5eln

Crystal Structure of Lysyl-tRNA Synthetase from Cryptosporidium parvum complexed with L-lysine

Method: X-RAY DIFFRACTION

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

Lysine--tRNA ligase

Cryptosporidium parvum (strain Iowa II)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	LYSINE × 2 1,2-ETHANEDIOL × 6 water × 2	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 2	LYSINE × 2 1,2-ETHANEDIOL × 3 GLYCEROL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q5CR27_CRYPI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 22–535； UniProt 46–559 Author chain B； PDBConstruct 22–535； UniProt 46–559 Author chain C； PDBConstruct 22–535； UniProt 46–559 Author chain D； PDBConstruct 22–535； UniProt 46–559

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	5eln
Deposition date deposition_date	2015-11-04
Structure title title	Crystal Structure of Lysyl-tRNA Synthetase from Cryptosporidium parvum complexed with L-lysine
Keywords keywords	;SSGCID, Lysine--tRNA ligase, Cryptosporidium parvum, ATP binding, aminoacylation, Structural Genomics, Seattle Structural Genomics Center for Infectious Disease, LIGASE ;; LIGASE
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.

5eln__assembly_1__model_1

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

Download this curve (.dat)

5eln__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

5eln__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	32.76 Å
Rg (electron density)	31.91 Å
Total Rg	32.53 Å
Atom count	8056
Residues	1002
Excluded volume	144090 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`5eln__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`5eln__assembly_2__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 (5)

Entity 1 Entity 1 polymer

Description description	Lysine--tRNA ligase
Molecular weight formula_weight	61459.1 kDa
EC 编号 ec_number	6.1.1.6
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	18253

MAHHHHHHMGTLEAQTQGPGSHYTDNRYKMMECIKDAGRPFYPHKFKISMSLPAYALKYGNVENGYIDKDTTLSLSGRVTSIRSSSSKLIFYDIFCEEQKVQIIANIMEHDISTGEFSVSHSEIRRGDVVGFTGFPGKSKRGELSLFSKSVVLLSPCYHMLPTAISGLKDQEVRYRQRYLDLMLNEESRKVFKLRSRAIKYIRNYFDRLGFLEVETPMLNMIYGGAAARPFITYHNELETQLYMRIAPELYLKQLIVGGLDKVYEIGKNFRNEGIDLTHNPEFTAMEFYMAYADYYDLMDLTEELISGLVLEIHGSLKIPYHPDGPEGKCIEIDFTTPWKRFSFVEEIESGLGEKLKRPLDSQENIDFMVEMCEKHEIELPHPRTAAKLLDKLAGHFVETKCTNPSFIIDHPQTMSPLAKWHREKPEMTERFELFVLGKELCNAYTELNEPLQQRKFFEQQADAKASGDVEACPIDETFCLALEHGLPPTGGWGLGIDRLIMFLADKNNIKEVILFPAMRNVKQNAQHSNQHSGN

Source Source

Source organism organism	Cryptosporidium parvum (strain Iowa II)
NCBI taxonomy ID ncbi_taxonomy_id	353152
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	LYSINE
Molecular weight formula_weight	147.2 kDa
Source method src_method	syn
Copy count entity_count	4

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	9

Entity 4 Entity 4 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 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	1942

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6. Fold Classification (SCOP + CATH) 20 domains

SCOP 2.08 (12 domains)

Domain ID domain_id	d5elna1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.4 — Nucleic acid-binding proteins
Family Family family	b.40.4.0 — automated matches

Domain ID domain_id	d5elna2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.0 — automated matches

Domain ID domain_id	d5elna3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d5elnb1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.4 — Nucleic acid-binding proteins
Family Family family	b.40.4.0 — automated matches

Domain ID domain_id	d5elnb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.0 — automated matches

Domain ID domain_id	d5elnb3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d5elnc1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.4 — Nucleic acid-binding proteins
Family Family family	b.40.4.0 — automated matches

Domain ID domain_id	d5elnc2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.0 — automated matches

Domain ID domain_id	d5elnc3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

Domain ID domain_id	d5elnd1
Class class	b — All beta proteins
Fold Fold fold	b.40 — OB-fold
Superfamily Superfamily superfamily	b.40.4 — Nucleic acid-binding proteins
Family Family family	b.40.4.0 — automated matches

Domain ID domain_id	d5elnd2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.104 — Class II aaRS and biotin synthetases
Superfamily Superfamily superfamily	d.104.1 — Class II aaRS and biotin synthetases
Family Family family	d.104.1.0 — automated matches

Domain ID domain_id	d5elnd3
Class class	l — Artifacts
Fold Fold fold	l.1 — Tags
Superfamily Superfamily superfamily	l.1.1 — Tags
Family Family family	l.1.1.1 — Tags

CATH v4.4 (8 domains)

Domain ID domain_id	5elnA01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	5elnA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	5elnB01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	5elnB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	5elnC01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	5elnC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

Domain ID domain_id	5elnD01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	5elnD02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	930 — BirA Bifunctional Protein; domain 2
Homologous superfamily homologous superfamily	10 — Bira Bifunctional Protein; Domain 2

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Unit-cell length a length_a	72.920 Å
Unit-cell length b length_b	119.450 Å
Unit-cell length c length_c	143.630 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.31 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	19.980 Å
R factor r_factor	0.1560
R_work r_work	0.1540
R_free r_free	0.1920

Crystal Structure of Lysyl-tRNA Synthetase from Cryptosporidium parvum complexed with L-lysine

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

Lysine--tRNA ligase

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

5eln__assembly_1__model_1

5eln__assembly_1__model_1 | I(q)

5eln__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) 20 domains

SCOP 2.08 (12 domains)

CATH v4.4 (8 domains)

7. Citations (1)

Crystal Structure of Lysyl-tRNA Synthetase from Cryptosporidium parvum complexed with L-lysine

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

Lysine--tRNA ligase

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

5eln__assembly_1__model_1

5eln__assembly_1__model_1 | I(q)

5eln__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) 20 domains

SCOP 2.08 (12 domains)

CATH v4.4 (8 domains)

7. Citations (1)