SAXSdb — 1u30

▼

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

Alpha-amylase, pancreatic

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	2-acetamido-2-deoxy-beta-D-glucopyranose × 1 MALTOSYL-ALPHA (1,4)-(Z,3S,4S,5R,6R)-3,4,5-TRIHYDROXY-6-HYDROXYMETHYL-PIPERIDIN-2-ONE OXIME × 1 CALCIUM ION × 1 CHLORIDE ION × 1 (2S,3S,4R,5R)-6-(HYDROXYAMINO)-2-(HYDROXYMETHYL)-2,3,4,5-TETRAHYDROPYRIDINE-3,4,5-TRIOL × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	AMYP_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–496； UniProt 16–511

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	1u30
Deposition date deposition_date	2004-07-20
Structure title title	In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing maltosyl-alpha (1,4)-D-gluconhydroximo-1,5-lactam
Keywords keywords	glycosidase, human pancreatic alpha-amylase, acarbose, inhibitor, glucosidase, enzyme mechanism, HYDROLASE; HYDROLASE
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.

1u30__assembly_1__model_1

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

Download this curve (.dat)

1u30__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1u30__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.04 Å
Rg (electron density)	22.97 Å
Total Rg	23.83 Å
Atom count	4009
Residues	495
Excluded volume	70259 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1u30__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 (7)

Entity 1 Entity 1 polymer

Description description	Alpha-amylase, pancreatic
Molecular weight formula_weight	55931.3 kDa
EC 编号 ec_number	3.2.1.1
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	4167

QYSPNTQQGRTSIVHLFEWRWVDIALECERYLAPKGFGGVQVSPPNENVAIYNPFRPWWERYQPVSYKLCTRSGNEDEFRNMVTRCNNVGVRIYVDAVINHMCGNAVSAGTSSTCGSYFNPGSRDFPAVPYSGWDFNDGKCKTGSGDIENYNDATQVRDCRLTGLLDLALEKDYVRSKIAEYMNHLIDIGVAGFRLDASKHMWPGDIKAILDKLHNLNSNWFPAGSKPFIYQEVIDLGGEPIKSSDYFGNGRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWGFVPSDRALVFVDNHDNQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWPRQFQNGNDVNDWVGPPNNNGVIKEVTINPDTTCGNDWVCEHRWRQIRNMVIFRNVVDGQPFTNWYDNGSNQVAFGRGNRGFIVFNNDDWSFSLTLQTGLPAGTYCDVISGDKINGNCTGIKIYVSDDGKAHFSISNSAEDPFIAIHAESKL

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Pichia pastoris

Entity 2 Entity 2 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	MALTOSYL-ALPHA (1,4)-(Z,3S,4S,5R,6R)-3,4,5-TRIHYDROXY-6-HYDROXYMETHYL-PIPERIDIN-2-ONE OXIME
Molecular weight formula_weight	516.5 kDa
Source method src_method	man
Copy count entity_count	1

Entity 4 Entity 4 non-polymer

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

Entity 5 Entity 5 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	(2S,3S,4R,5R)-6-(HYDROXYAMINO)-2-(HYDROXYMETHYL)-2,3,4,5-TETRAHYDROPYRIDINE-3,4,5-TRIOL
Molecular weight formula_weight	192.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	158

▼

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1u30a1
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	d1u30a2
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 (2 domains)

Domain ID domain_id	1u30A01
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	1u30A02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1180 — Golgi alpha-mannosidase II

▶

Unit-cell length a length_a	52.260 Å
Unit-cell length b length_b	68.630 Å
Unit-cell length c length_c	131.400 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	10.000 Å
R factor r_factor	0.1820
R_work r_work	0.1750
R_free r_free	0.1950

In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing maltosyl-alpha (1,4)-D-gluconhydroximo-1,5-lactam

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

Alpha-amylase, pancreatic

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

1u30__assembly_1__model_1

1u30__assembly_1__model_1 | I(q)

1u30__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 (7)

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 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

In situ extension as an approach for identifying novel alpha-amylase inhibitors, structure containing maltosyl-alpha (1,4)-D-gluconhydroximo-1,5-lactam

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

Alpha-amylase, pancreatic

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

1u30__assembly_1__model_1

1u30__assembly_1__model_1 | I(q)

1u30__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 (7)

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 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)