7EJX: GPR88-Gi1 signaling complex

Structure of the GPR88-Gi1 signaling complex bound to a synthetic ligand. Determined by electron microscopy at 2.4 Å resolution. Released 13 Apr 2022.

Method: Electron microscopy
Resolution: 2.4 Å
Organisms: Homo sapiens, Mus musculus
Chains: 5
Atoms: 8,334
Mol. weight: 157.26 kDa
Ligands: CLR, J5F
Released: 13 Apr 2022

Explore 7EJX in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

7EJX contains 32 α-helices and 59 β-strands across 5 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	7-31	25
β-strand	34-40	7	1
α-helix	46-52	7
β-strand	185-191	7	1
β-strand	194-200	7	1
α-helix	212-215	4
β-strand	220-226	7	1
α-helix	242-254	13
α-helix	257-259	3
β-strand	264-269	6	1
α-helix	271-280	10
α-helix	283-285	3
α-helix	296-309	14
β-strand	319-322	4	1
α-helix	330-351	22

Chain B: 3 helices, 28 β-strands

Element	Residues	Length	Sheet
α-helix	5-24	20
α-helix	30-33	4
α-helix	38-39	2
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	89-94	6	3
β-strand	100-105	6	4
β-strand	111-116	6	4
β-strand	121-125	5	4
β-strand	134-139	6	4
β-strand	146-153	8	5
β-strand	156-161	6	5
β-strand	166-170	5	5
β-strand	175-180	6	5
β-strand	187-192	6	6
β-strand	198-203	6	6
β-strand	208-212	5	6
β-strand	217-222	6	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	303-308	6	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	9-23	15
α-helix	30-43	14
α-helix	45-47	3
α-helix	53-55	3
α-helix	56-58	3

Chain R: 10 helices, 0 β-strands

Element	Residues	Length
α-helix	38-58	21
α-helix	60-62	3
α-helix	66-84	19
α-helix	114-143	30
α-helix	146-152	7
α-helix	155-174	20
α-helix	192-227	36
α-helix	284-308	25
α-helix	315-337	23
α-helix	341-350	10

Chain S: 5 helices, 25 β-strands

Element	Residues	Length	Sheet
β-strand	4-7	4	9
β-strand	11-12	2	10
β-strand	17-24	8	9
α-helix	29-31	3
β-strand	33-39	7	11
β-strand	45-51	7	11
α-helix	53-55	3
β-strand	58-60	3	11
β-strand	68-73	6	9
β-strand	78-84	7	9
α-helix	88-90	3
β-strand	92-99	8	11
β-strand	110-111	2	11
β-strand	115-117	3	11
β-strand	118-119	2	10
β-strand	128-129	2	12
β-strand	134-136	3	13
β-strand	143-149	7	12
β-strand	154	1	14
β-strand	160	1	14
β-strand	162-167	6	13
β-strand	174-178	5	13
β-strand	182-183	2	13
α-helix	184	1
β-strand	191-196	6	12
β-strand	199-204	6	12
β-strand	214-219	6	13
α-helix	225	1
β-strand	226-227	2	13
β-strand	231-234	4	13

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Probable G-protein coupled receptor 88	R	protein	384	Homo sapiens	Q9GZN0 (AlphaFold model)
Guanine nucleotide-binding protein G(i) subunit alpha-1	A	protein	354	Homo sapiens	P63096 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	B	protein	357	Homo sapiens	P62873 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	G	protein	71	Homo sapiens	P59768 (AlphaFold model)
scFv16	S	protein	259	Mus musculus

Sequence of entity 1 (R), FASTA

>7EJX_1 Probable G-protein coupled receptor 88 (chains R)
MTNSSSTSTSSTTGGSLLLLCEEEESWAGRRIPVSLLYSGLAIGGTLANGMVIYLVSSFR
KLQTTSNAFIVNGCAADLSVCALWMPQEAVLGLLPTGSAEPPADWDGAGGSYRLLRGGLL
GLGLTVSLLSHCLVALNRYLLITRAPATYQALYQRRHTAGMLALSWALALGLVLLLPPWA
PRPGAAPPRIHYPALLAAAALLAQTALLLHCYLGIVRRVRVSVKRVSVLNFHLLHQLPGC
AAAAAAFPGAQHAPGPGGAAHPAQAQPLPPALHPRRAQRRLSGLSVLLLCCVFLLATQPL
VWVSLASGFSLPVPWGVQAASWLLCCALSALNPLLYTWRNEEFRRSVRSVLPGVGDAAAA
AVAATAVPAVSQAQLGTRAAGQHW

Sequence of entity 2 (A), FASTA

>7EJX_2 Guanine nucleotide-binding protein G(i) subunit alpha-1 (chains A)
MGCTLSAEDKAAVERSKMIDRNLREDGEKAAREVKLLLLGAGESGKSTIVKQMKIIHEAG
YSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMT
AELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLDRIAQPNYIPTQQDVLRTRVK
TTGIVETHFTFKDLHFKMFDVGGQRSERKKWIHCFEGVTAIIFCVALSDYDLVLAEDEEM
NRMHESMKLFDSICNNKWFTDTSIILFLNKKDLFEEKIKKSPLTICYPEYAGSNTYEEAA
AYIQCQFEDLNKRKDTKEIYTHFTCATDTKNVQFVFDAVTDVIIKNNLKDCGLF

Sequence of entity 3 (B), FASTA

>7EJX_3 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 (chains B)
HHHHHHLEVLFQGPGSSGSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRI
QMRTRRTLRGHLAKIYAMHWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTC
AYAPSGNYVACGGLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGD
TTCALWDIETGQQTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFT
GHESDINAICFFPNGNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGR
LLLAGYDDFNCNVWDALKADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN

Sequence of entity 4 (G), FASTA

>7EJX_4 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 (chains G)
MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENP
FREKKFFCAIL

Sequence of entity 5 (S), FASTA

>7EJX_5 scFv16 (chains S)
DVQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYY
ADTVKGRFTISRDDPKNTLFLQMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVS
SGGGGSGGGGSGGGGSDIVMTQATSSVPVTPGESVSISCRSSKSLLHSNGNTYLYWFLQR
PGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFG
AGTKLELKAAAHHHHHHHH

Ligands and cofactors

ID	Name	Formula	Copies
CLR	Cholesterol	C27 H46 O	3
J5F	(1R,2R)-N-[(2S,3S)-2-azanyl-3-methyl-pentyl]-N-[4-(4-propylphenyl)phenyl]-2-pyr…	C30 H37 N3 O	1

Primary citation

Activation and allosteric regulation of the orphan GPR88-Gi1 signaling complex. Chen, G., Xu, J., Inoue, A. et al. Nat Commun (2022) 13:2375-2375. DOI 10.1038/s41467-022-30081-5 · PubMed

Other PDB entries of the same protein (UniProt Q9GZN0 (AlphaFold model), which also has an AlphaFold model), best resolution first:

7WZ4 3.0 Å, Structure of an orphan GPCR-G protein signaling complex

Browse structure collections

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