SAXSdb — 6xk9

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

Eukaryotic peptide chain release factor GTP-binding subunit ERF3A

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	DNA damage-binding protein 1 × 1 （Q16531） Protein cereblon × 1 （Q96SW2） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 3	DNA damage-binding protein 1 × 1 （Q16531） Protein cereblon × 1 （Q96SW2） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ERF3A_HUMAN
Isoform	P15170-2
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 3–199； UniProt 437–633 Author chain X； PDBConstruct 3–199； UniProt 437–633

DNA damage-binding protein 1

Homo sapiens

UniProt Q16531

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Eukaryotic peptide chain release factor GTP-binding subunit ERF3A × 1 （P15170） Protein cereblon × 1 （Q96SW2） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 3	Eukaryotic peptide chain release factor GTP-binding subunit ERF3A × 1 （P15170） Protein cereblon × 1 （Q96SW2） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	DDB1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–1140； UniProt 1–1140 Author chain Y； PDBConstruct 1–1140； UniProt 1–1140

Protein cereblon

Homo sapiens

UniProt Q96SW2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Eukaryotic peptide chain release factor GTP-binding subunit ERF3A × 1 （P15170） DNA damage-binding protein 1 × 1 （Q16531） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 3	Eukaryotic peptide chain release factor GTP-binding subunit ERF3A × 1 （P15170） DNA damage-binding protein 1 × 1 （Q16531） 2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide × 1 ZINC ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CRBN_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 4–406； UniProt 40–442 Author chain Z； PDBConstruct 4–406； UniProt 40–442

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	6xk9
Deposition date deposition_date	2020-06-25
Structure title title	Cereblon in complex with DDB1, CC-90009, and GSPT1
Keywords keywords	DDB1, molecular glue, degradation, CC-90009, Acute Myeloid Leukemia, 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.

6xk9__assembly_1__model_1

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

Download this curve (.dat)

6xk9__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6xk9__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	45.53 Å
Rg (electron density)	46.04 Å
Total Rg	46.12 Å
Atom count	12870
Residues	1684
Excluded volume	230020 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6xk9__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`6xk9__assembly_2__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 (5)

Entity 1 Entity 1 polymer

Description description	Eukaryotic peptide chain release factor GTP-binding subunit ERF3A
Molecular weight formula_weight	21995.8 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	X,A
Atom count atom_count	25483

GSGPIRLPIVDKYKDMGTVVLGKLESGSICKGQQLVMMPNKHNVEVLGILSDDVETDTVAPGENLKIRLKGIEEEEILPGFILCDPNNLCHSGRTFDAQIVIIEHKSIICPGYNAVLHIHTCIEEVEITALICLVDKKSGEKSKTRPRFVKQDQVCIARLRTAGTICLETFKDFPQMGRFTLRDEGKTIAIGKVLKLVP

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	DNA damage-binding protein 1
Molecular weight formula_weight	127097.5 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

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

MSYNYVVTAQKPTAVNGCVTGHFTSAEDLNLLIAKNTRLEIYVVTAEGLRPVKEVGMYGKIAVMELFRPKGESKDLLFILTAKYNACILEYKQSGESIDIITRAHGNVQDRIGRPSETGIIGIIDPECRMIGLRLYDGLFKVIPLDRDNKELKAFNIRLEELHVIDVKFLYGCQAPTICFVYQDPQGRHVKTYEVSLREKEFNKGPWKQENVEAEASMVIAVPEPFGGAIIIGQESITYHNGDKYLAIAPPIIKQSTIVCHNRVDPNGSRYLLGDMEGRLFMLLLEKEEQMDGTVTLKDLRVELLGETSIAECLTYLDNGVVFVGSRLGDSQLVKLNVDSNEQGSYVVAMETFTNLGPIVDMCVVDLERQGQGQLVTCSGAFKEGSLRIIRNGIGIHEHASIDLPGIKGLWPLRSDPNRETDDTLVLSFVGQTRVLMLNGEEVEETELMGFVDDQQTFFCGNVAHQQLIQITSASVRLVSQEPKALVSEWKEPQAKNISVASCNSSQVVVAVGRALYYLQIHPQELRQISHTEMEHEVACLDITPLGDSNGLSPLCAIGLWTDISARILKLPSFELLHKEMLGGEIIPRSILMTTFESSHYLLCALGDGALFYFGLNIETGLLSDRKKVTLGTQPTVLRTFRSLSTTNVFACSDRPTVIYSSNHKLVFSNVNLKEVNYMCPLNSDGYPDSLALANNSTLTIGTIDEIQKLHIRTVPLYESPRKICYQEVSQCFGVLSSRIEVQDTSGGTTALRPSASTQALSSSVSSSKLFSSSTAPHETSFGEEVEVHNLLIIDQHTFEVLHAHQFLQNEYALSLVSCKLGKDPNTYFIVGTAMVYPEEAEPKQGRIVVFQYSDGKLQTVAEKEVKGAVYSMVEFNGKLLASINSTVRLYEWTTEKELRTECNHYNNIMALYLKTKGDFILVGDLMRSVLLLAYKPMEGNFEEIARDFNPNWMSAVEILDDDNFLGAENAFNLFVCQKDSAATTDEERQHLQEVGLFHLGEFVNVFCHGSLVMQNLGETSTPTQGSVLFGTVNGMIGLVTSLSESWYNLLLDMQNRLNKVIKSVGKIEHSFWRSFHTERKTEPATGFIDGDLIESFLDISRPKMQEVVANLQYDDGSGMKREATADDLIKVVEELTRIH

