SAXSdb — 1k8q

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

Triacylglycerol lipase, gastric

Canis lupus familiaris

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 × 4 octyl beta-D-glucopyranoside × 1 UNDECYL-PHOSPHINIC ACID BUTYL ESTER × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	2-acetamido-2-deoxy-beta-D-glucopyranose × 4 octyl beta-D-glucopyranoside × 1 UNDECYL-PHOSPHINIC ACID BUTYL ESTER × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	LIPG_CANFA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–377； UniProt 20–396 Author chain B； PDBConstruct 1–377； UniProt 20–396

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	1k8q
Deposition date deposition_date	2001-10-25
Structure title title	CRYSTAL STRUCTURE OF DOG GASTRIC LIPASE IN COMPLEX WITH A PHOSPHONATE INHIBITOR
Keywords keywords	APHA BETA HYDROLASE FOLD, HYDROLASE; HYDROLASE
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.

1k8q__assembly_1__model_1

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

Download this curve (.dat)

1k8q__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1k8q__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	20.74 Å
Rg (electron density)	19.69 Å
Total Rg	20.72 Å
Atom count	3126
Residues	377
Excluded volume	55993 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1k8q__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1k8q__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 (5)

Entity 1 Entity 1 polymer

Description description	Triacylglycerol lipase, gastric
Molecular weight formula_weight	42933.9 kDa
EC 编号 ec_number	3.1.1.3
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	6634

AFGKLHPTNPEVTMNISQMITYWGYPAEEYEVVTEDGYILGIDRIPYGRKNSENIGRRPVAFLQHGLLASATNWISNLPNNSLAFILADAGYDVWLGNSRGNTWARRNLYYSPDSVEFWAFSFDEMAKYDLPATIDFILKKTGQDKLHYVGHSQGTTIGFIAFSTNPKLAKRIKTFYALAPVATVKYTETLINKLMLVPSFLFKLIFGNKIFYPHHFFDQFLATEVCSRETVDLLCSNALFIICGFDTMNLNMSRLDVYLSHNPAGTSVQNVLHWSQAVKSGKFQAFDWGSPVQNMMHYHQSMPPYYNLTDMHVPIAVWNGGNDLLADPHDVDLLLSKLPNLIYHRKIPPYNHLDFIWAMDAPQAVYNEIVSMMGTD

Source Source

Source organism organism	Canis lupus familiaris
Common name common_name	dog
NCBI taxonomy ID ncbi_taxonomy_id	9615
Host organism host_organism	Zea mays

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	8

Entity 3 Entity 3 non-polymer

Description description	octyl beta-D-glucopyranoside
Molecular weight formula_weight	292.4 kDa
Source method src_method	man
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	UNDECYL-PHOSPHINIC ACID BUTYL ESTER
Molecular weight formula_weight	276.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	382

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1k8qa_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.6 — Gastric lipase

Domain ID domain_id	d1k8qb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.69 — alpha/beta-Hydrolases
Superfamily Superfamily superfamily	c.69.1 — alpha/beta-Hydrolases
Family Family family	c.69.1.6 — Gastric lipase

CATH v4.4 (2 domains)

Domain ID domain_id	1k8qA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

Domain ID domain_id	1k8qB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1820 — Alpha/Beta hydrolase fold, catalytic domain

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Unit-cell length a length_a	61.209 Å
Unit-cell length b length_b	164.498 Å
Unit-cell length c length_c	177.156 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	16

Space group space_group	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	15.000 Å
R factor r_factor	—
R_work r_work	0.1965
R_free r_free	0.2572

CRYSTAL STRUCTURE OF DOG GASTRIC LIPASE IN COMPLEX WITH A PHOSPHONATE INHIBITOR

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

Triacylglycerol lipase, gastric

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

1k8q__assembly_1__model_1

1k8q__assembly_1__model_1 | I(q)

1k8q__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

CRYSTAL STRUCTURE OF DOG GASTRIC LIPASE IN COMPLEX WITH A PHOSPHONATE INHIBITOR

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

Triacylglycerol lipase, gastric

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

1k8q__assembly_1__model_1

1k8q__assembly_1__model_1 | I(q)

1k8q__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) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)