8azk

Bovine 20S proteasome, untreated

Method: ELECTRON MICROSCOPY

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

Proteasome subunit beta type-3

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB3_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain J； PDBConstruct 1–205； UniProt 1–205 Author chain X； PDBConstruct 1–205； UniProt 1–205

Proteasome subunit alpha type-6

OrganismNot specified

UniProt Q2YDE4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA6_BOVIN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–246； UniProt 1–246 Author chain O； PDBConstruct 1–246； UniProt 1–246

Proteasome subunit alpha type-2

OrganismNot specified

UniProt Q3T0Y5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA2_BOVIN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain B； PDBConstruct 1–233； UniProt 2–234 Author chain P； PDBConstruct 1–233； UniProt 2–234

Proteasome subunit alpha type-4

OrganismNot specified

UniProt Q3ZCK9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA4_BOVIN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain C； PDBConstruct 1–261； UniProt 1–261 Author chain Q； PDBConstruct 1–261； UniProt 1–261

Proteasome subunit alpha type-7

OrganismNot specified

UniProt Q3ZBG0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA7_BOVIN
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain D； PDBConstruct 1–248； UniProt 1–248 Author chain R； PDBConstruct 1–248； UniProt 1–248

Proteasome subunit alpha type-5

OrganismNot specified

UniProt Q5E987

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA5_BOVIN
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain E； PDBConstruct 1–241； UniProt 1–241 Author chain S； PDBConstruct 1–241； UniProt 1–241

Proteasome subunit alpha type-1

OrganismNot specified

UniProt Q3T0X5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA1_BOVIN
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain F； PDBConstruct 1–263； UniProt 1–263 Author chain T； PDBConstruct 1–263； UniProt 1–263

Proteasome subunit alpha type-3

OrganismNot specified

UniProt Q58DU5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSA3_BOVIN
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain G； PDBConstruct 1–254； UniProt 2–255 Author chain U； PDBConstruct 1–254； UniProt 2–255

Proteasome subunit beta type-6

OrganismNot specified

UniProt Q3MHN0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB6_BOVIN
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain H； PDBConstruct 1–205； UniProt 35–239 Author chain V； PDBConstruct 1–205； UniProt 35–239

Proteasome subunit beta type-7

OrganismNot specified

UniProt Q2TBP0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB7_BOVIN
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain I； PDBConstruct 1–234； UniProt 44–277 Author chain W； PDBConstruct 1–234； UniProt 44–277

Proteasome subunit beta type-2

OrganismNot specified

UniProt Q5E9K0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB2_BOVIN
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain K； PDBConstruct 1–201； UniProt 1–201 Author chain Y； PDBConstruct 1–201； UniProt 1–201

Proteasome subunit beta type-5

OrganismNot specified

UniProt Q32KL2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-1 × 2 （Q2TBX6） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB5_BOVIN
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain L； PDBConstruct 1–204； UniProt 60–263 Author chain Z； PDBConstruct 1–204； UniProt 60–263

Proteasome subunit beta type-1

OrganismNot specified

UniProt Q2TBX6

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-4 × 2 （Q3T108）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB1_BOVIN
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain 1； PDBConstruct 1–213； UniProt 29–241 Author chain M； PDBConstruct 1–213； UniProt 29–241

Proteasome subunit beta type-4

OrganismNot specified

UniProt Q3T108

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 28	Proteasome subunit beta type-3 × 2 （P33672） Proteasome subunit alpha type-6 × 2 （Q2YDE4） Proteasome subunit alpha type-2 × 2 （Q3T0Y5） Proteasome subunit alpha type-4 × 2 （Q3ZCK9） Proteasome subunit alpha type-7 × 2 （Q3ZBG0） Proteasome subunit alpha type-5 × 2 （Q5E987） Proteasome subunit alpha type-1 × 2 （Q3T0X5） Proteasome subunit alpha type-3 × 2 （Q58DU5） Proteasome subunit beta type-6 × 2 （Q3MHN0） Proteasome subunit beta type-7 × 2 （Q2TBP0） Proteasome subunit beta type-2 × 2 （Q5E9K0） Proteasome subunit beta type-5 × 2 （Q32KL2） Proteasome subunit beta type-1 × 2 （Q2TBX6）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PSB4_BOVIN
Isoform	—
PDB entities	14
Chains and sequence ranges	Author chain 2； PDBConstruct 1–219； UniProt 46–264 Author chain N； PDBConstruct 1–219； UniProt 46–264

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	8azk
Deposition date deposition_date	2022-09-06
Last revision last_revision	2024-03-20
Structure title title	Bovine 20S proteasome, untreated
Keywords keywords	20S proteasome, Degradation, Proteolysis, HYDROLASE; HYDROLASE
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.