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Spodoptera frugiperda

Entity 3 Entity 3 polymer

Description description	Protein cereblon
Molecular weight formula_weight	46596.6 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

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

GSMEAKKPNIINFDTSLPTSHTYLGADMEEFHGRTLHDDDSCQVIPVLPQVMMILIPGQTLPLQLFHPQEVSMVRNLIQKDRTFAVLAYSNVQEREAQFGTTAEIYAYREEQDFGIEIVKVKAIGRQRFKVLELRTQSDGIQQAKVQILPECVLPSTMSAVQLESLNKCQIFPSKPVSREDQCSYKWWQKYQKRKFHCANLTSWPRWLYSLYDAETLMDRIKKQLREWDENLKDDSLPSNPIDFSYRVAACLPIDDVLRIQLLKIGSAIQRLRCELDIMNKCTSLCCKQCQETEITTKNEIFSLSLCGPMAAYVNPHGYVHETLTVYKACNLNLIGRPSTEHSWFPGYAWTVAQCKICASHIGWKFTATKKDMSPQKFWGLTRSALLPTIPDTEDEISPDKVILCL

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Spodoptera frugiperda

Entity 4 Entity 4 non-polymer

Description description	2-(4-chlorophenyl)-N-({2-[(3S)-2,6-dioxopiperidin-3-yl]-1-oxo-2,3-dihydro-1H-isoindol-5-yl}methyl)-2,2-difluoroacetamide
Molecular weight formula_weight	461.8 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	6xk9B01
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	10 — YVTN repeat-like/Quinoprotein amine dehydrogenase

Domain ID domain_id	6xk9B02
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	10 — YVTN repeat-like/Quinoprotein amine dehydrogenase

Domain ID domain_id	6xk9Y01
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	10 — YVTN repeat-like/Quinoprotein amine dehydrogenase

Domain ID domain_id	6xk9Y02
Class class	2 — Mainly Beta
Architecture architecture	130 — 7 Propeller
Topology topology	10 — Methylamine Dehydrogenase; Chain H
Homologous superfamily homologous superfamily	10 — YVTN repeat-like/Quinoprotein amine dehydrogenase

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Unit-cell length a length_a	157.616 Å
Unit-cell length b length_b	112.041 Å
Unit-cell length c length_c	176.582 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	95.79 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 2 1
Space-group number int_tables_number	3
Crystal system crystal_system	monoclinic

Resolution resolution	3.640 Å
Low-resolution limit resolution_low	74.450 Å
R factor r_factor	0.2097
R_work r_work	0.2079
R_free r_free	0.2455

Cereblon in complex with DDB1, CC-90009, and GSPT1

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

Eukaryotic peptide chain release factor GTP-binding subunit ERF3A

State in the Current Structure

Other States of the Same Protein in the Database

DNA damage-binding protein 1

State in the Current Structure

Other States of the Same Protein in the Database

Protein cereblon

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

6xk9__assembly_1__model_1

6xk9__assembly_1__model_1 | I(q)

6xk9__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Cereblon in complex with DDB1, CC-90009, and GSPT1

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

Eukaryotic peptide chain release factor GTP-binding subunit ERF3A

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA damage-binding protein 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

Protein cereblon

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

6xk9__assembly_1__model_1

6xk9__assembly_1__model_1 | I(q)

6xk9__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 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)