9NTV: Cpd2-oxyntomodulin-GLP_1R-Gs complex

Cryo-EM structure of cpd2-oxyntomodulin-GLP_1R-Gs complex. Determined by electron microscopy at 2.2 Å resolution. Released 30 Sept 2026.

Method: Electron microscopy
Resolution: 2.2 Å
Organisms: Homo sapiens, Lama glama, synthetic construct
Chains: 6
Atoms: 9,259
Mol. weight: 166.02 kDa
Ligands: A1B00
Released: 30 Sept 2026

Explore 9NTV in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9NTV contains 42 α-helices and 54 β-strands across 6 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 9 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	12-39	28
β-strand	41-46	6	1
β-strand	207-214	8	1
β-strand	217-224	8	1
α-helix	234-238	5
β-strand	243-248	6	1
α-helix	265-278	14
α-helix	280-282	3
β-strand	286-291	6	1
α-helix	294-303	10
α-helix	308-311	4
α-helix	313-317	5
α-helix	332-351	20
β-strand	359-363	5	1
α-helix	371-390	20

Chain B: 2 helices, 28 β-strands

Element	Residues	Length	Sheet
α-helix	3-24	22
α-helix	30-33	4
β-strand	47-51	5	2
β-strand	58-63	6	3
β-strand	69-74	6	3
β-strand	78-83	6	3
β-strand	88-94	7	3
β-strand	100-105	6	4
β-strand	111-116	6	4
β-strand	120-125	6	4
β-strand	134-140	7	4
β-strand	146-151	6	5
β-strand	156-161	6	5
β-strand	165-170	6	5
β-strand	175-181	7	5
β-strand	187-192	6	6
β-strand	198-203	6	6
β-strand	208-212	5	6
β-strand	218-222	5	6
β-strand	229-234	6	7
β-strand	240-245	6	7
β-strand	250-254	5	7
β-strand	259-264	6	7
β-strand	273-278	6	8
β-strand	284-289	6	8
β-strand	294-298	5	8
β-strand	304-308	5	8
β-strand	315-320	6	2
β-strand	327-331	5	2
β-strand	336-339	4	2

Chain G: 5 helices, 0 β-strands

Element	Residues	Length
α-helix	7-22	16
α-helix	30-43	14
α-helix	45-47	3
α-helix	53-55	3
α-helix	56-58	3

Chain N: 3 helices, 11 β-strands

Element	Residues	Length	Sheet
β-strand	3-7	5	9
β-strand	10-12	3	10
β-strand	18-25	8	9
α-helix	29-31	3
β-strand	34-39	6	10
β-strand	45-51	7	10
β-strand	58-60	3	10
α-helix	62-64	3
β-strand	68-73	6	9
β-strand	78-83	6	9
α-helix	88-90	3
β-strand	92-98	7	10
β-strand	118	1	10
β-strand	122-126	5	10

Chain P: 1 helix, 0 β-strands

Element	Residues	Length	Sheet
α-helix	2-28	27

Chain R: 22 helices, 9 β-strands

Element	Residues	Length	Sheet
α-helix	32-52	21
α-helix	54-55	2
α-helix	61	1
β-strand	62	1	11
α-helix	63-64	2
β-strand	65-66	2	12
β-strand	71-72	2	12
β-strand	75	1	11
β-strand	80-84	5	13
α-helix	85-86	2
α-helix	90-92	3
β-strand	99-103	5	13
β-strand	104	1	14
β-strand	110	1	14
β-strand	122	1	13
α-helix	124-126	3
α-helix	137-168	32
α-helix	170-172	3
α-helix	175-203	29
α-helix	211-222	12
α-helix	224-255	32
α-helix	262-275	14
α-helix	278-291	14
α-helix	295-297	3
α-helix	303-337	35
α-helix	342-360	19
α-helix	362-365	4
α-helix	372-374	3
α-helix	377-399	23
α-helix	400-404	5
α-helix	407-419	13

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Guanine nucleotide-binding protein G(s) subunit alpha isoforms short	A	protein	394	Homo sapiens	P63092 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	protein	350	Homo sapiens	P62873 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	G	protein	58	Homo sapiens	P59768 (AlphaFold model)
Nb35	N	protein	128	Lama glama
Oxyntomodulin	P	protein	37	synthetic construct	P01274 (AlphaFold model)
Glucagon-like peptide 1 receptor	R	protein	491	Homo sapiens	P43220

