SAXSdb — 8x8l

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

Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Guanine nucleotide-binding protein G(i) subunit alpha × 1 Cortistatin × 1 （O00230） ScFv16 × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P59768） Somatostatin receptor type 5 × 1 （P35346）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GBB1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 7–345； UniProt 2–340

Cortistatin

OrganismNot specified

UniProt O00230

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Guanine nucleotide-binding protein G(i) subunit alpha × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 （P62873） ScFv16 × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P59768） Somatostatin receptor type 5 × 1 （P35346）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CORT_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–17； UniProt 89–105

Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

Homo sapiens

UniProt P59768

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Guanine nucleotide-binding protein G(i) subunit alpha × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 （P62873） Cortistatin × 1 （O00230） ScFv16 × 1 Somatostatin receptor type 5 × 1 （P35346）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GBG2_HUMAN
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain G； PDBConstruct 1–70； UniProt 2–71

Somatostatin receptor type 5

Homo sapiens

UniProt P35346

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 6	Guanine nucleotide-binding protein G(i) subunit alpha × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 × 1 （P62873） Cortistatin × 1 （O00230） ScFv16 × 1 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P59768）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SSR5_HUMAN
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain R； PDBConstruct 1–364； UniProt 1–364

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	8x8l
Deposition date deposition_date	2023-11-27
Structure title title	Cryo-EM structure of the cortistatin 17-bound Somatostatin receptor 5-Gi protein complex
Keywords keywords	Cryo-EM, GPCR, Somatostatin receptor 5, cortistatin 17, Gi, complex, SIGNALING PROTEIN; SIGNALING 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.

8x8l__assembly_1__model_1

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

Download this curve (.dat)

8x8l__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8x8l__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	37.19 Å
Rg (electron density)	37.11 Å
Total Rg	37.42 Å
Atom count	17555
Residues	1140
Excluded volume	158030 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8x8l__assembly_1__model_1`	hexameric （6）	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	Guanine nucleotide-binding protein G(i) subunit alpha
Molecular weight formula_weight	41510.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	17555

GCTLSAEDKAAVERSKMIEKQLQKDKQVYRATHRLLLLGADNSGKSTIVKQMRIYHVNGYSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLDRIAQPNYIPTQQDVLRTRVKTSGIFETKFQVDKVNFHMFDVGAQRDERRKWIQCFNDVTAIIFVVDSSDYNRLQEALNDFKSIWNNRWLRTISVILFLNKQDLLAEKVLAGKSKIEDYFPEFARYTTPEDATPEPGEDPRVTRAKYFIRDEFLRISTASGDGRHYCYPHFTCSVDTENARRIFNDVTDIIIKMNLRDCGLF

Source Source

Source organism organism	Homo sapiens
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 2 Entity 2 polymer

Description description	Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Molecular weight formula_weight	40227.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MGSLLQSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYAMHWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQQTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPNGNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALKADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWNGSSGGGGSGGGGSSGVSGWRLFKKIS

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 3 Entity 3 polymer

Description description	Cortistatin
Molecular weight formula_weight	2157.5 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

DRMPCRNFFWKTFSSCK

Entity 4 Entity 4 polymer

Description description	ScFv16
Molecular weight formula_weight	26480.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

DVQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYYADTVKGRFTISRDDPKNTLFLQMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVSSGGGGSGGGGSGGGSADIVMTQATSSVPVTPGESVSISCRSSKSLLHSNGNTYLYWFLQRPGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFGAGTKLELK

Source Source

Source organism organism	Mus musculus
NCBI taxonomy ID ncbi_taxonomy_id	10090
Host organism host_organism	Trichoplusia ni

Entity 5 Entity 5 polymer

Description description	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Molecular weight formula_weight	7729.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

ASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPFREKKFFCAIL

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 6 Entity 6 polymer

Description description	Somatostatin receptor type 5
Molecular weight formula_weight	39249.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	R

MEPLFPASTPSWNASSPGAASGGGDNRTLVGPAPSAGARAVLVPVLYLLVCAAGLGGNTLVIYVVLRFAKMKTVTNIYILNLAVADVLYMLGLPFLATQNAASFWPFGPVLCRLVMTLDGVNQFTSVFCLTVMSVDRYLAVVHPLSSARWRRPRVAKLASAAAWVLSLCMSLPLLVFADVQEGGTCNASWPEPVGLWGAVFIIYTAVLGFFAPLLVICLCYLLIVVKVRAAGVRVGCVRRRSERKVTRMVLVLVLVFAGCWLPFFTVNIVNLAVALPQEPASAGLYFFVVILSYANSCANPVLYGFLSDNFRQSFQKVLCLRKGSGAKDADATEPRPDRIRQQQEATPPAHRAAANGLMQTSKL

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

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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	2.70 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	320649

Cryo-EM structure of the cortistatin 17-bound Somatostatin receptor 5-Gi protein complex

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

Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-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

Cortistatin

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-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

Somatostatin receptor 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

8x8l__assembly_1__model_1

8x8l__assembly_1__model_1 | I(q)

8x8l__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 (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

Entity 4 Entity 4 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

Entity 6 Entity 6 polymer

Polymer Polymer

Source Source

7. Citations (1)