SAXSdb — 9k3h

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

Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit

synthetic construct

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 （P63092,P63096） ;Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT ; × 1 （P62873） Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P63212） scFv16 × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MC5R_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain R； PDBConstruct 1–325； UniProt 1–325

Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

Homo sapiens

UniProt P63092

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit × 1 （P33032） ;Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT ; × 1 （P62873） Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P63212） scFv16 × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GNAS2_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 20–60； UniProt 27–67 Author chain A； PDBConstruct 182–230； UniProt 205–253 Author chain A； PDBConstruct 231–361； UniProt 264–394

Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

Homo sapiens

UniProt P63096

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit × 1 （P33032） ;Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT ; × 1 （P62873） Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P63212） scFv16 × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GNAI1_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–19； UniProt 1–19 Author chain A； PDBConstruct 61–181； UniProt 61–181

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

synthetic construct

UniProt P62873

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit × 1 （P33032） Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 （P63092,P63096） Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 × 1 （P63212） scFv16 × 1	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	3
Chains and sequence ranges	Author chain B； PDBConstruct 7–345； UniProt 2–340

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

Bos taurus

UniProt P63212

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Heteromer	Protein 5	Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit × 1 （P33032） Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short × 1 （P63092,P63096） ;Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT ; × 1 （P62873） scFv16 × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GBG2_BOVIN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain G； PDBConstruct 1–71； UniProt 1–71

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	9k3h
Deposition date deposition_date	2024-10-18
Structure title title	Cryo-EM structure of the unliganded human melanocortin receptor 5 (MC5R)-Gs complex
Keywords keywords	human melanocortin receptor 5, G protein-coupled receptor, unliganded, constitutive activity, MEMBRANE PROTEIN; MEMBRANE 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.

9k3h__assembly_1__model_1

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

Download this curve (.dat)

9k3h__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9k3h__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	36.92 Å
Rg (electron density)	36.76 Å
Total Rg	37.17 Å
Atom count	8835
Residues	1131
Excluded volume	157570 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9k3h__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 (5)

Entity 1 Entity 1 polymer

Description description	Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit
Molecular weight formula_weight	55235.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	R
Atom count atom_count	8835

MNSSFHLHFLDLNLNATEGNLSGPNVKNKSSPCEDMGIAVEVFLTLGVISLLENILVIGAIVKNKNLHSPMYFFVCSLAVADMLVSMSSAWETITIYLLNNKHLVIADAFVRHIDNVFDSMICISVVASMCSLLAIAVDRYVTIFYALRYHHIMTARRSGAIIAGIWAFCTGCGIVFILYSESTYVILCLISMFFAMLFLLVSLYIHMFLLARTHVKRIAALPGASSARQRTSMQGAVTVTMLLGVFTVCWAPFFLHLTLMLSCPQNLYCSRFMSHFNMYLILIMCNSVMDPLIYAFRSQEMRKTFKEIICCRGFRIACSFPRRDGSSGGGGSGGGGSSGVFTLEDFVGDWEQTAAYNLDQVLEQGGVSSLLQNLAVSVTPIQRIVRSGENALKIDIHVIIPYEGLSADQMAQIEEVFKVVYPVDDHHFKVILPYGTLVIDGVTPNMLNYFGRPYEGIAVFDGKKITVTGTLWNGNKIIDERLITPDGSMLFRVTINS

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	Spodoptera frugiperda

Entity 2 Entity 2 polymer

Description description	Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Molecular weight formula_weight	41879.5 kDa
EC 编号 ec_number	3.6.5.-
Mutation mutation	G49D,E50N,L63Y,G226A,A249D,S252D,L272D,A366S,I372A,V375I
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A

MGCTLSAEDKAAVERSKMIEKQLQKDKQVYRATHRLLLLGADNSGKSTIVKQMRIYHVNGYSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLDRIAQPNYIPTQQDVLRTRVKTSGIFETKFQVDKVNFHMFDVGAQRDERRKWIQCFNDVTAIIFVVDSSDYNRLQEALNDFKSIWNNRWLRTISVILFLNKQDLLAEKVLAGKSKIEDYFPEFARYTTPEDATPEPGEDPRVTRAKYFIRDEFLRISTASGDGRHYCYPHFTCSVDTENARRIFNDCRDIIQRMHLRQYELL

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	;Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1,HiBiT ;
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	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	Spodoptera frugiperda

Entity 4 Entity 4 polymer

Description description	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Molecular weight formula_weight	7861.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPFREKKFFCAIL

Source Source

Source organism organism	Bos taurus
Common name common_name	domestic cattle
NCBI taxonomy ID ncbi_taxonomy_id	9913
Host organism host_organism	Spodoptera frugiperda

Entity 5 Entity 5 polymer

Description description	scFv16
Molecular weight formula_weight	30363.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	S

MLLVNQSHQGFNKEHTSKMVSAIVLYVLLAAAAHSAFAVQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYYADTVKGRFTISRDDPKNTLFLQMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVSAGGGGSGGGGSGGGGSADIVMTQATSSVPVTPGESVSISCRSSKSLLHSNGNTYLYWFLQRPGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFGAGTKLEL

Source Source

Source organism organism	synthetic construct
NCBI taxonomy ID ncbi_taxonomy_id	32630
Host organism host_organism	Spodoptera frugiperda

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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	2.86 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	1161357

Cryo-EM structure of the unliganded human melanocortin receptor 5 (MC5R)-Gs complex

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

Melanocortin receptor 5,Melanocortin receptor 5,Melanocortin receptor 5,LgBiT subunit

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) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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) subunit alpha-1,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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

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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

9k3h__assembly_1__model_1

9k3h__assembly_1__model_1 | I(q)

9k3h__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 (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 polymer

Polymer Polymer

Source Source

Entity 5 Entity 5 polymer

Polymer Polymer

Source Source

7. Citations (1)