8JXT: Histamine-bound H4R/Gi complex

Histamine-bound H4R/Gi complex. Determined by electron microscopy at 3.07 Å resolution. Released 20 Mar 2024.

Method: Electron microscopy
Resolution: 3.07 Å
Organism: Homo sapiens
Chains: 5
Atoms: 8,298
Mol. weight: 157.25 kDa
Ligands: PO4, HSM
Released: 20 Mar 2024

Explore 8JXT in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8JXT contains 29 α-helices and 55 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 B: 9 helices, 8 β-strands

Element	Residues	Length	Sheet
α-helix	7-29	23
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
β-strand	233	1	2
β-strand	241	1	2
α-helix	242-254	13
α-helix	257-259	3
β-strand	263-269	7	1
α-helix	272-275	4
α-helix	283-285	3
α-helix	296-308	13
β-strand	319-323	5	1
α-helix	330-350	21

Chain C: 4 helices, 27 β-strands

Element	Residues	Length	Sheet
α-helix	5-25	21
α-helix	30-32	3
α-helix	34-36	3
α-helix	38-39	2
β-strand	47-51	5	3
β-strand	58-63	6	4
β-strand	69-74	6	4
β-strand	78-83	6	4
β-strand	88-94	7	4
β-strand	100-105	6	5
β-strand	111-116	6	5
β-strand	120-125	6	5
β-strand	134-140	7	5
β-strand	146-153	8	6
β-strand	156-161	6	6
β-strand	165-170	6	6
β-strand	175-181	7	6
β-strand	187-192	6	7
β-strand	198-203	6	7
β-strand	207-212	6	7
β-strand	218-223	6	7
β-strand	229-234	6	8
β-strand	241-245	5	8
β-strand	249-253	5	8
β-strand	260-264	5	8
β-strand	273-277	5	9
β-strand	284-289	6	9
β-strand	294-298	5	9
β-strand	315-320	6	3
β-strand	327-331	5	3
β-strand	336-339	4	3

Chain D: 3 helices, 0 β-strands

Element	Residues	Length
α-helix	11-23	13
α-helix	30-43	14
α-helix	53-55	3

Chain E: 1 helix, 20 β-strands

Element	Residues	Length	Sheet
β-strand	3-7	5	10
β-strand	10-12	3	11
β-strand	15-25	11	10
β-strand	33-39	7	11
β-strand	45-51	7	11
α-helix	53-55	3
β-strand	58	1	11
β-strand	68-73	6	10
β-strand	78-86	9	10
β-strand	92-99	8	11
β-strand	111	1	11
β-strand	115-119	5	11
β-strand	142-143	2	12
β-strand	147-149	3	13
β-strand	156-161	6	12
β-strand	175-180	6	13
β-strand	187-190	4	13
β-strand	204-209	6	12
β-strand	212-217	6	12
β-strand	226-232	7	13
β-strand	244-247	4	13

Chain R: 12 helices, 0 β-strands

Element	Residues	Length
α-helix	15-42	28
α-helix	49-77	29
α-helix	84-117	34
α-helix	120-123	4
α-helix	131-152	22
α-helix	172-179	8
α-helix	180-184	5
α-helix	185-202	18
α-helix	294-328	35
α-helix	338-348	11
α-helix	350-361	12
α-helix	363-370	8

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Guanine nucleotide-binding protein G(i) subunit alpha-1	B	protein	354	Homo sapiens	P63096 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	C	protein	345	Homo sapiens	P62873 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	D	protein	71	Homo sapiens	P59768 (AlphaFold model)
scFv16	E	protein	247	Homo sapiens
Histamine H4 receptor	R	protein	390	Homo sapiens	Q9H3N8 (AlphaFold model)

Sequence of entity 1 (B), FASTA

>8JXT_1 Guanine nucleotide-binding protein G(i) subunit alpha-1 (chains B)
MGCTLSAEDKAAVERSKMIDRNLREDGEKAAREVKLLLLGAGESGKSTIVKQMKIIHEAG
YSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMT
AELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLDRIAQPNYIPTQQDVLRTRVK
TTGIVETHFTFKDLHFKMFDVGAQRSERKKWIHCFEGVTAIIFCVALSDYDLVLAEDEEM
NRMHESMKLFDSICNNKWFTDTSIILFLNKKDLFEEKIKKSPLTICYPEYAGSNTYEEAA
AYIQCQFEDLNKRKDTKEIYTHFTCSTDTKNVQFVFDAVTDVIIKNNLKDCGLF

