SAXSdb — 1l4e

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

Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase

Salmonella enterica

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	ALPHA-RIBAZOLE-5'-PHOSPHATE × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	COBT_SALTY
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–356； UniProt 1–356

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	1l4e
Deposition date deposition_date	2002-03-06
Structure title title	The crystal structure of CobT complexed with alpha-ribazole-5'-phosphate
Keywords keywords	CobT, cobalamin synthetic enzyme, phosphoribosyltransferase, 5, 6-dimethylbenzimidazole, nicotinate mononucleotide, 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.

1l4e__assembly_1__model_1

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

Download this curve (.dat)

1l4e__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1l4e__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.39 Å
Rg (electron density)	26.51 Å
Total Rg	27.16 Å
Atom count	4918
Residues	694
Excluded volume	88201 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1l4e__assembly_1__model_1`	dimeric （2）	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	Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase
Molecular weight formula_weight	36675.6 kDa
EC 编号 ec_number	2.4.2.21
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	2566

MQTLHALLRDIPAPDAEAMARTQQHIDGLLKPPGSLGRLETLAVQLAGMPGLNGTPQVGEKAVLVMCADHGVWDEGVAVSPKIVTAIQAANMTRGTTGVCVLAAQAGAKVHVIDVGIDAEPIPGVVNMRVARGCGNIAVGPAMSRLQAEALLLEVSRYTCDLAQRGVTLFGVGELGMANTTPAAAMVSVFTGSDAKEVVGIGANLPPSRIDNKVDVVRRAIAINQPNPRDGIDVLSKVGGFDLVGMTGVMLGAARCGLPVLLDGFLSYSAALAACQIAPAVRPYLIPSHFSAEKGARIALAHLSMEPYLHMAMRLGEGSGAALAMPIVEAACAMFHNMGELAASNIVLPEGNANAT

Source Source

Source organism organism	Salmonella enterica
NCBI taxonomy ID ncbi_taxonomy_id	28901
Host organism host_organism	Salmonella enterica

Entity 2 Entity 2 non-polymer

Description description	ALPHA-RIBAZOLE-5'-PHOSPHATE
Molecular weight formula_weight	358.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	107

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6. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1l4ea_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.39 — Nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT)
Superfamily Superfamily superfamily	c.39.1 — Nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT)
Family Family family	c.39.1.1 — Nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT)

CATH v4.4 (2 domains)

Domain ID domain_id	1l4eA01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1610 — 5,6-Dimethylbenzimidazole Phosphoribosyltransferase; Chain: A; domain 1
Homologous superfamily homologous superfamily	10 — Nicotinate-nucleotide-dimethylbenzimidazole phosphoribosyltransferase (CobT), small domain

Domain ID domain_id	1l4eA02
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10210 — Nicotinate-nucleotide-dimethylbenzimidazole phosphoribosyltransferase (CobT), large domain

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Unit-cell length a length_a	71.920 Å
Unit-cell length b length_b	89.970 Å
Unit-cell length c length_c	47.610 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	500.000 Å
R factor r_factor	—
R_work r_work	0.1800
R_free r_free	0.2180

The crystal structure of CobT complexed with alpha-ribazole-5'-phosphate

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

Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase

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

1l4e__assembly_1__model_1

1l4e__assembly_1__model_1 | I(q)

1l4e__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) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)

The crystal structure of CobT complexed with alpha-ribazole-5'-phosphate

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

Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase

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

1l4e__assembly_1__model_1

1l4e__assembly_1__model_1 | I(q)

1l4e__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) 3 domains

SCOP 2.08 (1 domains)

CATH v4.4 (2 domains)

7. Citations (1)