SAXSdb — 9wqt

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

Isoleucine--tRNA ligase, cytoplasmic

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	ISOLEUCINE × 1 1,2-ETHANEDIOL × 3 ;(2E,4S,5S,6E,8E)-10-[(2S,3R,6S,8R,9S)-3-butyl-9-methyl-2-[(1E,3E)-3-methyl-5-oxidanyl-5-oxidanylidene-penta-1,3-dienyl]-3-(4-oxidanyl-4-oxidanylidene-butanoyl)oxy-1,7-dioxaspiro[5.5]undecan-8-yl]-4,8-dimethyl-5-oxidanyl-deca-2,6,8-trienoic acid ; × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SYIC_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–984； UniProt 1–984

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	9wqt
Deposition date deposition_date	2025-09-11
Last revision last_revision	2026-04-08
Structure title title	Crystal structure of Saccharomyces cerevisiae isoleucyl-tRNA synthetase in complex with reveromycin A and isoleucine
Keywords keywords	isoleucyl-tRNA synthetase, reveromycin, 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.

9wqt__assembly_1__model_1

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

Download this curve (.dat)

9wqt__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9wqt__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.18 Å
Rg (electron density)	36.98 Å
Total Rg	37.42 Å
Atom count	7493
Residues	919
Excluded volume	134120 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9wqt__assembly_1__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 (5)

Entity 1 Entity 1 polymer

Description description	Isoleucine--tRNA ligase, cytoplasmic
Molecular weight formula_weight	113864.7 kDa
EC 编号 ec_number	6.1.1.5
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	8157

MSESNAHFSFPKEEEKVLSLWDEIDAFHTSLELTKDKPEFSFFDGPPFATGTPHYGHILASTIKDIVPRYATMTGHHVERRFGWDTHGVPIEHIIDKKLGITGKDDVFKYGLENYNNECRSIVMTYASDWRKTIGRLGRWIDFDNDYKTMYPSFMESTWWAFKQLHEKGQVYRGFKVMPYSTGLTTPLSNFEAQQNYKDVNDPAVTIGFNVIGQEKTQLVAWTTTPWTLPSNLSLCVNADFEYVKIYDETRDRYFILLESLIKTLYKKPKNEKYKIVEKIKGSDLVGLKYEPLFPYFAEQFHETAFRVISDDYVTSDSGTGIVHNAPAFGEEDNAACLKNGVISEDSVLPNAIDDLGRFTKDVPDFEGVYVKDADKLIIKYLTNTGNLLLASQIRHSYPFCWRSDTPLLYRSVPAWFVRVKNIVPQMLDSVMKSHWVPNTIKEKRFANWIANARDWNVSRNRYWGTPIPLWVSDDFEEVVCVGSIKELEELTGVRNITDLHRDVIDKLTIPSKQGKGDLKRIEEVFDCWFESGSMPYASQHYPFENTEKFDERVPANFISEGLDQTRGWFYTLAVLGTHLFGSVPYKNVIVSGIVLAADGRKMSKSLKNYPDPSIVLNKYGADALRLYLINSPVLKAESLKFKEEGVKEVVSKVLLPWWNSFKFLDGQIALLKKMSNIDFQYDDSVKSDNVMDRWILASMQSLVQFIHEEMGQYKLYTVVPKLLNFIDELTNWYIRFNRRRLKGENGVEDCLKALNSLFDALFTFVRAMAPFTPFLSESIYLRLKEYIPEAVLAKYGKDGRSVHFLSYPVVKKEYFDEAIETAVSRMQSVIDLGRNIREKKTISLKTPLKTLVILHSDESYLKDVEALKNYIIEELNVRDVVITSDEAKYGVEYKAVADWPVLGKKLKKDAKKVKDALPSVTSEQVREYLESGKLEVAGIELVKGDLNAIRGLPESAVQAGQETRTDQDVLIIMDTNIYSELKSHHHHHH

Source Source

Source organism organism	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Common name common_name	;Baker's yeast ;
NCBI taxonomy ID ncbi_taxonomy_id	559292
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	ISOLEUCINE
Molecular weight formula_weight	131.2 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	3

Entity 4 Entity 4 non-polymer

Description description	;(2E,4S,5S,6E,8E)-10-[(2S,3R,6S,8R,9S)-3-butyl-9-methyl-2-[(1E,3E)-3-methyl-5-oxidanyl-5-oxidanylidene-penta-1,3-dienyl]-3-(4-oxidanyl-4-oxidanylidene-butanoyl)oxy-1,7-dioxaspiro[5.5]undecan-8-yl]-4,8-dimethyl-5-oxidanyl-deca-2,6,8-trienoic acid ;
Molecular weight formula_weight	660.8 kDa
Source method src_method	nat
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	608

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Unit-cell length a length_a	170.811 Å
Unit-cell length b length_b	65.042 Å
Unit-cell length c length_c	142.109 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	107.79 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	1.900 Å
Low-resolution limit resolution_low	47.880 Å
R factor r_factor	0.1943
R_work r_work	0.1930
R_free r_free	0.2195

Crystal structure of Saccharomyces cerevisiae isoleucyl-tRNA synthetase in complex with reveromycin A and isoleucine

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

Isoleucine--tRNA ligase, cytoplasmic

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

9wqt__assembly_1__model_1

9wqt__assembly_1__model_1 | I(q)

9wqt__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

7. Citations (1)

Crystal structure of Saccharomyces cerevisiae isoleucyl-tRNA synthetase in complex with reveromycin A and isoleucine

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

Isoleucine--tRNA ligase, cytoplasmic

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

9wqt__assembly_1__model_1

9wqt__assembly_1__model_1 | I(q)

9wqt__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

7. Citations (1)