Sequence of entity 2 (C), FASTA

>8JXT_2 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 (chains C)
MGSLLQSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHL
AKIYAMHWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACG
GLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQ
QTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFF
PNGNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCN
VWDALKADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN

Sequence of entity 3 (D), FASTA

>8JXT_3 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 (chains D)
MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENP
FREKKFFCAIL

Sequence of entity 4 (E), FASTA

>8JXT_4 scFv16 (chains E)
VQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYYA
DTVKGRFTISRDDPKNTLFLQMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVSA
GGGGSGGGGSGGGGSADIVMTQATSSVPVTPGESVSISCRSSKSLLHSNGNTYLYWFLQR
PGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFG
AGTKLEL

Sequence of entity 5 (R), FASTA

>8JXT_5 Histamine H4 receptor (chains R)
MPDTNSTINLSLSTRVTLAFFMSLVAFAIMLGNALVILAFVVDKNLRHRSSYFFLNLAIS
DFFVGVISIPLYIPHTLFEWDFGKEICVFWLTTDYLLCTASVYNIVLISYDRYLSVSNAV
SYRTQHTGVLKIVTLMVAVWVLAFLVNGPMILVSESWKDEGSECEPGFFSEWYILAITSF
LEFVIPVILVAYFNMNIYWSLWKRDHLSRCQSHPGLTAVSSNICGHSFRGRLSSRRSLSA
STEVPASFHSERQRRKSSLMFSSRTKMNSNTIASKMGSFSQSDSVALHQREHVELLRARR
LAKSLAILLGVFAVCWAPYSLFTIVLSFYSSATGPKSVWYRIAFWLQWFNSFVNPLLYPL
CHKRFQKAFLKIFCIKKQPLPSQHSRSVSS

Ligands and cofactors

ID	Name	Formula	Copies
PO4	Phosphate ion	O4 P	1
HSM	Histamine	C5 H9 N3	1

Primary citation

Structural basis of ligand recognition and design of antihistamines targeting histamine H 4 receptor. Xia, R., Shi, S., Xu, Z. et al. Nat Commun (2024) 15:2493-2493. DOI 10.1038/s41467-024-46840-5 · PubMed

Other PDB entries of the same protein (UniProt P63096 (AlphaFold model), which also has an AlphaFold model), best resolution first:

6CRK 2.0 Å, Heterotrimeric G-protein in complex with an antibody fragment
3UMR 2.04 Å, Crystal structure of the G202D mutant of human G-alpha-i1
9P7Z 2.1 Å, NTSR1-Gi-NTS(8-13) Complex in the Canonical, AHD Open State (C-Open-Apo)
2OM2 2.2 Å, Crystal Structure Of Human G[alpha]i1 Bound To The Goloco Motif Of Rgs14
8YN9 2.3 Å, Cryo-EM structure of histamine H4 receptor in complex with histamine and Gi
9HYI 2.3 Å, DP81-bound serotonin 5-HT1A receptor - Gi Protein Complex
9O36 2.3 Å, CryoEM structure of mu-opioid receptor - Gi protein complex bound to fluornitrazene (FNZ)
9P80 2.3 Å, NTSR1-Gi-NTS(8-13) Complex in the Non-Canonical, AHD Open State (NC-Open-Apo)
8XXV 2.33 Å, Cryo-EM Structure of the Prostaglandin D2 Receptor 2-indomethacin Coupled to G Protein
3UMS 2.34 Å, Crystal structure of the G202A mutant of human G-alpha-i1
3ONW 2.38 Å, Structure of a G-alpha-i1 mutant with enhanced affinity for the RGS14 GoLoco motif.
20ZG 2.4 Å, Cryo-EM structure of the human neurotensin receptor 1 (hNTSR1)-Gi1 complex in the…

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