SAXSdb — 1k1w

▼

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

4-ALPHA-GLUCANOTRANSFERASE

Thermococcus litoralis

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	alpha-D-glucopyranose × 1 CALCIUM ION × 1 SULFATE ION × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MALQ_THELI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–659； UniProt 1–659

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	1k1w
Deposition date deposition_date	2001-09-26
Structure title title	Crystal structure of 4-alpha-glucanotransferase from thermococcus litoralis
Keywords keywords	4-ALPHA-GLUCANOTRANSFERASE, SELENO-METHIONINE, TRANSFERASE; TRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

1k1w__assembly_1__model_1

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

Download this curve (.dat)

1k1w__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1k1w__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.66 Å
Rg (electron density)	27.18 Å
Total Rg	27.95 Å
Atom count	5292
Residues	615
Excluded volume	95159 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1k1w__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	4-ALPHA-GLUCANOTRANSFERASE
Molecular weight formula_weight	78645.6 kDa
EC 编号 ec_number	2.4.1.25
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	5360

MERINFIFGIHNHQPLGNFGWVFEEAYNRSYRPFMEILEEFPEMKVNVHFSGPLLEWIEENKPDYLDLLRSLIKRGQLEIVVAGFYEPVLAAIPKEDRLVQIEMLKDYARKLGYDAKGVWLTERVWQPELVKSLREAGIEYVVVDDYHFMSAGLSKEELFWPYYTEDGGEVITVFPIDEKLRYLIPFRPVKKTIEYLESLTSDDPSKVAVFHDDGEKFGVWPGTYEWVYEKGWLREFFDAITSNEKINLMTYSEYLSKFTPRGLVYLPIASYFEMSEWSLPAKQAKLFVEFVEQLKEEGKFEKYRVFVRGGIWKNFFFKYPESNFMHKRMLMVSKAVRDNPEARKYILKAQCNDAYWHGVFGGIYLPHLRRTVWENIIKAQRYLKPENKILDVDFDGRAEIMVENDGFIATIKPHYGGSIFELSSKRKAVNYNDVLPRRWEHYHEVPEATKPEKESEEGIASIHELGKQIPEEIRRELAYDWQLRAILQDHFIKPEETLDNYRLVKYHELGDFVNQPYEYEMIENGVKLWREGGVYAEEKIPARVEKKIELTEDGFIAKYRVLLEKPYKALFGVEINLAVHSVMEKPEEFEAKEFEVNDPYGIGKVRIELDKAAKVWKFPIKTLSQSEAGWDFIQQGVSYTMLFPIEKELEFTVRFREL

Source Source

Source organism organism	Thermococcus litoralis
NCBI taxonomy ID ncbi_taxonomy_id	2265
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	alpha-D-glucopyranose
Molecular weight formula_weight	180.2 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	68

▼

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d1k1wa1
Class class	a — All alpha proteins
Fold Fold fold	a.8 — immunoglobulin/albumin-binding domain-like
Superfamily Superfamily superfamily	a.8.3 — Families 57/38 glycoside transferase middle domain
Family Family family	a.8.3.2 — 4-alpha-glucanotransferase, domain 2

Domain ID domain_id	d1k1wa2
Class class	b — All beta proteins
Fold Fold fold	b.30 — Supersandwich
Superfamily Superfamily superfamily	b.30.5 — Galactose mutarotase-like
Family Family family	b.30.5.8 — 4-alpha-glucanotransferase, C-terminal domain

Domain ID domain_id	d1k1wa3
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.6 — 7-stranded beta/alpha barrel
Superfamily Superfamily superfamily	c.6.2 — Glycoside hydrolase/deacetylase
Family Family family	c.6.2.2 — 4-alpha-glucanotransferase, N-terminal domain

CATH v4.4 (2 domains)

Domain ID domain_id	1k1wA01
Class class	3 — Alpha Beta
Architecture architecture	20 — Alpha-Beta Barrel
Topology topology	110 — 7-stranded beta/alpha barrel
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	1k1wA02
Class class	2 — Mainly Beta
Architecture architecture	70 — Distorted Sandwich
Topology topology	98 — Beta-galactosidase; Chain A, domain 5
Homologous superfamily homologous superfamily	10 —

▶

Unit-cell length a length_a	124.940 Å
Unit-cell length b length_b	124.940 Å
Unit-cell length c length_c	246.960 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 64 2 2
Space-group number int_tables_number	181
Crystal system crystal_system	—

Resolution resolution	2.800 Å
Low-resolution limit resolution_low	17.880 Å
R factor r_factor	0.2240
R_work r_work	0.2210
R_free r_free	0.2890

Crystal structure of 4-alpha-glucanotransferase from thermococcus litoralis

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

4-ALPHA-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

1k1w__assembly_1__model_1

1k1w__assembly_1__model_1 | I(q)

1k1w__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal structure of 4-alpha-glucanotransferase from thermococcus litoralis

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

4-ALPHA-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

1k1w__assembly_1__model_1

1k1w__assembly_1__model_1 | I(q)

1k1w__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

CATH v4.4 (2 domains)

7. Citations (1)