SAXSdb — 4etg

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

Macrophage migration inhibitory factor

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	SULFATE ION × 3 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MIF_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–114； UniProt 2–115 Author chain B； PDBConstruct 1–114； UniProt 2–115 Author chain C； PDBConstruct 1–114； UniProt 2–115

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	4etg
Deposition date deposition_date	2012-04-24
Structure title title	Crystal Structure of MIF L46G mutant
Keywords keywords	Keto-enol tautomerase, Isomerase; ISOMERASE
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.

4etg__assembly_1__model_1

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

Download this curve (.dat)

4etg__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4etg__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.15 Å
Rg (electron density)	18.84 Å
Total Rg	19.73 Å
Atom count	2601
Residues	342
Excluded volume	46048 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4etg__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 (3)

Entity 1 Entity 1 polymer

Description description	Macrophage migration inhibitory factor
Molecular weight formula_weight	12299.0 kDa
EC 编号 ec_number	5.3.2.1, 5.3.3.12
Mutation mutation	L46G
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	2862

PMFIVNTNVPRASVPDGFLSELTQQLAQATGKPPQYIAVHVVPDQGMAFGGSSEPCALCSLHSIGKIGGAQNRSYSKLLCGLLAERLRISPDRVYINYYDMNAANVGWNNSTFA

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	229

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d4etga_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.80 — Tautomerase/MIF
Superfamily Superfamily superfamily	d.80.1 — Tautomerase/MIF
Family Family family	d.80.1.3 — MIF-related

Domain ID domain_id	d4etgb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.80 — Tautomerase/MIF
Superfamily Superfamily superfamily	d.80.1 — Tautomerase/MIF
Family Family family	d.80.1.3 — MIF-related

Domain ID domain_id	d4etgc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.80 — Tautomerase/MIF
Superfamily Superfamily superfamily	d.80.1 — Tautomerase/MIF
Family Family family	d.80.1.3 — MIF-related

CATH v4.4 (3 domains)

Domain ID domain_id	4etgA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	429 — Macrophage Migration Inhibitory Factor
Homologous superfamily homologous superfamily	10 — Macrophage Migration Inhibitory Factor

Domain ID domain_id	4etgB00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	429 — Macrophage Migration Inhibitory Factor
Homologous superfamily homologous superfamily	10 — Macrophage Migration Inhibitory Factor

Domain ID domain_id	4etgC00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	429 — Macrophage Migration Inhibitory Factor
Homologous superfamily homologous superfamily	10 — Macrophage Migration Inhibitory Factor

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Unit-cell length a length_a	67.542 Å
Unit-cell length b length_b	68.665 Å
Unit-cell length c length_c	89.074 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	12

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

Resolution resolution	1.610 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.2212
R_work r_work	0.2212
R_free r_free	0.2490

Crystal Structure of MIF L46G mutant

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

Macrophage migration inhibitory factor

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

4etg__assembly_1__model_1

4etg__assembly_1__model_1 | I(q)

4etg__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 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

Crystal Structure of MIF L46G mutant

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

Macrophage migration inhibitory factor

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

4etg__assembly_1__model_1

4etg__assembly_1__model_1 | I(q)

4etg__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 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)