1v3k

Crystal structure of F283Y mutant cyclodextrin glycosyltransferase

Method: X-RAY DIFFRACTION

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

Cyclomaltodextrin glucanotransferase

Bacillus sp.

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	CALCIUM ION × 2 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	CALCIUM ION × 2 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CDGT_BACS0
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–686； UniProt 28–713 Author chain B； PDBConstruct 1–686； UniProt 28–713

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	1v3k
Deposition date deposition_date	2003-11-03
Structure title title	Crystal structure of F283Y mutant cyclodextrin glycosyltransferase
Keywords keywords	CGTASE, CYCLODEXTRIN, TRANSFERASE; TRANSFERASE
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.

1v3k__assembly_1__model_1

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

Download this curve (.dat)

1v3k__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1v3k__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	26.63 Å
Rg (electron density)	25.49 Å
Total Rg	26.30 Å
Atom count	5315
Residues	686
Excluded volume	93405 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1v3k__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1v3k__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Description description	Cyclomaltodextrin glucanotransferase
Molecular weight formula_weight	75246.1 kDa
EC 编号 ec_number	2.4.1.19
Mutation mutation	F283Y
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	11435

APDTSVSNKQNFSTDVIYQIFTDRFSDGNPANNPTGAAFDGSCTNLRLYCGGDWQGIINKINDGYLTGMGITAIWISQPVENIYSVINYSGVNNTAYHGYWARDFKKTNPAYGTMQDFKNLIDTAHAHNIKVIIDFAPNHTSPASSDDPSFAENGRLYDNGNLLGGYTNDTQNLFHHYGGTDFSTIENGIYKNLYDLADLNHNNSSVDVYLKDAIKMWLDLGVDGIRVDAVKHMPFGWQKSFMATINNYKPVFTFGEWFLGVNEISPEYHQFANESGMSLLDYRFAQKARQVFRDNTDNMYGLKAMLEGSEVDYAQVNDQVTFIDNHDMERFHTSNGDRRKLEQALAFTLTSRGVPAIYYGSEQYMSGGNDPDNRARLPSFSTTTTAYQVIQKLAPLRKSNPAIAYGSTHERWINNDVIIYERKFGNNVAVVAINRNMNTPASITGLVTSLPRGSYNDVLGGILNGNTLTVGAGGAASNFTLAPGGTAVWQYTTDATTPIIGNVGPMMAKPGVTITIDGRGFGSGKGTVYFGTTAVTGADIVAWEDTQIQVKIPAVPGGIYDIRVANAAGAASNIYDNFEVLTGDQVTVRFVINNATTALGQNVFLTGNVSELGNWDPNNAIGPMYNQVVYQYPTWYYDVSVPAGQTIEFKFLKKQGSTVTWEGGANRTFTTPTSGTATVNVNWQP

Source Source

Source organism organism	Bacillus sp.
NCBI taxonomy ID ncbi_taxonomy_id	1410
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	805

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6. Fold Classification (SCOP + CATH) 16 domains

SCOP 2.08 (8 domains)

Domain ID domain_id	d1v3ka1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.2 — E-set domains of sugar-utilizing enzymes

Domain ID domain_id	d1v3ka2
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.1 — Starch-binding domain-like
Family Family family	b.3.1.1 — Starch-binding domain

Domain ID domain_id	d1v3ka3
Class class	b — All beta proteins
Fold Fold fold	b.71 — Glycosyl hydrolase domain
Superfamily Superfamily superfamily	b.71.1 — Glycosyl hydrolase domain
Family Family family	b.71.1.1 — alpha-Amylases, C-terminal beta-sheet domain

Domain ID domain_id	d1v3ka4
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.1.8.1 — Amylase, catalytic domain

Domain ID domain_id	d1v3kb1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.18 — E set domains
Family Family family	b.1.18.2 — E-set domains of sugar-utilizing enzymes

Domain ID domain_id	d1v3kb2
Class class	b — All beta proteins
Fold Fold fold	b.3 — Prealbumin-like
Superfamily Superfamily superfamily	b.3.1 — Starch-binding domain-like
Family Family family	b.3.1.1 — Starch-binding domain

Domain ID domain_id	d1v3kb3
Class class	b — All beta proteins
Fold Fold fold	b.71 — Glycosyl hydrolase domain
Superfamily Superfamily superfamily	b.71.1 — Glycosyl hydrolase domain
Family Family family	b.71.1.1 — alpha-Amylases, C-terminal beta-sheet domain

Domain ID domain_id	d1v3kb4
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.1.8.1 — Amylase, catalytic domain

CATH v4.4 (8 domains)

Domain ID domain_id	1v3kA01
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	1v3kA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1180 — Golgi alpha-mannosidase II

Domain ID domain_id	1v3kA03
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1v3kA04
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1v3kB01
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	1v3kB02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1180 — Golgi alpha-mannosidase II

Domain ID domain_id	1v3kB03
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1v3kB04
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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Unit-cell length a length_a	64.880 Å
Unit-cell length b length_b	74.430 Å
Unit-cell length c length_c	79.010 Å
Unit-cell angle α angle_alpha	85.15 °
Unit-cell angle β angle_beta	105.05 °
Unit-cell angle γ angle_gamma	101.02 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.1580
R_work r_work	0.1550
R_free r_free	0.2000

Crystal structure of F283Y mutant cyclodextrin glycosyltransferase

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

Cyclomaltodextrin glucanotransferase

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

1v3k__assembly_1__model_1

1v3k__assembly_1__model_1 | I(q)

1v3k__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (3)

Crystal structure of F283Y mutant cyclodextrin glycosyltransferase

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

Cyclomaltodextrin glucanotransferase

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

1v3k__assembly_1__model_1

1v3k__assembly_1__model_1 | I(q)

1v3k__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) 16 domains

SCOP 2.08 (8 domains)

CATH v4.4 (8 domains)

7. Citations (3)