2b4t

Crystal structure of glyceraldehyde-3-phosphate dehydrogenase from Plasmodium falciparum at 2.25 Angstrom resolution reveals intriguing extra electron density in the active site

Method: X-RAY DIFFRACTION

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

glyceraldehyde-3-phosphate dehydrogenase

Plasmodium falciparum

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	NICOTINAMIDE-ADENINE-DINUCLEOTIDE × 4 4-(2-AMINOETHYL)BENZENESULFONYL FLUORIDE × 3 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8T6B1_PLAFA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain O； PDBConstruct 9–345； UniProt 1–337 Author chain P； PDBConstruct 9–345； UniProt 1–337 Author chain Q； PDBConstruct 9–345； UniProt 1–337 Author chain R； PDBConstruct 9–345； UniProt 1–337

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	2b4t
Deposition date deposition_date	2005-09-26
Structure title title	Crystal structure of glyceraldehyde-3-phosphate dehydrogenase from Plasmodium falciparum at 2.25 Angstrom resolution reveals intriguing extra electron density in the active site
Keywords keywords	;STRUCTURAL GENOMICS, PSI, PROTEIN STRUCTURE INITIATIVE, GAPDH, GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE, Structural Genomics of Pathogenic Protozoa Consortium, SGPP, OXIDOREDUCTASE ;; OXIDOREDUCTASE
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.

2b4t__assembly_1__model_1

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

Download this curve (.dat)

2b4t__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2b4t__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	32.22 Å
Rg (electron density)	31.52 Å
Total Rg	32.25 Å
Atom count	10399
Residues	1332
Excluded volume	185890 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2b4t__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 (4)

Entity 1 Entity 1 polymer

Description description	glyceraldehyde-3-phosphate dehydrogenase
Molecular weight formula_weight	37644.3 kDa
EC 编号 ec_number	1.2.1.12
Mutation mutation	V3A, N336T, N337S
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O,P,Q,R
Atom count atom_count	10631

MAHHHHHHMAATKLGINGFGRIGRLVFRAAFGRKDIEVVAINDPFMDLNHLCYLLKYDSVHGQFPCEVTHADGFLLIGEKKVSVFAEKDPSQIPWGKCQVDVVCESTGVFLTKELASSHLKGGAKKVIMSAPPKDDTPIYVMGINHHQYDTKQLIVSNASCTTNCLAPLAKVINDRFGIVEGLMTTVHASTANQLVVDGPSKGGKDWRAGRCALSNIIPASTGAAKAVGKVLPELNGKLTGVAFRVPIGTVSVVDLVCRLQKPAKYEEVALEIKKAAEGPLKGILGYTEDEVVSQDFVHDNRSSIFDMKAGLALNDNFFKLVSWYDNEWGYSNRVLDLAVHITTS

Source Source

Source organism organism	Plasmodium falciparum
Common name common_name	malaria parasite P. falciparum
NCBI taxonomy ID ncbi_taxonomy_id	5833
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	NICOTINAMIDE-ADENINE-DINUCLEOTIDE
Molecular weight formula_weight	663.4 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 non-polymer

Description description	4-(2-AMINOETHYL)BENZENESULFONYL FLUORIDE
Molecular weight formula_weight	203.2 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	232

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6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d2b4to1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.2 — NAD(P)-binding Rossmann-fold domains
Superfamily Superfamily superfamily	c.2.1 — NAD(P)-binding Rossmann-fold domains
Family Family family	c.2.1.3 — Glyceraldehyde-3-phosphate dehydrogenase-like, N-terminal domain

Domain ID domain_id	d2b4to2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.81 — FwdE/GAPDH domain-like
Superfamily Superfamily superfamily	d.81.1 — Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain
Family Family family	d.81.1.1 — GAPDH-like

Domain ID domain_id	d2b4to3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2b4tp1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.2 — NAD(P)-binding Rossmann-fold domains
Superfamily Superfamily superfamily	c.2.1 — NAD(P)-binding Rossmann-fold domains
Family Family family	c.2.1.3 — Glyceraldehyde-3-phosphate dehydrogenase-like, N-terminal domain

Domain ID domain_id	d2b4tp2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.81 — FwdE/GAPDH domain-like
Superfamily Superfamily superfamily	d.81.1 — Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain
Family Family family	d.81.1.1 — GAPDH-like

Domain ID domain_id	d2b4tp3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2b4tq1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.2 — NAD(P)-binding Rossmann-fold domains
Superfamily Superfamily superfamily	c.2.1 — NAD(P)-binding Rossmann-fold domains
Family Family family	c.2.1.3 — Glyceraldehyde-3-phosphate dehydrogenase-like, N-terminal domain

Domain ID domain_id	d2b4tq2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.81 — FwdE/GAPDH domain-like
Superfamily Superfamily superfamily	d.81.1 — Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain
Family Family family	d.81.1.1 — GAPDH-like

Domain ID domain_id	d2b4tq3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d2b4tr1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.2 — NAD(P)-binding Rossmann-fold domains
Superfamily Superfamily superfamily	c.2.1 — NAD(P)-binding Rossmann-fold domains
Family Family family	c.2.1.3 — Glyceraldehyde-3-phosphate dehydrogenase-like, N-terminal domain

Domain ID domain_id	d2b4tr2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.81 — FwdE/GAPDH domain-like
Superfamily Superfamily superfamily	d.81.1 — Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain
Family Family family	d.81.1.1 — GAPDH-like

Domain ID domain_id	d2b4tr3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (8 domains)

Domain ID domain_id	2b4tO01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

Domain ID domain_id	2b4tO02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	360 — Dihydrodipicolinate Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Dihydrodipicolinate Reductase; domain 2

Domain ID domain_id	2b4tP01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

Domain ID domain_id	2b4tP02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	360 — Dihydrodipicolinate Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Dihydrodipicolinate Reductase; domain 2

Domain ID domain_id	2b4tQ01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

Domain ID domain_id	2b4tQ02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	360 — Dihydrodipicolinate Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Dihydrodipicolinate Reductase; domain 2

Domain ID domain_id	2b4tR01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

Domain ID domain_id	2b4tR02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	360 — Dihydrodipicolinate Reductase; domain 2
Homologous superfamily homologous superfamily	10 — Dihydrodipicolinate Reductase; domain 2

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Unit-cell length a length_a	69.687 Å
Unit-cell length b length_b	106.056 Å
Unit-cell length c length_c	91.057 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	107.24 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	43.480 Å
R factor r_factor	0.1757
R_work r_work	0.1735
R_free r_free	0.2168

Crystal structure of glyceraldehyde-3-phosphate dehydrogenase from Plasmodium falciparum at 2.25 Angstrom resolution reveals intriguing extra electron density in the active site

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

glyceraldehyde-3-phosphate dehydrogenase

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

2b4t__assembly_1__model_1

2b4t__assembly_1__model_1 | I(q)

2b4t__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

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 water

6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (12 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Crystal structure of glyceraldehyde-3-phosphate dehydrogenase from Plasmodium falciparum at 2.25 Angstrom resolution reveals intriguing extra electron density in the active site

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

glyceraldehyde-3-phosphate dehydrogenase

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

2b4t__assembly_1__model_1

2b4t__assembly_1__model_1 | I(q)

2b4t__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

5. Entities and Polymers Entities & Polymers (4)

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 water

6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (12 domains)

CATH v4.4 (8 domains)

7. Citations (1)