8azk__assembly_1__model_1

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

Download this curve (.dat)

8azk__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8azk__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	62.11 Å
Rg (electron density)	61.63 Å
Total Rg	61.71 Å
Atom count	46965
Residues	6222
Excluded volume	836530 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8azk__assembly_1__model_1`	28-meric （28）	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 (14)

Entity 1 Entity 1 polymer

Description description	Proteasome subunit beta type-3
Molecular weight formula_weight	22954.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J,X
Atom count atom_count	46965

MSIMSYNGGAVMAMKGKNCVAIAADRRFGIQAQLVTTDFQKIFPMGDRLYIGLAGLATDVQTVAQRLKFRLNLYELKEGRQIKPYTLMSMVANLLYEKRFGPYYTEPVIAGLDPKTFKPFICSLDLIGCPMVTDDFVVSGTCAEQMYGMCESLWEPNMDPDHLFETISQAMLNAVDRDAVSGMGVIVHIIEKDKITTRTLKARMD

Entity 2 Entity 2 polymer

Description description	Proteasome subunit alpha type-6
Molecular weight formula_weight	27432.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,O

MSRGSSAGFDRHITIFSPEGRLYQVEYAFKAINQGGLTSVAVRGKDCAVIVTQKKVPDKLLDSSTVTHLFKITENIGCVMTGMTADSRSQVQRARYEAANWKYKYGYEIPVDMLCKRIADISQVYTQNAEMRPLGCCMILIGIDEEQGPQVYKCDPAGYYCGFKATAAGVKQTESTSFLEKKVKKKFDWTFEQTVETAITCLSTVLSIDFKPSEIEVGVVTVENPKFRILTEAEIDAHLVALAERD

Entity 3 Entity 3 polymer

Description description	Proteasome subunit alpha type-2
Molecular weight formula_weight	25796.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B,P

AERGYSFSLTTFSPSGKLVQIEYALAAVAGGAPSVGIKAANGVVLATEKKQKSILYDERSVHKVEPITKHIGLVYSGMGPDYRVLVHRARKLAQQYYLVYQEPIPTAQLVQRVASVMQEYTQSGGVRPFGVSLLICGWNEGRPYLFQSDPSGAYFAWKATAMGKNYVNGKTFLEKRYNEDLELEDAIHTAILTLKESFEGQMTEDNIEVGICNEAGFRRLTPTEVKDYLAAIA

Entity 4 Entity 4 polymer

Description description	Proteasome subunit alpha type-4
Molecular weight formula_weight	29525.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C,Q

MSRRYDSRTTIFSPEGRLYQVEYAMEAIGHAGTCLGILANDGVLLAAERRNIHKLLDEVFFSEKIYKLNEDMACSVAGITSDANVLTNELRLIAQRYLLQYQEPIPCEQLVTALCDIKQAYTQFGGKRPFGVSLLYIGWDKHYGFQLYQSDPSGNYGGWKATCIGNNSAAAVSMLKQDYKEGEMTLKSALALAIKVLNKTMDVSKLSAEKVEIATLTRENGKTVIRVLKQKEVEQLIKKHEEEEAKAEREKKEKEQKEKDK

Entity 5 Entity 5 polymer

Description description	Proteasome subunit alpha type-7
Molecular weight formula_weight	27929.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D,R

MSYDRAITVFSPDGHLFQVEYAQEAVKKGSTAVGVRGRDIVVLGVEKKSVAKLQDERTVRKICALDDNVCMAFAGLTADARIVINRARVECQSHRLTVEDPVTVEYITRYIASLKQRYTQSNGRRPFGISALIVGFDFDGTPRLYQTDPSGTYHAWKANAIGRGAKSVREFLEKNYTDEAIETDDLTIKLVIKALLEVVQSGGKNIELAVMRRDQSLKILNPEEIEKYVAEIEKEKEENEKKKQKKAS

Entity 6 Entity 6 polymer

Description description	Proteasome subunit alpha type-5
Molecular weight formula_weight	26494.0 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,S

MFLTRSEYDRGVNTFSPEGRLFQVEYDIEAIKLGSTAIGIQTSEGVCLAVEKRITSPLMEPSSIEKIVEIDAHIGCAMSGLIADAKTLIDKARVETQNHWFTYNETMTVESVTQAVSNLALQFGEEDADPGAMSRPFGVALLFGGVDEKGPQLFHMDPSGTFVQCDARAIGSASEGAQSSLQELYHKSMTLKEAIKSSLIILKQVMEEKLNATNIELATVQPGQNFHMFTKEELEEVIKDI

Entity 7 Entity 7 polymer

Description description	Proteasome subunit alpha type-1
Molecular weight formula_weight	29595.6 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F,T

MFRNQYDNDVTVWSPQGRIHQIEYAMEAVKQGSATVGLKSKTHAVLVALKRAQSELAAHQKKILHVDNHIGISIAGLTADARLLCNFMRQECLDSRFVFDRPLPVSRLVSLIGSKTQIPTQRYGRRPYGVGLLIAGYDDMGPHIFQTCPSANYFDCRAMSIGARSQSARTYLERHMSEFMECNLNELVKHGLRALRETLPAEQDLTTKNVSIGIVGKDLEFTIYDDDDVSPFLEGLEERPQRKAQPAQPADEPAEKADEPMEH

