2gjx

Crystallographic structure of human beta-Hexosaminidase A

Method: X-RAY DIFFRACTION

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

Beta-hexosaminidase alpha chain

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase beta chain × 1 （P07686） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 3 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 1 water × 2	Consistent with protein count
2	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase beta chain × 1 （P07686） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 1 water × 2	Consistent with protein count
3	Other combination	Heteromer	Protein 2 其他Polymer 2	Beta-hexosaminidase beta chain × 1 （P07686） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 2	Consistent with protein count
4	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase beta chain × 1 （P07686） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 3 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 2 water × 2	Consistent with protein count
5	Other combination	Heteromer	Protein 4 其他Polymer 6	Beta-hexosaminidase beta chain × 2 （P07686） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 4 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SULFATE ION × 2 water × 4	Consistent with protein count
6	Other combination	Heteromer	Protein 4 其他Polymer 5	Beta-hexosaminidase beta chain × 2 （P07686） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 5 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SULFATE ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HEXA_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–507； UniProt 23–529 Author chain D； PDBConstruct 1–507； UniProt 23–529 Author chain E； PDBConstruct 1–507； UniProt 23–529 Author chain H； PDBConstruct 1–507； UniProt 23–529

Beta-hexosaminidase beta chain

OrganismNot specified

UniProt P07686

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase alpha chain × 1 （P06865） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 3 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 1 water × 2	Consistent with protein count
2	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase alpha chain × 1 （P06865） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 1 water × 2	Consistent with protein count
3	Other combination	Heteromer	Protein 2 其他Polymer 2	Beta-hexosaminidase alpha chain × 1 （P06865） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 2	Consistent with protein count
4	Other combination	Heteromer	Protein 2 其他Polymer 3	Beta-hexosaminidase alpha chain × 1 （P06865） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 3 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 2 water × 2	Consistent with protein count
5	Other combination	Heteromer	Protein 4 其他Polymer 6	Beta-hexosaminidase alpha chain × 2 （P06865） beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 4 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 2 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SULFATE ION × 2 water × 4	Consistent with protein count
6	Other combination	Heteromer	Protein 4 其他Polymer 5	Beta-hexosaminidase alpha chain × 2 （P06865） 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 5 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 SULFATE ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	HEXB_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–507； UniProt 50–556 Author chain C； PDBConstruct 1–507； UniProt 50–556 Author chain F； PDBConstruct 1–507； UniProt 50–556 Author chain G； PDBConstruct 1–507； UniProt 50–556

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	2gjx
Deposition date deposition_date	2006-03-31
Structure title title	Crystallographic structure of human beta-Hexosaminidase A
Keywords keywords	beta-hexosaminidase A, glycosidase, Tay-Sachs disease, GM2 ganglisode, Tim barrel, HYDROLASE; HYDROLASE
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.

2gjx__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2gjx__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2gjx__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	32.85 Å
Rg (electron density)	32.10 Å
Total Rg	32.85 Å
Atom count	8009
Residues	973
Excluded volume	142710 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2gjx__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2gjx__assembly_2__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`2gjx__assembly_3__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`2gjx__assembly_4__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
5	1	`2gjx__assembly_5__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
6	1	`2gjx__assembly_6__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 (7)

Entity 1 Entity 1 polymer

Description description	Beta-hexosaminidase alpha chain
Molecular weight formula_weight	58416.7 kDa
EC 编号 ec_number	3.2.1.52
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,D,E,H
Atom count atom_count	32132

LWPWPQNFQTSDQRYVLYPNNFQFQYDVSSAAQPGCSVLDEAFQRYRDLLFGSGSWPRPYLTGKRHTLEKNVLVVSVVTPGCNQLPTLESVENYTLTINDDQCLLLSETVWGALRGLETFSQLVWKSAEGTFFINKTEIEDFPRFPHRGLLLDTSRHYLPLSSILDTLDVMAYNKLNVFHWHLVDDPSFPYESFTFPELMRKGSYNPVTHIYTAQDVKEVIEYARLRGIRVLAEFDTPGHTLSWGPGIPGLLTPCYSGSEPSGTFGPVNPSLNNTYEFMSTFFLEVSSVFPDFYLHLGGDEVDFTCWKSNPEIQDFMRKKGFGEDFKQLESFYIQTLLDIVSSYGKGYVVWQEVFDNKVKIQPDTIIQVWREDIPVNYMKELELVTKAGFRALLSAPWYLNRISYGPDWKDFYVVEPLAFEGTPEQKALVIGGEACMWGEYVDNTNLVPRLWPRAGAVAERLWSNKLTSDLTFAYERLSHFRCELLRRGVQAQPLNVGFCEQEFEQT

