1zy9

Crystal structure of Alpha-galactosidase (EC 3.2.1.22) (Melibiase) (tm1192) from Thermotoga maritima at 2.34 A resolution

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

alpha-galactosidase

Thermotoga maritima

UniProt O33835

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 1,2-ETHANEDIOL × 4 GLYCEROL × 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name O33835_THEMA
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 13–564; UniProt 1–552

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_id1zy9
Deposition date deposition_date2005-06-09
Structure title titleCrystal structure of Alpha-galactosidase (EC 3.2.1.22) (Melibiase) (tm1192) from Thermotoga maritima at 2.34 A resolution
Keywords keywords;tm1192, Alpha-galactosidase (EC 3.2.1.22) (Melibiase), Structural Genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI, HYDROLASE ;; HYDROLASE
Experimental Method methodX-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.

1zy9__assembly_1__model_1

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

Download this curve (.dat)

1zy9__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1zy9__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)23.79 Å
Rg (electron density)22.79 Å
Total Rg23.65 Å
Atom count4254
Residues517
Excluded volume76140 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1zy9__assembly_1__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 (4)

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6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd1zy9a1
Class classb — All beta proteins
Fold Fold foldb.30 — Supersandwich
Superfamily Superfamily superfamilyb.30.5 — Galactose mutarotase-like
Family Family familyb.30.5.11 — Glycosyl hydrolase family 31, N-terminal domain-like
Domain ID domain_idd1zy9a2
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.1 — TIM beta/alpha-barrel
Superfamily Superfamily superfamilyc.1.8 — (Trans)glycosidases
Family Family familyc.1.8.13 — Glycosyl hydrolase family 31 catalytic domain
Domain ID domain_idd1zy9a3
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id1zy9A02
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily70 — Aldolase class I
Domain ID domain_id1zy9A03
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily2760 —
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7. Citations (1)