Entity 8 Entity 8 polymer

Description description	Proteasome subunit alpha type-3
Molecular weight formula_weight	28338.1 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G,U

SSIGTGYDLSASTFSPDGRVFQVEYAMKAVENSSTAIGIRCKDGVVFGVEKLVLSKLYEEGSNKRLFNVDRHVGMAVAGLLADARSLADIAREEASNFRSNFGYNIPLKHLADRVAMYVHAYTLYSAVRPFGCSFMLGSYSVNDGAQLYMIDPSGVSYGYWGCAIGKARQAAKTEIEKLQMKEMTCRDIVKEVAKIIYIVHDEVKDKAFELELSWVGELTNGRHEIVPKDIREEAEKYAKESLKEEDESDDDNM

Entity 9 Entity 9 polymer

Description description	Proteasome subunit beta type-6
Molecular weight formula_weight	21921.8 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H,V

TTIMAVQFDGGVVLGADSRTTTGSYIANRVTDKLTPIHDRIFCCRSGSAADTQAVADAVTYQLGFHSIELNEPPLVHTAASLFKEMCYRYREDLMAGIIIAGWDPQEGGQVYSVPMGGMMVRQSFAIGGSGSSYIYGYVDATYREGMTKEECLQFTANALALAMERDGSSGGVIRLAAIAESGVERQVLLGDQIPKFAVATLPPA

Entity 10 Entity 10 polymer

Description description	Proteasome subunit beta type-7
Molecular weight formula_weight	25351.0 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I,W

TTIAGVVYKDGIVLGADTRATEGMVVADKNCSKIHFISPNIYCCGAGTAADTDMTTQLISSNLELHSLSTGRLPRVVTANRMLKQMLFRYRGYIGAALVLGGVDVTGPHLYSIYPHGSTDKLPYVTMGSGSLAAMAVFEDKFRPDMEEEEAKNLVSEAIAAGIFNDLGSGSNIDLCVISKNKLDFLRPYTVPNKKGTRLGRYRCEKGTTAVLTEKITPLEIEVLEETVQTMDTS

Entity 11 Entity 11 polymer

Description description	Proteasome subunit beta type-2
Molecular weight formula_weight	22864.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K,Y

MEYLIGIQGPDYVLVASDRVAASNIVQMKDDHDKMFKMSEKILLLCVGEAGDTVQFAEYIQKNVQLYKMRNGYELSPTAAANFTRRNLADCLRSRTPYHVNLLLAGYDEHEGPALYYMDYLAALAKAPFAAHGYGAFLTLSILDRYYTPTISRERAVELLRKCLEELQKRFILNLPTFSVRIIDKNGIHDLDNISFPKQGS

Entity 12 Entity 12 polymer

Description description	Proteasome subunit beta type-5
Molecular weight formula_weight	22484.4 kDa
EC 编号 ec_number	3.4.25.1
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L,Z

TTTLAFKFRHGVIVAADSRATAGAYIASQTVKKVIEINPYLLGTMAGGAADCSFWERLLARQCRIYELRNKERISVAAASKLLANMVYQYKGMGLSMGTMICGWDKRGPGLYYVDSEGNRISGATFSVGSGSVYAYGVMDRGYSYDLEVEQAYDLARRAIYQATYRDAYSGGAVNLYHVREDGWIRVSSDNVADLHEKYSGSTP

Entity 13 Entity 13 polymer

Description description	Proteasome subunit beta type-1
Molecular weight formula_weight	23579.0 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M,1

RFSPYVFNGGTILAIAGEDFAIVASDTRLSEGFSIHTRDSPKCYKLTDKTVIGCSGFHGDCLTLTKIIEARLKMYKHSNNKAMTTGAIAAMLSTILYSRRFFPYYVYNIIGGLDEEGKGAVYSFDPVGSYQRDSFKAGGSASAMLQPLLDNQVGFKNMQNVEHVPLSLDRAMRLVKDVFISAAERDVYTGDALRICIVTKEGIREETVSLRKD

Entity 14 Entity 14 polymer

Description description	Proteasome subunit beta type-4
Molecular weight formula_weight	24402.7 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	N,2

TQNPMVTGTSVLGVKFEGGVVIAADMLGSYGSLARFRNISRIMRVNNSTMLGASGDYADFQYLKQVLGQMVIDEELLGDGHSYSPRAIHSWLTRAMYSRRSKMNPLWNTMVIGGYADGESFLGYVDMLGVAYEAPSLATGYGAYLAQPLLREVLEKQPVLSQTEARDLVERCMRVLYYRDARSYNRFQTATVTEKGVEIEGPLSTETNWDIAHMISGFE

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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	—

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

Resolution resolution	3.10 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	346962

Bovine 20S proteasome, untreated

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

Proteasome subunit beta type-3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-6

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-7

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-5

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit alpha type-3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit beta type-6

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Proteasome subunit beta type-7

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer