8sgq

CCT G beta 5 complex intermediate state

Method: ELECTRON MICROSCOPY

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

T-complex protein 1 subunit zeta

OrganismNot specified

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 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPZ_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain Z； PDBConstruct 1–508； UniProt 17–524 Author chain z； PDBConstruct 1–508； UniProt 17–524

T-complex protein 1 subunit alpha

OrganismNot specified

UniProt P17987

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 zeta × 2 （P40227） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPA_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–536； UniProt 2–537 Author chain a； PDBConstruct 1–536； UniProt 2–537

T-complex protein 1 subunit gamma

OrganismNot specified

UniProt P49368

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPG_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain G； PDBConstruct 1–528； UniProt 3–530 Author chain g； PDBConstruct 1–528； UniProt 3–530

T-complex protein 1 subunit eta, N-terminally processed

OrganismNot specified

UniProt Q99832

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPH_HUMAN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain H； PDBConstruct 1–514； UniProt 12–525 Author chain h； PDBConstruct 1–514； UniProt 12–525

T-complex protein 1 subunit theta

OrganismNot specified

UniProt P50990

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPQ_HUMAN
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain Q； PDBConstruct 1–498； UniProt 29–526 Author chain q； PDBConstruct 1–498； UniProt 29–526

T-complex protein 1 subunit beta

OrganismNot specified

UniProt P78371

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit delta × 2 （P50991） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPB_HUMAN
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain B； PDBConstruct 1–526； UniProt 2–527 Author chain b； PDBConstruct 1–526； UniProt 2–527

T-complex protein 1 subunit delta

OrganismNot specified

UniProt P50991

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit epsilon × 2 （P48643） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPD_HUMAN
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain D； PDBConstruct 1–520； UniProt 19–538 Author chain d； PDBConstruct 1–520； UniProt 19–538

T-complex protein 1 subunit epsilon

OrganismNot specified

UniProt P48643

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 zeta × 2 （P40227） T-complex protein 1 subunit alpha × 2 （P17987） T-complex protein 1 subunit gamma × 2 （P49368） T-complex protein 1 subunit eta, N-terminally processed × 2 （Q99832） T-complex protein 1 subunit theta × 2 （P50990） T-complex protein 1 subunit beta × 2 （P78371） T-complex protein 1 subunit delta × 2 （P50991） ADENOSINE-5'-DIPHOSPHATE × 16	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TCPE_HUMAN
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain E； PDBConstruct 1–540； UniProt 2–541 Author chain e； PDBConstruct 1–540； UniProt 2–541

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	8sgq
Deposition date deposition_date	2023-04-12
Structure title title	CCT G beta 5 complex intermediate state
Keywords keywords	CCT, Gb5, complex, open, CHAPERONE; CHAPERONE
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.

8sgq__assembly_1__model_1

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

Download this curve (.dat)

8sgq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8sgq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	70.39 Å
Rg (electron density)	69.78 Å
Total Rg	69.92 Å
Atom count	62154
Residues	8092
Excluded volume	1114100 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8sgq__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 (9)

Entity 1 Entity 1 polymer

Description description	T-complex protein 1 subunit zeta
Molecular weight formula_weight	55789.3 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	z,Z
Atom count atom_count	62187

QAALAVNISAARGLQDVLRTNLGPKGTMKMLVSGAGDIKLTKDGNVLLHEMQIQHPTASLIAKVATAQDDITGDGTTSNVLIIGELLKQADLYISEGLHPRIITEGFEAAKEKALQFLEEVKVSREMDRETLIDVARTSLRTKVHAELADVLTEAVVDSILAIKKQDEPIDLFMIEIMEMKHKSETDTSLIRGLVLDHGARHPDMKKRVEDAYILTCNVSLEYEKTEVNSGFFYKSAEEREKLVKAERKFIEDRVKKIIELKRKVCGDSDKGFVVINQKGIDPFSLDALSKEGIVALRRAKRRNMERLTLACGGVALNSFDDLSPDCLGHAGLVYEYTLGEEKFTFIEKCNNPRSVTLLIKGPNKHTLTQIKDAVRDGLRAVKNAIDDGCVVPGAGAVEVAMAEALIKHKPSVKGRAQLGVQAFADALLIIPKVLAQNSGFDLQETLVKIQAEHSESGQLVGVDLNTGEPMVAAEVGVWDNYCVKKQLLHSCTVIATNILLVDEIMRA

Entity 2 Entity 2 polymer

Description description	T-complex protein 1 subunit alpha
Molecular weight formula_weight	58243.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

