SAXSdb — 3tw7

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

Pyruvate carboxylase protein

Rhizobium etli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	MAGNESIUM ION × 4 ZINC ION × 4 CHLORIDE ION × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q2K340_RHIEC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 13–1165； UniProt 2–1154 Author chain B； PDBConstruct 13–1165； UniProt 2–1154

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	3tw7
Deposition date deposition_date	2011-09-21
Structure title title	Structure of Rhizobium etli pyruvate carboxylase T882A crystallized without acetyl coenzyme-A
Keywords keywords	BIOTIN CARBOXYLASE, LIGASE; LIGASE
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.

3tw7__assembly_1__model_1

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

Download this curve (.dat)

3tw7__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3tw7__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	57.60 Å
Rg (electron density)	57.17 Å
Total Rg	57.41 Å
Atom count	30024
Residues	4004
Excluded volume	534130 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3tw7__assembly_1__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 (5)

Entity 1 Entity 1 polymer

Description description	Pyruvate carboxylase protein
Molecular weight formula_weight	127532.0 kDa
EC 编号 ec_number	6.4.1.1
Mutation mutation	T882A
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	15185

MHHHHHHHHHGGPISKILVANRSEIAIRVFRAANELGIKTVAIWAEEDKLALHRFKADESYQVGRGPHLARDLGPIESYLSIDEVIRVAKLSGADAIHPGYGLLSESPEFVDACNKAGIIFIGPKADTMRQLGNKVAARNLAISVGVPVVPATEPLPDDMAEVAKMAAAIGYPVMLKASWGGGGRGMRVIRSEADLAKEVTEAKREAMAAFGKDEVYLEKLVERARHVESQILGDTHGNVVHLFERDCSVQRRNQKVVERAPAPYLSEAQRQELAAYSLKIAGATNYIGAGTVEYLMDADTGKFYFIEVNPRIQVEHTVTEVVTGIDIVKAQIHILDGAAIGTPQSGVPNQEDIRLNGHALQCRVTTEDPEHNFIPDYGRITAYRSASGFGIRLDGGTSYSGAIITRYYDPLLVKVTAWAPNPLEAISRMDRALREFRIRGVATNLTFLEAIIGHPKFRDNSYTTRFIDTTPELFQQVKRQDRATKLLTYLADVTVNGHPEAKDRPKPLENAARPVVPYANGNGVKDGTKQLLDTLGPKKFGEWMRNEKRVLLTDTTMRDGHQSLLATRMRTYDIARIAGTYSHALPNLLSLECWGGATFDVSMRFLTEDPWERLALIREGAPNLLLQMLLRGANGVGYTNYPDNVVKYFVRQAAKGGIDLFRVFDCLNWVENMRVSMDAIAEENKLCEAAICYTGDILNSARPKYDLKYYTNLAVELEKAGAHIIAVKDMAGLLKPAAAKVLFKALREATGLPIHFHTHDTSGIAAATVLAAVEAGVDAVDAAMDALSGNTSQPCLGSIVEALSGSERDPGLDPAWIRRISFYWEAVRNQYAAFESDLKGPASEVYLHEMPGGQFTNLKEQARSLGLETRWHQVAQAYADANQMFGDIVKVAPSSKVVGDMALMMVSQDLTVADVVSPDREVSFPESVVSMLKGDLGQPPSGWPEALQKKALKGEKPYTVRPGSLLKEADLDAERKVIEKKLEREVSDFEFASYLMYPKVFTDFALASDTYGPVSVLPTPAYFYGLADGEELFADIEKGKTLVIVNQAVSATDSQGMVTVFFELNGQPRRIKVPDRAHGATGAAVRRKAEPGNAAHVGAPMPGVISRVFVSSGQAVNAGDVLVSIEAMKMETAIHAEKDGTIAEVLVKAGDQIDAKDLLAVYGG

Source Source

Source organism organism	Rhizobium etli
NCBI taxonomy ID ncbi_taxonomy_id	347834
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	12

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6. Fold Classification (SCOP + CATH) 11 domains

CATH v4.4 (11 domains)

Domain ID domain_id	3tw7A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	3tw7A02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	600 — pyruvate carboxylase f1077a mutant fold
Homologous superfamily homologous superfamily	10 — pyruvate carboxylase f1077a mutant domain

Domain ID domain_id	3tw7A03
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	70 — Aldolase class I

Domain ID domain_id	3tw7A04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily	90 — Conserved carboxylase domain

Domain ID domain_id	3tw7A05
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	60 — Homeodomain-like

Domain ID domain_id	3tw7B01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	3tw7B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	470 — D-amino Acid Aminotransferase; Chain A, domain 1
Homologous superfamily homologous superfamily	20 — ATP-grasp fold, B domain

Domain ID domain_id	3tw7B03
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	600 — pyruvate carboxylase f1077a mutant fold
Homologous superfamily homologous superfamily	10 — pyruvate carboxylase f1077a mutant domain

Domain ID domain_id	3tw7B04
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	70 — Aldolase class I

Domain ID domain_id	3tw7B05
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily	90 — Conserved carboxylase domain

Domain ID domain_id	3tw7B06
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily	60 — Homeodomain-like

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Unit-cell length a length_a	264.158 Å
Unit-cell length b length_b	264.158 Å
Unit-cell length c length_c	91.790 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	16

Space group space_group	I 41
Space-group number int_tables_number	80
Crystal system crystal_system	—

Resolution resolution	3.100 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2519
R_work r_work	0.2498
R_free r_free	0.2919

Structure of Rhizobium etli pyruvate carboxylase T882A crystallized without acetyl coenzyme-A

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

Pyruvate carboxylase 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

3tw7__assembly_1__model_1

3tw7__assembly_1__model_1 | I(q)

3tw7__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 11 domains

CATH v4.4 (11 domains)

7. Citations (1)

Structure of Rhizobium etli pyruvate carboxylase T882A crystallized without acetyl coenzyme-A

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

Pyruvate carboxylase 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

3tw7__assembly_1__model_1

3tw7__assembly_1__model_1 | I(q)

3tw7__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 11 domains

CATH v4.4 (11 domains)

7. Citations (1)