5e0k

X-ray crystal structure of tryptophan synthase complex from Pyrococcus furiosus at 2.76 A

Method: X-RAY DIFFRACTION

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

Tryptophan synthase alpha chain

Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase beta chain 1 × 2 （Q8U093） PHOSPHATE ION × 2 water × 4	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase beta chain 1 × 2 （Q8U093） PHOSPHATE ION × 2 water × 4	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase beta chain 1 × 2 （Q8U093） PHOSPHATE ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRPA_PYRFU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–248； UniProt 1–248 Author chain C； PDBConstruct 1–248； UniProt 1–248 Author chain E； PDBConstruct 1–248； UniProt 1–248 Author chain G； PDBConstruct 1–248； UniProt 1–248 Author chain I； PDBConstruct 1–248； UniProt 1–248 Author chain K； PDBConstruct 1–248； UniProt 1–248

Tryptophan synthase beta chain 1

Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)

UniProt Q8U093

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase alpha chain × 2 （Q8U094） PHOSPHATE ION × 2 water × 4	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase alpha chain × 2 （Q8U094） PHOSPHATE ION × 2 water × 4	Consistent with protein count
3	Protein heterocomplex	Heteromer	Protein 4	Tryptophan synthase alpha chain × 2 （Q8U094） PHOSPHATE ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TRPB1_PYRFU
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–388； UniProt 1–388 Author chain D； PDBConstruct 1–388； UniProt 1–388 Author chain F； PDBConstruct 1–388； UniProt 1–388 Author chain H； PDBConstruct 1–388； UniProt 1–388 Author chain J； PDBConstruct 1–388； UniProt 1–388 Author chain L； PDBConstruct 1–388； UniProt 1–388

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	5e0k
Deposition date deposition_date	2015-09-29
Structure title title	X-ray crystal structure of tryptophan synthase complex from Pyrococcus furiosus at 2.76 A
Keywords keywords	Complex, PLP, Lyase, Enzyme; LYASE
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.

5e0k__assembly_1__model_1

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

Download this curve (.dat)

5e0k__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

5e0k__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.36 Å
Rg (electron density)	38.88 Å
Total Rg	39.00 Å
Atom count	9611
Residues	1251
Excluded volume	172140 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`5e0k__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`5e0k__assembly_2__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`5e0k__assembly_3__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 (4)

Entity 1 Entity 1 polymer

Description description	Tryptophan synthase alpha chain
Molecular weight formula_weight	27535.8 kDa
EC 编号 ec_number	4.2.1.20
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,C,E,G,I,K
Atom count atom_count	28872

MFKDGSLIPYLTAGDPDKQSTLNFLLALDEYAGAIELGIPFSDPIADGKTIQESHYRALKNGFKLREAFWIVKEFRRHSSTPIVLMTYYNPIYRAGVRNFLAEAKASGVDGILVVDLPVFHAKEFTEIAREEGIKTVFLAAPNTPDERLKVIDDMTTGFVYLVSLYGTTGAREEIPKTAYDLLRRAKRICRNKVAVGFGVSKREHVVSLLKEGANGVVVGSALVKIIGEKGREATEFLKKKVEELLGI

Source Source

Source organism organism	Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)
NCBI taxonomy ID ncbi_taxonomy_id	186497
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Tryptophan synthase beta chain 1
Molecular weight formula_weight	43885.0 kDa
EC 编号 ec_number	4.2.1.20
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

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

MWFGEFGGQYVPETLIEPLKELEKAYKRFKDDEEFNRQLNYYLKTWAGRPTPLYYAKRLTEKIGGAKIYLKREDLVHGGAHKTNNAIGQALLAKFMGKTRLIAETGAGQHGVATAMAGALLGMKVDIYMGAEDVERQKMNVFRMKLLGANVIPVNSGSRTLKDAINEALRDWVATFEYTHYLIGSVVGPHPYPTIVRDFQSVIGREAKAQILEAEGQLPDVIVACVGGGSNAMGIFYPFVNDKKVKLVGVEAGGKGLESGKHSASLNAGQVGVFHGMLSYFLQDEEGQIKPTHSIAPGLDYPGVGPEHAYLKKIQRAEYVTVTDEEALKAFHELSRTEGIIPALESAHAVAYAMKLAKEMSRDEIIIVNLSGRGDKDLDIVLKVSGNVLEHHHHHH

Source Source

Source organism organism	Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)
NCBI taxonomy ID ncbi_taxonomy_id	186497
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	6

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	73

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6. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d5e0ka_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d5e0kc_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kd_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d5e0ke_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kf_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d5e0kg_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kh_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d5e0ki_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kj_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

Domain ID domain_id	d5e0kk_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.2 — Ribulose-phoshate binding barrel
Family Family family	c.1.2.4 — Tryptophan biosynthesis enzymes

Domain ID domain_id	d5e0kl_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.79 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Superfamily Superfamily superfamily	c.79.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes
Family Family family	c.79.1.1 — Tryptophan synthase beta subunit-like PLP-dependent enzymes

CATH v4.4 (18 domains)

Domain ID domain_id	5e0kA00
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	5e0kB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kC00
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	5e0kD01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kD02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kE00
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	5e0kF01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kF02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kG00
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	5e0kH01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kH02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kI00
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	5e0kJ01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kJ02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kK00
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	5e0kL01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

Domain ID domain_id	5e0kL02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1100 —

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Unit-cell length a length_a	87.862 Å
Unit-cell length b length_b	225.014 Å
Unit-cell length c length_c	296.241 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	24

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.760 Å
Low-resolution limit resolution_low	39.910 Å
R factor r_factor	0.2059
R_work r_work	0.2043
R_free r_free	0.2377

X-ray crystal structure of tryptophan synthase complex from Pyrococcus furiosus at 2.76 A

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

Tryptophan synthase alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Tryptophan synthase beta chain 1

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

5e0k__assembly_1__model_1

5e0k__assembly_1__model_1 | I(q)

5e0k__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 (4)

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 water

6. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (12 domains)

CATH v4.4 (18 domains)

7. Citations (1)

X-ray crystal structure of tryptophan synthase complex from Pyrococcus furiosus at 2.76 A

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

Tryptophan synthase alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Tryptophan synthase beta chain 1

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

5e0k__assembly_1__model_1

5e0k__assembly_1__model_1 | I(q)

5e0k__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 (4)

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 water

6. Fold Classification (SCOP + CATH) 30 domains

SCOP 2.08 (12 domains)

CATH v4.4 (18 domains)

7. Citations (1)