1iv8

Crystal Structure of Maltooligosyl trehalose synthase

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

MALTOOLIGOSYL TREHALOSE SYNTHASE

Sulfolobus acidocaldarius

UniProt Q53688

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q53688_SULAC
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–720; UniProt 1–720

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_id1iv8
Deposition date deposition_date2002-03-15
Structure title titleCrystal Structure of Maltooligosyl trehalose synthase
Keywords keywordsTREHALOSE SYNTHASE, BETA ALPHA BARREL, INTRAMOLECULAR TRANSGLUCOSYLATION, ISOMERASE; ISOMERASE
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.

1iv8__assembly_1__model_1

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

Download this curve (.dat)

1iv8__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1iv8__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)28.05 Å
Rg (electron density)27.15 Å
Total Rg28.09 Å
Atom count6013
Residues701
Excluded volume108110 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1iv8__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 (2)

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6. Fold Classification (SCOP + CATH) 7 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1iv8a1
Class classb — All beta proteins
Fold Fold foldb.71 — Glycosyl hydrolase domain
Superfamily Superfamily superfamilyb.71.1 — Glycosyl hydrolase domain
Family Family familyb.71.1.1 — alpha-Amylases, C-terminal beta-sheet domain
Domain ID domain_idd1iv8a2
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.1.8.1 — Amylase, catalytic domain

CATH v4.4 (5 domains)

Domain ID domain_id1iv8A01
Class class3 — Alpha Beta
Architecture architecture20 — Alpha-Beta Barrel
Topology topology20 — TIM Barrel
Homologous superfamily homologous superfamily80 — Glycosidases
Domain ID domain_id1iv8A02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology1590 — Maltooligosyl trehalose synthase, domain 2
Homologous superfamily homologous superfamily10 — Maltooligosyl trehalose synthase, domain 2
Domain ID domain_id1iv8A03
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily200 — Maltooligosyl trehalose synthase; domain 3
Domain ID domain_id1iv8A04
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily470 — Maltooligosyl trehalose synthase; domain 4
Domain ID domain_id1iv8A05
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily1180 — Golgi alpha-mannosidase II
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7. Citations (1)