EGPLSVFGDRSTGETIRSQNVMAAASIANIVKSSLGPVGLDKMLVDDIGDVTITNDGATILKLLEVEHPAAKVLCELADLQDKEVGDGTTSVVIIAAELLKNADELVKQKIHPTSVISGYRLACKEAVRYINENLIVNTDELGRDCLINAAKTSMSSKIIGINGDFFANMVVDAVLAIKYTDIRGQPRYPVNSVNILKAHGRSQMESMLISGYALNCVVGSQGMPKRIVNAKIACLDFSLQKTKMKLGVQVVITDPEKLDQIRQRESDITKERIQKILATGANVILTTGGIDDMCLKYFVEAGAMAVRRVLKRDLKRIAKASGATILSTLANLEGEETFEAAMLGQAEEVVQERICDDELILIKNTKARTSASIILRGANDFMCDEMERSLHDALCVVKRVLESKSVVPGGGAVEAALSIYLENYATSMGSREQLAIAEFARSLLVIPNTLAVNAAQDSTDLVAKLRAFHNEAQVNPERKNLKWIGLDLSNGKPRDNKQAGVFEPTIVKVKSLKFATEAAITILRIDDLIKLHPES

Entity 3 Entity 3 polymer

Description description	T-complex protein 1 subunit gamma
Molecular weight formula_weight	58838.0 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

GHRPVLVLSQNTKRESGRKVQSGNINAAKTIADIIRTCLGPKSMMKMLLDPMGGIVMTNDGNAILREIQVQHPAAKSMIEISRTQDEEVGDGTTSVIILAGEMLSVAEHFLEQQMHPTVVISAYRKALDDMISTLKKISIPVDISDSDMMLNIINSSITTKAISRWSSLACNIALDAVKMVQFEENGRKEIDIKKYARVEKIPGGIIEDSCVLRGVMINKDVTHPRMRRYIKNPRIVLLDSSLEYKKGESQTDIEITREEDFTRILQMEEEYIQQLCEDIIQLKPDVVITEKGISDLAQHYLMRANITAIRRVRKTDNNRIARACGARIVSRPEELREDDVGTGAGLLEIKKIGDEYFTFITDCKDPKACTILLRGASKEILSEVERNLQDAMQVCRNVLLDPQLVPGGGASEMAVAHALTEKSKAMTGVEQWPYRAVAQALEVIPRTLIQNCGASTIRLLTSLRAKHTQENCETWGVNGETGTLVDMKELGIWEPLAVKLQTYKTAVETAVLLLRIDDIVSGHKKKG

Entity 4 Entity 4 polymer

Description description	T-complex protein 1 subunit eta, N-terminally processed
Molecular weight formula_weight	56369.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

GTDSSQGIPQLVSNISACQVIAEAVRTTLGPRGMDKLIVDGRGKATISNDGATILKLLDVVHPAAKTLVDIAKSQDAEVGDGTTSVTLLAAEFLKQVKPYVEEGLHPQIIIRAFRTATQLAVNKIKEIAVTVKKADKVEQRKLLEKCAMTALSSKLISQQKAFFAKMVVDAVMMLDDLLQLKMIGIKKVQGGALEDSQLVAGVAFKKTFSYAGFEMQPKKYHNPKIALLNVELELKAEKDNAEIRVHTVEDYQAIVDAEWNILYDKLEKIHHSGAKVVLSKLPIGDVATQYFADRDMFCAGRVPEEDLKRTMMACGGSIQTSVNALSADVLGRCQVFEETQIGGERYNFFTGCPKAKTCTFILRGGAEQFMEETERSLHDAIMIVRRAIKNDSVVAGGGAIEMELSKYLRDYSRTIPGKQQLLIGAYAKALEIIPRQLCDNAGFDATNILNKLRARHAQGGTWYGVDINNEDIADNFEAFVWEPAMVRINALTAASEAACLIVSVDETIKNPRS

Entity 5 Entity 5 polymer

Description description	T-complex protein 1 subunit theta
Molecular weight formula_weight	54399.5 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

VYRNIQACKELAQTTRTAYGPNGMNKMVINHLEKLFVTNDAATILRELEVQHPAAKMIVMASHMQEQEVGDGTNFVLVFAGALLELAEELLRIGLSVSEVIEGYEIACRKAHEILPNLVCCSAKNLRDIDEVSSLLRTSIMSKQYGNEVFLAKLIAQACVSIFPDSGHFNVDNIRVCKILGSGISSSSVLHGMVFKKETEGDVTSVKDAKIAVYSCPFDGMITETKGTVLIKTAEELMNFSKGEENLMDAQVKAIADTGANVVVTGGKVADMALHYANKYNIMLVRLNSKWDLRRLCKTVGATALPRLTPPVLEEMGHCDSVYLSEVGDTQVVVFKHEKEDGAISTIVLRGSTDNLMDDIERAVDDGVNTFKVLTRDKRLVPGGGATEIELAKQITSYGETCPGLEQYAIKKFAEAFEAIPRALAENSGVKANEVISKLYAVHQEGNKNVGLDIEAEVPAVKDMLEAGILDTYLGKYWAIKLATNAAVTVLRVDQIIM

