1gg3

CRYSTAL STRUCTURE OF THE PROTEIN 4.1R MEMBRANE BINDING DOMAIN

Method: X-RAY DIFFRACTION

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

ERYTHROID MEMBRANE PROTEIN 4.1R

Homo sapiens

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	41_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–279； UniProt 1–279 Author chain B； PDBConstruct 1–279； UniProt 1–279 Author chain C； PDBConstruct 1–279； UniProt 1–279

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	1gg3
Deposition date deposition_date	2000-07-11
Structure title title	CRYSTAL STRUCTURE OF THE PROTEIN 4.1R MEMBRANE BINDING DOMAIN
Keywords keywords	BLOOD, 4.1R, MEMBRANE, 30kD, N-terminal domain, calmodulin, MEMBRANE PROTEIN; MEMBRANE PROTEIN
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.

1gg3__assembly_1__model_1

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

Download this curve (.dat)

1gg3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1gg3__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	21.87 Å
Rg (electron density)	20.90 Å
Total Rg	21.82 Å
Atom count	2279
Residues	279
Excluded volume	40964 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1gg3__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1gg3__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1gg3__assembly_3__model_1`	monomeric （1）	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) 18 domains

SCOP 2.08 (9 domains)

Domain ID domain_id	d1gg3a1
Class class	a — All alpha proteins
Fold Fold fold	a.11 — Acyl-CoA binding protein-like
Superfamily Superfamily superfamily	a.11.2 — Second domain of FERM
Family Family family	a.11.2.1 — Second domain of FERM

Domain ID domain_id	d1gg3a2
Class class	b — All beta proteins
Fold Fold fold	b.55 — PH domain-like barrel
Superfamily Superfamily superfamily	b.55.1 — PH domain-like
Family Family family	b.55.1.5 — Third domain of FERM

Domain ID domain_id	d1gg3a3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.1 — Ubiquitin-like
Family Family family	d.15.1.4 — First domain of FERM

Domain ID domain_id	d1gg3b1
Class class	a — All alpha proteins
Fold Fold fold	a.11 — Acyl-CoA binding protein-like
Superfamily Superfamily superfamily	a.11.2 — Second domain of FERM
Family Family family	a.11.2.1 — Second domain of FERM

Domain ID domain_id	d1gg3b2
Class class	b — All beta proteins
Fold Fold fold	b.55 — PH domain-like barrel
Superfamily Superfamily superfamily	b.55.1 — PH domain-like
Family Family family	b.55.1.5 — Third domain of FERM

Domain ID domain_id	d1gg3b3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.1 — Ubiquitin-like
Family Family family	d.15.1.4 — First domain of FERM

Domain ID domain_id	d1gg3c1
Class class	a — All alpha proteins
Fold Fold fold	a.11 — Acyl-CoA binding protein-like
Superfamily Superfamily superfamily	a.11.2 — Second domain of FERM
Family Family family	a.11.2.1 — Second domain of FERM

Domain ID domain_id	d1gg3c2
Class class	b — All beta proteins
Fold Fold fold	b.55 — PH domain-like barrel
Superfamily Superfamily superfamily	b.55.1 — PH domain-like
Family Family family	b.55.1.5 — Third domain of FERM

Domain ID domain_id	d1gg3c3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.15 — beta-Grasp (ubiquitin-like)
Superfamily Superfamily superfamily	d.15.1 — Ubiquitin-like
Family Family family	d.15.1.4 — First domain of FERM

CATH v4.4 (9 domains)

Domain ID domain_id	1gg3A01
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	29 — PH-domain like
Homologous superfamily homologous superfamily	30 — Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)

Domain ID domain_id	1gg3A02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Domain ID domain_id	1gg3A03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	80 — Acyl-CoA Binding Protein
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1gg3B01
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	29 — PH-domain like
Homologous superfamily homologous superfamily	30 — Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)

Domain ID domain_id	1gg3B02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Domain ID domain_id	1gg3B03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	80 — Acyl-CoA Binding Protein
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1gg3C01
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	29 — PH-domain like
Homologous superfamily homologous superfamily	30 — Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)

Domain ID domain_id	1gg3C02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	20 — Ubiquitin-like (UB roll)
Homologous superfamily homologous superfamily	90 — Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Domain ID domain_id	1gg3C03
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	80 — Acyl-CoA Binding Protein
Homologous superfamily homologous superfamily	10 —

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Unit-cell length a length_a	163.900 Å
Unit-cell length b length_b	106.500 Å
Unit-cell length c length_c	93.500 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	95.50 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	20.000 Å
R factor r_factor	0.2260
R_work r_work	0.2260
R_free r_free	0.2760

Description description	ERYTHROID MEMBRANE PROTEIN 4.1R
Molecular weight formula_weight	32362.3 kDa
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	6837

CRYSTAL STRUCTURE OF THE PROTEIN 4.1R MEMBRANE BINDING DOMAIN

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

ERYTHROID MEMBRANE PROTEIN 4.1R

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

1gg3__assembly_1__model_1

1gg3__assembly_1__model_1 | I(q)

1gg3__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (9 domains)

CATH v4.4 (9 domains)

7. Citations (1)

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

CRYSTAL STRUCTURE OF THE PROTEIN 4.1R MEMBRANE BINDING DOMAIN

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

ERYTHROID MEMBRANE PROTEIN 4.1R

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

1gg3__assembly_1__model_1

1gg3__assembly_1__model_1 | I(q)

1gg3__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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

6. Fold Classification (SCOP + CATH) 18 domains

SCOP 2.08 (9 domains)

CATH v4.4 (9 domains)

7. Citations (1)