Entity 2 Entity 2 polymer

Description description	Beta-hexosaminidase beta chain
Molecular weight formula_weight	58184.9 kDa
EC 编号 ec_number	3.2.1.52
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,C,F,G

AKPGPALWPLPLSVKMTPNLLHLAPENFYISHSPNSTAGPSCTLLEEAFRRYHGYIFGFYKWHHEPAEFQAKTQVQQLLVSITLQSECDAFPNISSDESYTLLVKEPVAVLKANRVWGALRGLETFSQLVYQDSYGTFTINESTIIDSPRFSHRGILIDTSRHYLPVKIILKTLDAMAFNKFNVLHWHIVDDQSFPYQSITFPELSNKGSYSLSHVYTPNDVRMVIEYARLRGIRVLPEFDTPGHTLSWGKGQKDLLTPCYSRQNKLDSFGPINPTLNTTYSFLTTFFKEISEVFPDQFIHLGGDEVEFKCWESNPKIQDFMRQKGFGTDFKKLESFYIQKVLDIIATINKGSIVWQEVFDDKAKLAPGTIVEVWKDSAYPEELSRVTASGFPVILSAPWYLDLISYGQDWRKYYKVEPLDFGGTQKQKQLFIGGEACLWGEYVDATNLTPRLWPRASAVGERLWSSKDVRDMDDAYDRLTRHRCRMVERGIAAQPLYAGYCNHENM

Entity 3 Entity 3 branched

Description description	beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	586.5 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 branched

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	424.4 kDa
Source method src_method	syn
Copy count entity_count	7

Entity 5 Entity 5 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 6 Entity 6 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	148

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6. Fold Classification (SCOP + CATH) 32 domains

SCOP 2.08 (16 domains)

Domain ID domain_id	d2gjxa1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxa2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxb1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxc1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxd1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxe1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxe2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxf1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxf2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxg1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxg2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

Domain ID domain_id	d2gjxh1
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamily	c.1.8 — (Trans)glycosidases
Family Family family	c.1.8.6 — beta-N-acetylhexosaminidase catalytic domain

Domain ID domain_id	d2gjxh2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.2 — beta-N-acetylhexosaminidase-like domain
Family Family family	d.92.2.1 — beta-N-acetylhexosaminidase domain

CATH v4.4 (16 domains)

Domain ID domain_id	2gjxA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxA02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxB02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxC02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxD02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxE02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxF02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxG01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxG02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

Domain ID domain_id	2gjxH01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	379 — Chitobiase; domain 2
Homologous superfamily homologous superfamily	10 — Chitobiase/beta-hexosaminidase domain 2-like

Domain ID domain_id	2gjxH02
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	20 — TIM Barrel
Homologous superfamily homologous superfamily	80 — Glycosidases

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Unit-cell length a length_a	321.091 Å
Unit-cell length b length_b	110.536 Å
Unit-cell length c length_c	129.668 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.90 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

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	39.870 Å
R factor r_factor	0.2697
R_work r_work	0.2687
R_free r_free	0.2882

Crystallographic structure of human beta-Hexosaminidase A

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

Beta-hexosaminidase alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Beta-hexosaminidase beta chain

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

2gjx__assembly_2__model_1

2gjx__assembly_2__model_1 | I(q)

2gjx__assembly_2__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 (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 branched

Entity 4 Entity 4 branched

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 32 domains

SCOP 2.08 (16 domains)

CATH v4.4 (16 domains)

7. Citations (1)

Crystallographic structure of human beta-Hexosaminidase A

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

Beta-hexosaminidase 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

Beta-hexosaminidase beta 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

2gjx__assembly_2__model_1

2gjx__assembly_2__model_1 | I(q)

2gjx__assembly_2__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 (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 branched

Entity 4 Entity 4 branched

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 32 domains

SCOP 2.08 (16 domains)

CATH v4.4 (16 domains)

7. Citations (1)