SAXSdb — 1njc

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

THYMIDYLATE SYNTHASE

Lactobacillus casei

State in the Current Structure

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

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TYSY_LACCA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–316； UniProt 1–316

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	1njc
Deposition date deposition_date	1996-01-23
Structure title title	THYMIDYLATE SYNTHASE, MUTATION, N229D WITH 2'-DEOXYCYTIDINE 5'-MONOPHOSPHATE (DCMP)
Keywords keywords	TRANSFERASE, METHYLTRANSFERASE, NUCLEOTIDE BIOSYNTHESIS, TRANSFERASE (METHYLTRANSFERASE); TRANSFERASE (METHYLTRANSFERASE)
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.

1njc__assembly_1__model_1

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

Download this curve (.dat)

1njc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1njc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	27.27 Å
Rg (electron density)	26.09 Å
Total Rg	26.95 Å
Atom count	5226
Residues	632
Excluded volume	92632 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1njc__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	THYMIDYLATE SYNTHASE
Molecular weight formula_weight	36631.4 kDa
EC 编号 ec_number	2.1.1.45
Mutation mutation	N229D
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	2699

MLEQPYLDLAKKVLDEGHFKPDRTHTGTYSIFGHQMRFDLSKGFPLLTTKKVPFGLIKSELLWFLHGDTNIRFLLQHRNHIWDEWAFEKWVKSDEYHGPDMTDFGHRSQKDPEFAAVYHEEMAKFDDRVLHDDAFAAKYGDLGLVYGSQWRAWHTSKGDTIDQLGDVIEQIKTHPYSRRLIVSAWNPEDVPTMALPPCHTLYQFYVNDGKLSLQLYQRSADIFLGVPFDIASYALLTHLVAHECGLEVGEFIHTFGDAHLYVNHLDQIKEQLSRTPRPAPTLQLNPDKHDIFDFDMKDIKLLNYDPYPAIKAPVAV

Source Source

Source organism organism	Lactobacillus casei
NCBI taxonomy ID ncbi_taxonomy_id	1582
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	2'-DEOXYCYTIDINE-5'-MONOPHOSPHATE
Molecular weight formula_weight	307.2 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	86

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_id	d1njca_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.117 — Thymidylate synthase/dCMP hydroxymethylase
Superfamily Superfamily superfamily	d.117.1 — Thymidylate synthase/dCMP hydroxymethylase
Family Family family	d.117.1.1 — Thymidylate synthase/dCMP hydroxymethylase

CATH v4.4 (1 domains)

Domain ID domain_id	1njcA00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	572 — Thymidylate Synthase; Chain A
Homologous superfamily homologous superfamily	10 — Thymidylate synthase/dCMP hydroxymethylase domain

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Unit-cell length a length_a	79.200 Å
Unit-cell length b length_b	79.200 Å
Unit-cell length c length_c	229.600 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 61 2 2
Space-group number int_tables_number	178
Crystal system crystal_system	—

Resolution resolution	2.500 Å
Low-resolution limit resolution_low	50.000 Å
R factor r_factor	0.1840
R_work r_work	0.1840
R_free r_free	—

THYMIDYLATE SYNTHASE, MUTATION, N229D WITH 2'-DEOXYCYTIDINE 5'-MONOPHOSPHATE (DCMP)

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

THYMIDYLATE SYNTHASE

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

1njc__assembly_1__model_1

1njc__assembly_1__model_1 | I(q)

1njc__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (5)

THYMIDYLATE SYNTHASE, MUTATION, N229D WITH 2'-DEOXYCYTIDINE 5'-MONOPHOSPHATE (DCMP)

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

THYMIDYLATE SYNTHASE

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

1njc__assembly_1__model_1

1njc__assembly_1__model_1 | I(q)

1njc__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

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) 2 domains

SCOP 2.08 (1 domains)

CATH v4.4 (1 domains)

7. Citations (5)