SAXSdb — 5a5u

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

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	EUKARYOTIC INITIATION FACTOR 3 × 1 EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I × 1 （P40217）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	G1SZ03_RABIT
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 446–1121； UniProt 1–679

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I

OrganismNot specified

UniProt P40217

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	EUKARYOTIC INITIATION FACTOR 3 × 1 EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B × 1 （G1SZ03）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	EIF3I_YEAST
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain I； PDBConstruct 1–347； UniProt 1–347

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	5a5u
Deposition date deposition_date	2015-06-21
Structure title title	Structure of mammalian eIF3 in the context of the 43S preinitiation complex
Keywords keywords	TRANSLATION, EIF3, EIF3 OCTAMER CORE, MAMMALIAN PREINITIATION 34S COMPLEX, EIF3G/I/B, EIF3D; TRANSLATION
Experimental Method method	ELECTRON MICROSCOPY

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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.

5a5u__assembly_1__model_1

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

Download this curve (.dat)

5a5u__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

5a5u__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	38.74 Å
Rg (electron density)	38.76 Å
Total Rg	39.16 Å
Atom count	8124
Residues	1009
Excluded volume	143810 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`5a5u__assembly_1__model_1`	trimeric （3）	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	EUKARYOTIC INITIATION FACTOR 3
Molecular weight formula_weight	4613.7 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	8124

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 2 Entity 2 polymer

Description description	EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B
Molecular weight formula_weight	124402.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MLGAVKMEGHESSDWNSYYADTQEAYSSVPVSNMNSGLGSMNSMNTYMTMNTMTTSGNMTPASFNMSYANPGLGAGLSPGAVAGMPAGSAGAMNSMTAAGVTAMGTALSPGGMGAMGAQPAASMNGLGPYAAAMNPCMSPMAYAPSNLGRSRAGGGGDAKTFKRSYPHAKPPYSYISLITMAIQQAPSKMLTLSEIYQWIMDLFPYYRQNQQRWQNSIRHSLSFNDCFLKVPRSPDKPGKGSFWTLHPDSGNMFENGCYLRRQKRFKCEKQLALKEAGAPGAGAGGKKAAAVGAQASQAQLGEVAGPAPDTPAGTESPHSSASPCQEHKRVALGELKGSAAGAALSPPEPAPSPGQQQQQQPGAEPPPEEEPPRPAGAEDAAAEAAAEAGPEPDVRAEPAEAQEAASSPAEPPATLPAEQGEAPREQARDEPAPASEAEGSAAEAEPRAVENGDADEPSFSDPEDFVDDVSEEELLGDVLKDRPQEADGIDSVIVVDNVPQVGPDRLEKLKNVIHKIFSKFGKITNDFYPEEDGKTKGYIFLEYASPAHAVDAVKNADGYKLDKQHTFRVNLFTDFDKYMTISDEWDIPEKQPFKDLGNLRYWLEEAECRDQYSVIFESGDRTSIFWNDVKDPVSIEERARWTETYVRWSPKGTYLATFHQRGIALWGGEKFKQIQRFSHQGVQLIDFSPCERYLVTFSPLMDTQDDPQAIIIWDILTGHKKRGFHCESSAHWPIFKWSHDGKFFARMTLDTLSIYETPSMGLLDKKSLKISGIKDFSWSPGGNIIAFWVPEDKDIPARVTLMQLPSRQEIRVRNLFNVVDCKLHWQKNGDYLCVKVDRTPKGTQGVVTNFEIFRMREKQVPVDVVEMKETIIAFAWEPNGSKFAVLHGEAPRISVSFYHVKSNGKIELSKMFDKQQANTIFWSPQGQFVVLAGLRSMNGALAFVDTSDCTVMNIAEHYMASDVEWDPTGRYVVTSVSWWSHKVDNAYWLWTFQGRLLQKNNKDRFCQLLWRPRPPTLLSQEQIKQIKKDLKKYSKIFEQKDRLSQSKASKELVERRRAMMEDFRKYGKAAQELYVGQKNERLELRGGVDTDELDSNVDDWEEETIEFFVTEEVIPLGSQE

Entity 3 Entity 3 polymer

Description description	EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I
Molecular weight formula_weight	38803.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

MKAIKLTGHERPLTQVKYNKEGDLLFSCSKDSSASVWYSLNGERLGTLDGHTGTIWSIDVDCFTKYCVTGSADYSIKLWDVSNGQCVATWKSPVPVKRVEFSPCGNYFLAILDNVMKNPGSINIYEIERDSATHELTKVSEEPIHKIITHEGLDAATVAGWSTKGKYIIAGHKDGKISKYDVSNNYEYVDSIDLHEKSISDMQFSPDLTYFITSSRDTNSFLVDVSTLQVLKKYETDCPLNTAVITPLKEFIILGGGQEAKDVTTTSANEGKFEARFYHKIFEEEIGRVQGHFGPLNTVAISPQGTSYASGGEDGFIRLHHFEKSYFDFKYDVEKAAEAKEHMQEAN

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 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	1

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

Resolution resolution	9.000 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	9.00 Å
Resolution测定Method resolution_method	TEMPLATE MATCHING
颗粒数 num_particles	54410

Structure of mammalian eIF3 in the context of the 43S preinitiation complex

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

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B

State in the Current Structure

Other States of the Same Protein in the Database

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I

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

5a5u__assembly_1__model_1

5a5u__assembly_1__model_1 | I(q)

5a5u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (1)

Structure of mammalian eIF3 in the context of the 43S preinitiation complex

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

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT B

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

EUKARYOTIC TRANSLATION INITIATION FACTOR 3 SUBUNIT I

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

5a5u__assembly_1__model_1

5a5u__assembly_1__model_1 | I(q)

5a5u__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (1)