SAXSdb — 6gyu

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

Centromere DNA-binding protein complex CBF3 subunit B

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 heterocomplex	Heteromer	Protein 5	Centromere DNA-binding protein complex CBF3 subunit C × 1 （P35203） Suppressor of kinetochore protein 1 × 1 （P52286） Centromere DNA-binding protein complex CBF3 subunit A × 1 （P32504） ZINC ION × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CBF3B_YEAST
Isoform	—
PDB entities	1, 3
Chains and sequence ranges	Author chain B； PDBConstruct 1–608； UniProt 1–608 Author chain C； PDBConstruct 5–564； UniProt 49–608

Centromere DNA-binding protein complex CBF3 subunit C

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P35203

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Suppressor of kinetochore protein 1 × 1 （P52286） Centromere DNA-binding protein complex CBF3 subunit A × 1 （P32504） ZINC ION × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CBF3C_YEAST
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–478； UniProt 1–478

Suppressor of kinetochore protein 1

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P52286

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Centromere DNA-binding protein complex CBF3 subunit C × 1 （P35203） Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Centromere DNA-binding protein complex CBF3 subunit A × 1 （P32504） ZINC ION × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SKP1_YEAST
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–194； UniProt 1–194

Centromere DNA-binding protein complex CBF3 subunit A

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P32504

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 5	Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Centromere DNA-binding protein complex CBF3 subunit C × 1 （P35203） Centromere DNA-binding protein complex CBF3 subunit B × 1 （P40969） Suppressor of kinetochore protein 1 × 1 （P52286） ZINC ION × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CBF3A_YEAST
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–956； UniProt 1–956

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	6gyu
Deposition date deposition_date	2018-07-02
Structure title title	Cryo-EM structure of the CBF3-msk complex of the budding yeast kinetochore
Keywords keywords	Complex, DNA binding protein; DNA BINDING PROTEIN
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.

6gyu__assembly_1__model_1

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

Download this curve (.dat)

6gyu__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6gyu__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	49.08 Å
Rg (electron density)	49.09 Å
Total Rg	49.05 Å
Atom count	18159
Residues	2193
Excluded volume	325780 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6gyu__assembly_1__model_1`	pentameric （5）	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 (6)

Entity 1 Entity 1 polymer

Description description	Centromere DNA-binding protein complex CBF3 subunit B
Molecular weight formula_weight	71439.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B
Atom count atom_count	18159

MFNRTTQLKSKHPCSVCTRRKVKCDRMIPCGNCRKRGQDSECMKSTKLITASSSKEYLPDLLLFWQNYEYWITNIGLYKTKQRDLTRTPANLDTDTEECMFWMNYLQKDQSFQLMNFAMENLGALYFGSIGDISELYLRVEQYWDRRADKNHSVDGKYWDALIWSVFTMCIYYMPVEKLAEIFSVYPLHEYLGSNKRLNWEDGMQLVMCQNFARCSLFQLKQCDFMAHPDIRLVQAYLILATTTFPYDEPLLANSLLTQCIHTFKNFHVDDFRPLLNDDPVESIAKVTLGRIFYRLCGCDYLQSGPRKPIALHTEVSSLLQHAAYLQDLPNVDVYREENSTEVLYWKIISLDRDLDQYLNKSSKPPLKTLDAIRRELDIFQYKVDSLEEDFRSNNSRFQKFIALFQISTVSWKLFKMYLIYYDTADSLLKVIHYSKVIISLIVNNFHAKSEFFNRHPMVMQTITRVVSFISFYQIFVESAAVKQLLVDLTELTANLPTIFGSKLDKLVYLTERLSKLKLLWDKVQLLDSGDSFYHPVFKILQNDIKIIELKNDEMFSLIKGLGSLVPLNKLRQESLLEEEDENNTEPSDFRTIVEEFQSEYNISDILS

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	unidentified baculovirus

Entity 2 Entity 2 polymer

Description description	Centromere DNA-binding protein complex CBF3 subunit C
Molecular weight formula_weight	56416.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A

MPSFNPVRFLELPIDIRKEVYFHLDGNFCGAHPYPIDILYKSNDVELPGKPSYKRSKRSKKLLRYMYPVFATYLNIFEYSPQLIEKWLEYAFWLRYDCLVLDCFKVNHLYDGTLIDALEWTYLDNELRLAYFNKASMLEVWYTFKEYKKWVIDSVAFDELDLLNVSNIQFNIDNLTPQLVDKCLSILEQKDLFATIGEVQFGQDEEVGEEKDVDVSGANSDENSSPSSTIKNKKRSASKRSHSDNGNVGATHNQLTSISVIRTIRSMESMKSLRKITVRGEKLYELLINFHGFRDNPGKTISYIVKRRINEIRLSRMNQISRTGLADFTRWDNLQKLVLSRVAYIDLNSIVFPKNFKSLTMKRVSKIKWWNIEENILKELKVDKRTFKSLYIKEDDSKFTKFFNLRHTRIKELDKSEINQITYLRCQAIVWLSFRTLNHIKLQNVSEVFNNIIVPRALFDSKRVEIYRCEKISQVLVI