Sequence of entity 1 (A), FASTA

>9NTV_1 Guanine nucleotide-binding protein G(s) subunit alpha isoforms short (chains A)
MGCLGNSKTEDQRNEEKAQREANKKIEKQLQKDKQVYRATHRLLLLGAGESGKNTIVKQM
RILHVNGFNGEGGEEDPQAARSNSDGEKATKVQDIKNNLKEAIETIVAAMSNLVPPVELA
NPENQFRVDYILSVMNVPDFDFPPEFYEHAKALWEDEGVRACYERSNEYQLIDCAQYFLD
KIDVIKQADYVPSDQDLLRCRVLTSGIFETKFQVDKVNFHMFDVGAQRDERRKWIQCFND
VTAIIFVVASSSYNMVIREDNQTNRLQAALKLFDSIWNNKWLRDTSVILFLNKQDLLAEK
VLAGKSKIEDYFPEFARYTTPEDATPEPGEDPRVTRAKYFIRDEFLRISTASGDGRHYCY
PHFTCSVDTENIRRVFNDCRDIIQRMHLRQYELL

Sequence of entity 2 (B), FASTA

>9NTV_2 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 (chains B)
MHHHHHHGSSGSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRT
LRGHLAKIYAMHWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGN
YVACGGLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWD
IETGQQTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDIN
AICFFPNGNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYD
DFNCNVWDALKADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN

Sequence of entity 3 (G), FASTA

>9NTV_3 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 (chains G)
NTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPFR

Sequence of entity 4 (N), FASTA

>9NTV_4 Nb35 (chains N)
QVQLQESGGGLVQPGGSLRLSCAASGFTFSNYKMNWVRQAPGKGLEWVSDISQSGASISY
TGSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCARCPAPFTRDCFDVTSTTYAYRGQ
GTQVTVSS

Sequence of entity 5 (P), FASTA

>9NTV_5 Oxyntomodulin (chains P)
HSQGTFTSDYSKYLDSRRAQDFVQWLMNTKRNKNNIA

Sequence of entity 6 (R), FASTA

>9NTV_6 Glucagon-like peptide 1 receptor (chains R)
MKTIIALSYIFCLVFADYKDDDDLEVLFQGPARPQGATVSLWETVQKWREYRRQCQRSLT
EDPPPATDLFCNRTFDEYACWPDGEPGSFVNVSCPWYLPWASSVPQGHVYRFCTAEGLWL
QKDNSSLPWRDLSECEESKRGERSSPEEQLLFLYIIYTVGYALSFSALVIASAILLGFRH
LHCTRNYIHLNLFASFILRALSVFIKDAALKWMYSTAAQQHQWDGLLSYQDSLSCRLVFL
LMQYCVAANYYWLLVEGVYLYTLLAFSVFSEQWIFRLYVSIGWGVPLLFVVPWGIVKYLY
EDEGCWTRNSNMNYWLIIRLPILFAIGVNFLIFVRVICIVVSKLKANLMCKTDIKCRLAK
STLTLIPLLGTHEVIFAFVMDEHARGTLRFIKLFTELSFTSFQGLMVAILYCFVNNEVQL
EFRKSWERWRLEHLHIQRDSSMKPLKCPTSSLSSGATAGSSMYTATCQASCSPAGLEVLF
QGPHHHHHHHH

Ligands and cofactors

ID	Name	Formula	Copies
A1B00	N-tert-butyl-6,7-dichloro-3-(methanesulfonyl)quinoxalin-2-amine	C13 H15 Cl2 N3 O2 S	1

Primary citation

Cryo-EM structure of cpd2-oxyntomodulin-GLP_1R-Gs complex. Zhang, X., Belousoff, M.J., Sexton, P.M. et al. To be published.

Other PDB entries of the same protein (UniProt P63092 (AlphaFold model), which also has an AlphaFold model), best resolution first:

7BPH 1.57 Å, Crystal structure of GppNHp-bound GNAS in complex with the cyclic peptide inhibitor GN13
6AU6 1.7 Å, Crystal structure of GDP-bound human GNAS R201C mutant
8F0K 1.9 Å, Human Amylin3 Receptor in complex with Gs and Pramlintide analogue peptide San385
7E5E 1.95 Å, Crystal structure of GDP-bound GNAS in complex with the cyclic peptide inhibitor GD20
7MBX 1.95 Å, Human Cholecystokinin 1 receptor (CCK1R) Gs complex
8F0J 2.0 Å, Calcitonin Receptor in complex with Gs and Pramlintide analogue peptide San45
8F2B 2.0 Å, Amylin 3 Receptor in complex with Gs and Pramlintide analogue peptide San45
9XXT 2.0 Å, Cryo-EM structure of lysophosphatidylserine (18:0)-bound GPR174-Gs complex
6X18 2.1 Å, GLP-1 peptide hormone bound to Glucagon-Like peptide-1 (GLP-1) Receptor
6X19 2.1 Å, Non peptide agonist CHU-128, bound to Glucagon-Like peptide-1 (GLP-1) Receptor
9NTU 2.1 Å, Cryo-EM structure of BETP-GLP-1(9-36)-GLP-1R-Gs complex
7RTB 2.14 Å, Peptide-19 bound to the Glucagon-Like Peptide-1 Receptor (GLP-1R)

Browse structure collections

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