4b2t

The crystal structures of the eukaryotic chaperonin CCT reveal its functional partitioning

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

T-COMPLEX PROTEIN 1 SUBUNIT ALPHA

OrganismNot specified

UniProt Q32L40

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPA_BOVIN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–556; UniProt 1–556 Author chain a; PDBConstruct 1–556; UniProt 1–556

T-COMPLEX PROTEIN 1 SUBUNIT BETA

OrganismNot specified

UniProt Q3ZBH0

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPB_BOVIN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–535; UniProt 1–535 Author chain b; PDBConstruct 1–535; UniProt 1–535

T-COMPLEX PROTEIN 1 SUBUNIT DELTA

OrganismNot specified

UniProt Q2T9X2

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPD_BOVIN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain D; PDBConstruct 1–542; UniProt 1–542 Author chain d; PDBConstruct 1–542; UniProt 1–542

T-COMPLEX PROTEIN 1 SUBUNIT GAMMA

OrganismNot specified

UniProt Q3T0K2

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPG_BOVIN
Isoform —
PDB entities 5
Chains and sequence ranges Author chain G; PDBConstruct 1–545; UniProt 1–545 Author chain g; PDBConstruct 1–545; UniProt 1–545

T-COMPLEX PROTEIN 1 SUBUNIT ETA

OrganismNot specified

UniProt Q2NKZ1

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPH_BOVIN
Isoform —
PDB entities 6
Chains and sequence ranges Author chain H; PDBConstruct 1–543; UniProt 1–543 Author chain h; PDBConstruct 1–543; UniProt 1–543

T-COMPLEX PROTEIN 1 SUBUNIT THETA

OrganismNot specified

UniProt Q3ZCI9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT ZETA × 2 (Q3MHL7) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPQ_BOVIN
Isoform —
PDB entities 7
Chains and sequence ranges Author chain Q; PDBConstruct 1–548; UniProt 1–548 Author chain q; PDBConstruct 1–548; UniProt 1–548

T-COMPLEX PROTEIN 1 SUBUNIT ZETA

OrganismNot specified

UniProt Q3MHL7

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 16 T-COMPLEX PROTEIN 1 SUBUNIT ALPHA × 2 (Q32L40) T-COMPLEX PROTEIN 1 SUBUNIT BETA × 2 (Q3ZBH0) T-COMPLEX PROTEIN 1 SUBUNIT DELTA × 2 (Q2T9X2) T-COMPLEX PROTEIN 1 SUBUNIT EPSILON × 2 T-COMPLEX PROTEIN 1 SUBUNIT GAMMA × 2 (Q3T0K2) T-COMPLEX PROTEIN 1 SUBUNIT ETA × 2 (Q2NKZ1) T-COMPLEX PROTEIN 1 SUBUNIT THETA × 2 (Q3ZCI9) Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TCPZ_BOVIN
Isoform —
PDB entities 8
Chains and sequence ranges Author chain Z; PDBConstruct 1–531; UniProt 1–531 Author chain z; PDBConstruct 1–531; UniProt 1–531

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_id4b2t
Deposition date deposition_date2012-07-17
Structure title titleThe crystal structures of the eukaryotic chaperonin CCT reveal its functional partitioning
Keywords keywordsCHAPERONE; CHAPERONE
Experimental Method methodX-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.

4b2t__assembly_1__model_1

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

Download this curve (.dat)

4b2t__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

4b2t__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)68.32 Å
Rg (electron density)67.83 Å
Total Rg67.99 Å
Atom count51877
Residues6842
Excluded volume932820 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4b2t__assembly_1__model_1 hexadecameric (16) 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 (8)

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7. Citations (2)