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	unidentified baculovirus

Entity 3 Entity 3 polymer

Description description	Centromere DNA-binding protein complex CBF3 subunit B
Molecular weight formula_weight	66401.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MFNRITASSSKEYLPDLLLFWQNYEYWITNIGLYKTKQRDLTRTPANLDTDTEECMFWMNYLQKDQSFQLMNFAMENLGALYFGSIGDISELYLRVEQYWDRRADKNHSVDGKYWDALIWSVFTMCIYYMPVEKLAEIFSVYPLHEYLGSNKRLNWEDGMQLVMCQNFARCSLFQLKQCDFMAHPDIRLVQAYLILATTTFPYDEPLLANSLLTQCIHTFKNFHVDDFRPLLNDDPVESIAKVTLGRIFYRLCGCDYLQSGPRKPIALHTEVSSLLQHAAYLQDLPNVDVYREENSTEVLYWKIISLDRDLDQYLNKSSKPPLKTLDAIRRELDIFQYKVDSLEEDFRSNNSRFQKFIALFQISTVSWKLFKMYLIYYDTADSLLKVIHYSKVIISLIVNNFHAKSEFFNRHPMVMQTITRVVSFISFYQIFVESAAVKQLLVDLTELTANLPTIFGSKLDKLVYLTERLSKLKLLWDKVQLLDSGDSFYHPVFKILQNDIKIIELKNDEMFSLIKGLGSLVPLNKLRQESLLEEEDENNTEPSDFRTIVEEFQSEYNISDILS

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	unidentified baculovirus

Entity 4 Entity 4 polymer

Description description	Suppressor of kinetochore protein 1
Molecular weight formula_weight	22357.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

MVTSNVVLVSGEGERFTVDKKIAERSLLLKNYLNDMHDSNLQNNSDSESDSDSETNHKSKDNNNGDDDDEDDDEIVMPVPNVRSSVLQKVIEWAEHHRDSNFPDEDDDDSRKSAPVDSWDREFLKVDQEMLYEIILAANYLNIKPLLDAGCKVVAEMIRGRSPEEIRRTFNIVNDFTPEEEAAIRRENEWAEDR

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	unidentified baculovirus

Entity 5 Entity 5 polymer

Description description	Centromere DNA-binding protein complex CBF3 subunit A
Molecular weight formula_weight	112066.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

MRSSILFLLKLMKIMDVQQQQEAMSSEDRFQELVDSLKPRTAHQYKTYYTKYIQWCQLNQIIPTPEDNSVNSVPYKDLPISAELIHWFLLDTLITDDKPGEKREETEDLDEEEENSFKIATLKKIIGSLNFLSKLCKVHENPNANIDTKYLESVTKLHTHWIDSQKAITTNETNNTNTQVLCPPLLKVSLNLWNPETNHLSEKFFKTCSEKLRFLVDFQLRSYLNLSFEERSKIRFGSLKLGKRDRDAIIYHKVTHSAEKKDTPGHHQLLALLPQDCPFICPQTTLAAYLYLRFYGIPSVSKGDGFPNLNADENGSLLQDIPILRGKSLTTYPREETFSNYYTTVFRYCHLPYKRREYFNKCNLVYPTWDEDTFRTFFNEENHGNWLEQPEAFAFPDKIPFDFKKIMNFKSPYTSYSTNAKKDPFPPPKDLLVQIFPEIDEYKRHDYEGLSQNSRDFLDLMEVLRERFLSNLPWIYKFFPNHDIFQDPIFGNSDFQSYFNDKTIHSKGSPILSFDILPGFNKIYKNKTNFYSLLIERPSQLTFASSHNPDTHPTQKQESEGPLQMSQLDTTQLNELLKQQSFEYVQFQTLSNFQILLSVFNKIFEKLEMKKSSRGYILHQLNLFKITLDERIKKSKIDDADKFIRDNQPIKKEENIVNEDGPNTSRRTKRPKQIRLLSIADSSDESSTEDSNVFKKDGESIEDGAYGENEDENDSEMQEQLKSMINELINSKISTFLRDQMDQFELKINALLDKILEEKVTRIIEQKLGSHTGKFSTLKRPQLYMTEEHNVGFDMEVPKKLRTSGKYAETVKDNDDHQAMSTTASPSPEQDQEAKSYTDEQEFMLDKSIDSIEGIILEWFTPNAKYANQCVHSMNKSGNKSWRANCEALYKERKSIVEFYIYLVNHESLDRYKAVDICEKLRDQNEGSFSRLAKFLRKWRHDHQNSFDGLLVYLSN

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	unidentified baculovirus

Entity 6 Entity 6 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) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	6gyuD00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	710 — Potassium Channel Kv1.1; Chain A
Homologous superfamily homologous superfamily	10 — Potassium Channel Kv1.1; Chain A

Domain ID domain_id	6gyuE02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	443 — hpI Integrase; Chain A
Homologous superfamily homologous superfamily	20 — Centromere DNA-binding protein complex CBF3 subunit, domain 2

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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	triclinic

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	3.00 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	198010

Cryo-EM structure of the CBF3-msk complex of the budding yeast kinetochore

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

Centromere DNA-binding protein complex CBF3 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

Centromere DNA-binding protein complex CBF3 subunit C

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Suppressor of kinetochore 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

Centromere DNA-binding protein complex CBF3 subunit A

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

6gyu__assembly_1__model_1

6gyu__assembly_1__model_1 | I(q)

6gyu__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 (6)

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 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

Entity 6 Entity 6 non-polymer

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (1)