Entity 6 Entity 6 polymer

Description description	T-complex protein 1 subunit beta
Molecular weight formula_weight	56490.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

ASLSLAPVNIFKAGADEERAETARLTSFIGAIAIGDLVKSTLGPKGMDKILLSSGRDASLMVTNDGATILKNIGVDNPAAKVLVDMSRVQDDEVGDGTTSVTVLAAELLREAESLIAKKIHPQTIIAGWREATKAAREALLSSAVDHGSDEVKFRQDLMNIAGTTLSSKLLTHHKDHFTKLAVEAVLRLKGSGNLEAIHIIKKLGGSLADSYLDEGFLLDKKIGVNQPKRIENAKILIANTGMDTDKIKIFGSRVRVDSTAKVAEIEHAEKEKMKEKVERILKHGINCFINRQLIYNYPEQLFGAAGVMAIEHADFAGVERLALVTGGEIASTFDHPELVKLGSCKLIEEVMIGEDKLIHFSGVALGEACTIVLRGATQQILDEAERSLHDALCVLAQTVKDSRTVYGGGCSEMLMAHAVTQLANRTPGKEAVAMESYAKALRMLPTIIADNAGYDSADLVAQLRAAHSEGNTTAGLDMREGTIGDMAILGITESFQVKRQVLLSAAEAAEVILRVDNIIKAAPRK

Entity 7 Entity 7 polymer

Description description	T-complex protein 1 subunit delta
Molecular weight formula_weight	56242.2 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

RGKGAYQDRDKPAQIRFSNISAAKAVADAIRTSLGPKGMDKMIQDGKGDVTITNDGATILKQMQVLHPAARMLVELSKAQDIEAGDGTTSVVIIAGSLLDSCTKLLQKGIHPTIISESFQKALEKGIEILTDMSRPVELSDRETLLNSATTSLNSKVVSQYSSLLSPMSVNAVMKVIDPATATSVDLRDIKIVKKLGGTIDDCELVEGLVLTQKVSNSGITRVEKAKIGLIQFCLSAPKTDMDNQIVVSDYAQMDRVLREERAYILNLVKQIKKTGCNVLLIQKSILRDALSDLALHFLNKMKIMVIKDIEREDIEFICKTIGTKPVAHIDQFTADMLGSAELAEEVNLNGSGKLLKITGCASPGKTVTIVVRGSNKLVIEEAERSIHDALCVIRCLVKKRALIAGGGAPEIELALRLTEYSRTLSGMESYCVRAFADAMEVIPSTLAENAGLNPISTVTELRNRHAQGEKTAGINVRKGGISNILEELVVQPLLVSVSALTLATETVRSILKIDDVVNT

Entity 8 Entity 8 polymer

Description description	T-complex protein 1 subunit epsilon
Molecular weight formula_weight	59618.8 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

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

ASMGTLAFDEYGRPFLIIKDQDRKSRLMGLEALKSHIMAAKAVANTMRTSLGPNGLDKMMVDKDGDVTVTNDGATILSMMDVDHQIAKLMVELSKSQDDEIGDGTTGVVVLAGALLEEAEQLLDRGIHPIRIADGYEQAARVAIEHLDKISDSVLVDIKDTEPLIQTAKTTLGSKVVNSCHRQMAEIAVNAVLTVADMERRDVDFELIKVEGKVGGRLEDTKLIKGVIVDKDFSHPQMPKKVEDAKIAILTCPFEPPKPKTKHKLDVTSVEDYKALQKYEKEKFEEMIQQIKETGANLAICQWGFDDEANHLLLQNNLPAVRWVGGPEIELIAIATGGRIVPRFSELTAEKLGFAGLVQEISFGTTKDKMLVIEQCKNSRAVTIFIRGGNKMIIEEAKRSLHDALCVIRNLIRDNRVVYGGGAAEISCALAVSQEADKCPTLEQYAMRAFADALEVIPMALSENSGMNPIQTMTEVRARQVKEMNPALGIDCLHKGTNDMKQQHVIETLIGKKQQISLATQMVRMILKIDDIRKPGESEE

Entity 9 Entity 9 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	16

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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	—

Resolution resolution	3.70 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	114711

CCT G beta 5 complex intermediate state

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

T-complex protein 1 subunit zeta

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit alpha

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit gamma

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit eta, N-terminally processed

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit theta

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit beta

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit delta

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

T-complex protein 1 subunit epsilon

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

8sgq__assembly_1__model_1

8sgq__assembly_1__model_1 | I(q)

8sgq__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (9)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer