SAXSdb — 3kou

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

CD38 molecule

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Monomer	Protein 1 其他Polymer 1	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 SULFATE ION × 1 ;[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoylpyridin-1-ium-1yl)- 3-fluoro-,4- hydroxyoxolan-2-yl]methyl phosphate ; × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	SULFATE ION × 1 ;[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoylpyridin-1-ium-1yl)- 3-fluoro-,4- hydroxyoxolan-2-yl]methyl phosphate ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9TTF5_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–247； UniProt 32–278 Author chain B； PDBConstruct 1–247； UniProt 32–278

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	3kou
Deposition date deposition_date	2009-11-13
Structure title title	Structural insights into the catalytic mechanism of CD38: Evidence for a conformationally flexible covalent enzyme-substrate complex.
Keywords keywords	CD38, CYCLIC ADP RIBOSE, ECTO-ADP-RIBOSYL CYCLASE, 2 GLYCOSIDASE, HYDROLASE, Glycosidase; 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.

3kou__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3kou__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3kou__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	19.67 Å
Rg (electron density)	18.51 Å
Total Rg	19.43 Å
Atom count	1948
Residues	238
Excluded volume	34126 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3kou__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3kou__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 (6)

Entity 1 Entity 1 polymer

Description description	CD38 molecule
Molecular weight formula_weight	28301.0 kDa
EC 编号 ec_number	3.2.2.5
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	4295

YKWHYSGLNRWHGAGSTADFQKIIQERCDTYTQTIRPGSRSRNCQAIRQAFMSAFISKDPCKATKEDYNSLINLAPPTVPCGQQVFWSKTKELAHEYAKRRRLMTLEDTLLGYLADGLRWCGEPGSSDLNIWSCPDWRKDCRTNYLSVFWEVLSERFAESACNTVRVVLNGSLENAFDSMSIFGRVEAPNLRPQVELEAWLVHDTGKPPSDSCSGSSIRKLKSILDGRNVKFRCMDNLSRDQFLQRS

Entity 2 Entity 2 branched

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	424.4 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	;[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoylpyridin-1-ium-1yl)- 3-fluoro-,4- hydroxyoxolan-2-yl]methyl phosphate ;
Molecular weight formula_weight	665.4 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 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 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	361

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3koua_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.14 — N-(deoxy)ribosyltransferase-like
Family Family family	c.23.14.0 — automated matches

Domain ID domain_id	d3koub_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.23 — Flavodoxin-like
Superfamily Superfamily superfamily	c.23.14 — N-(deoxy)ribosyltransferase-like
Family Family family	c.23.14.0 — automated matches

CATH v4.4 (4 domains)

Domain ID domain_id	3kouA01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	82 — ADP Ribosyl Cyclase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — ADP Ribosyl Cyclase; Chain A, domain 1

Domain ID domain_id	3kouA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

Domain ID domain_id	3kouB01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	82 — ADP Ribosyl Cyclase; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — ADP Ribosyl Cyclase; Chain A, domain 1

Domain ID domain_id	3kouB02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	720 — NAD(P)-binding Rossmann-like Domain

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Unit-cell length a length_a	46.721 Å
Unit-cell length b length_b	81.287 Å
Unit-cell length c length_c	150.909 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	8

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

Resolution resolution	1.780 Å
Low-resolution limit resolution_low	40.644 Å
R factor r_factor	0.2030
R_work r_work	0.1997
R_free r_free	0.2430

Structural insights into the catalytic mechanism of CD38: Evidence for a conformationally flexible covalent enzyme-substrate complex.

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

CD38 molecule

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

3kou__assembly_2__model_1

3kou__assembly_2__model_1 | I(q)

3kou__assembly_2__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)

Structural insights into the catalytic mechanism of CD38: Evidence for a conformationally flexible covalent enzyme-substrate complex.

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

CD38 molecule

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

3kou__assembly_2__model_1

3kou__assembly_2__model_1 | I(q)

3kou__assembly_2__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 branched

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (2 domains)

CATH v4.4 (4 domains)

7. Citations (1)