly_1__model_1

1wcr__assembly_1__model_1 | I(q)

1wcr__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Trimeric Structure of the Enzyme IIA from Escherichia coli Phosphotransferase System Specific for N,N'-Diacetylchitobiose

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

;PTS SYSTEM, N, N'-DIACETYLCHITOBIOSE-SPECIFIC IIA COMPONENT ;

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

1wcr__assembly_1__model_1

1wcr__assembly_1__model_1 | I(q)

1wcr__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)