SAXSdb — 2p2v

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

Alpha-2,3-sialyltransferase

Campylobacter jejuni

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	CHLORIDE ION × 4 1,2-ETHANEDIOL × 48 ;CYTIDINE-5'-MONOPHOSPHATE-3-FLUORO-N-ACETYL-NEURAMINIC ACID ; × 4 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q9RGF1_CAMJE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–288； UniProt 1–285

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	2p2v
Deposition date deposition_date	2007-03-07
Structure title title	Crystal structure analysis of monofunctional alpha-2,3-sialyltransferase Cst-I from Campylobacter jejuni
Keywords keywords	mixed alpha-beta, 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.

2p2v__assembly_1__model_1

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

Download this curve (.dat)

2p2v__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2p2v__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	36.22 Å
Rg (electron density)	35.09 Å
Total Rg	35.73 Å
Atom count	9452
Residues	1100
Excluded volume	170200 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2p2v__assembly_1__model_1`	tetrameric （4）	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	Alpha-2,3-sialyltransferase
Molecular weight formula_weight	33829.8 kDa
EC 编号 ec_number	2.4.99.-
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	2575

GSHMTRTRMENELIVSKNMQNIIIAGNGPSLKNINYKRLPREYDVFRCNQFYFEDKYYLGKKIKAVFFNPGVFLQQYHTAKQLILKNEYEIKNIFCSTFNLPFIESNDFLHQFYNFFPDAKLGYEVIENLKEFYAYIKYNEIYFNKRITSGVYMCAIAIALGYKTIYLCGIDFYEGDVIYPFEAMSTNIKTIFPGIKDFKPSNCHSKEYDIEALKLLKSIYKVNIYALCDDSILANHFPLSININNNFTLENKHNNSINDILLTDNTPGVSFYKNQLKADNKIMLNFY

Source Source

Source organism organism	Campylobacter jejuni
NCBI taxonomy ID ncbi_taxonomy_id	197
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

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

Entity 3 Entity 3 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	12

Entity 4 Entity 4 non-polymer

Description description	;CYTIDINE-5'-MONOPHOSPHATE-3-FLUORO-N-ACETYL-NEURAMINIC ACID ;
Molecular weight formula_weight	632.4 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	200

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d2p2va_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.130 — Alpha-2,3/8-sialyltransferase CstII
Superfamily Superfamily superfamily	c.130.1 — Alpha-2,3/8-sialyltransferase CstII
Family Family family	c.130.1.0 — automated matches

CATH v4.4 (1 domains)

Domain ID domain_id	2p2vA00
Class class	3 — Alpha Beta
Architecture architecture	90 — Alpha-Beta Complex
Topology topology	1480 — sialyltransferase cstii, chain A
Homologous superfamily homologous superfamily	10 — Alpha-2,3-sialyltransferase

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Unit-cell length a length_a	112.388 Å
Unit-cell length b length_b	112.388 Å
Unit-cell length c length_c	58.757 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	I 4
Space-group number int_tables_number	79
Crystal system crystal_system	—

Resolution resolution	1.850 Å
Low-resolution limit resolution_low	39.750 Å
R factor r_factor	0.2040
R_work r_work	0.2020
R_free r_free	0.2420

Crystal structure analysis of monofunctional alpha-2,3-sialyltransferase Cst-I from Campylobacter jejuni

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

Alpha-2,3-sialyltransferase

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

2p2v__assembly_1__model_1

2p2v__assembly_1__model_1 | I(q)

2p2v__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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)

Crystal structure analysis of monofunctional alpha-2,3-sialyltransferase Cst-I from Campylobacter jejuni

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

Alpha-2,3-sialyltransferase

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

2p2v__assembly_1__model_1

2p2v__assembly_1__model_1 | I(q)

2p2v__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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (1)