9L3W: Chemokine-like receptor 1

Cryo-EM structure of the chemokine-like receptor 1 in complex with chemerin and Gi1. Determined by electron microscopy at 3.5 Å resolution. Released 12 Mar 2025.

Method: Electron microscopy
Resolution: 3.5 Å
Organism: Homo sapiens
Chains: 5
Atoms: 7,262
Mol. weight: 149.02 kDa
Released: 12 Mar 2025

Explore 9L3W in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

9L3W contains 32 α-helices and 42 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	9-30	22
β-strand	34-40	7	1
β-strand	185-190	6	1
β-strand	195-200	6	1
α-helix	208-210	3
α-helix	212-215	4
β-strand	220-226	7	1
α-helix	227-229	3
α-helix	242-254	13
α-helix	257-259	3
β-strand	263-269	7	1
α-helix	271-277	7
α-helix	296-309	14
β-strand	319-323	5	1
α-helix	331-351	21

Chain B: 4 helices, 28 β-strands

Element	Residues	Length	Sheet
α-helix	7-25	19
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	88-94	7	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
α-helix	145	1
β-strand	146-151	6	5
β-strand	156-161	6	5
β-strand	165-170	6	5
β-strand	176-180	5	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	303-308	6	8
β-strand	315-320	6	2
β-strand	327-331	5	2
β-strand	336-339	4	2

Chain C: 4 helices, 0 β-strands

Element	Residues	Length
α-helix	10-22	13
α-helix	30-43	14
α-helix	45-47	3
α-helix	53-55	3

Chain L: 4 helices, 6 β-strands

Element	Residues	Length	Sheet
α-helix	23-34	12
β-strand	45-48	4	9
β-strand	65	1	10
β-strand	69	1	11
β-strand	73-78	6	9
α-helix	81-83	3
β-strand	99	1	11
β-strand	103	1	10
α-helix	133-136	4
α-helix	145-147	3

Chain R: 11 helices, 2 β-strands

Element	Residues	Length	Sheet
α-helix	38-66	29
α-helix	73-100	28
α-helix	112-142	31
α-helix	144-149	6
α-helix	153-176	24
β-strand	179-181	3	12
β-strand	188-190	3	12
α-helix	221-225	5
α-helix	226-230	5
α-helix	231-249	19
α-helix	257-282	26
α-helix	291-316	26
α-helix	321-329	9

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
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	340	Homo sapiens	P62873 (AlphaFold model)
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	C	protein	71	Homo sapiens	P59768 (AlphaFold model)
Retinoic acid receptor responder protein 2	L	protein	137	Homo sapiens	Q99969 (AlphaFold model)
Chemerin-like receptor 1	R	protein	419	Homo sapiens	Q99788

Sequence of entity 1 (A), FASTA

>9L3W_1 Guanine nucleotide-binding protein G(i) subunit alpha-1 (chains A)
MGCTLSAEDKAAVERSKMIDRNLREDGEKAAREVKLLLLGAGESGKCTIVKQMKIIHEAG
YSEEECKQYKAVVYSNTIQSIIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMT
AELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLDRIAQPNYIPTQQDVLRTRVK
TTGIVETHFTFKDLHFKMFDVTAQRSERKKWIHCFEGVTAIIFCVALSDYDLVLAEDEEM
NRMHASMKLFDSICNNKWFTDTSIILFLNKKDLFEEKIKKSPLTICYPEYAGSNTYEEAA
AYIQCQFEDLNKRKDTKEIYTHFTCSTDTKNVQFVFDAVTDVIIKNNLKDCGLF

Sequence of entity 2 (B), FASTA

>9L3W_2 Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 (chains B)
MSELDQLRQEAEQLKNQIRDARKACADATLSQITNNIDPVGRIQMRTRRTLRGHLAKIYA
MHWGTDSRLLVSASQDGKLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNI
CSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQIVTSSGDTTCALWDIETGQQTTTF
TGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPNGNA
FATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDAL
KADRAGVLAGHDNRVSCLGVTDDGMAVATGSWDSFLKIWN

Sequence of entity 3 (C), FASTA

>9L3W_3 Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 (chains C)
MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENP
FREKKFFCAIL

Sequence of entity 4 (L), FASTA

>9L3W_4 Retinoic acid receptor responder protein 2 (chains L)
ELTEAQRRGLQVALEEFHKHPPVQWAFQETSVESAVDTPFPAGIFVRLEFKLQQTSCRKR
DWKKPECKVRPNGRKRKCLACIKLGSEDKVLGRLVHCPIETQVLREAEEHQETQCLRVQR
AGEDPHSFYFPGQFAFS

Sequence of entity 5 (R), FASTA

>9L3W_5 Chemerin-like receptor 1 (chains R)
MRMEDEDYNTSISYGDEYPDYLDSIVVLEDLSPLEARVTRIFLVVVYSIVCFLGILGNGL
VIIIATFKMKKTVNMVWFLNLAVADFLFNVFLPIHITYAAMDYHWVFGTAMCKISNFLLI
HNMFTSVFLLTIISSDRCISVLLPVWSQNHRSVRLAYMACMVIWVLAFFLSSPSLVFRDT
ANLHGKISCFNNFSLSTPGSSSWPTHSQMDPVGYSRHMVVTVTRFLCGFLVPVLIITACY
LTIVCKLQRNRLAKTKKPFKIIVTIIITFFLCWCPYHTLNLLELHHTAMPGSVFSLGLPL
ATALAIANSCMNPILYVFMGQDFKKFKVALFSRLVNALSEDTGHSSYPSHRSFTKMSSMN
ERTSMNERETGMLEFLEVLFQGPWSHPQFEKGGGSGGGSGGSAWSHPQFEKDYKDDDDK

Primary citation

Structural insights into the distinct ligand recognition and signaling of the chemerin receptors CMKLR1 and GPR1. Lin, X., Zhao, L., Cai, H. et al. Protein Cell (2025) 16:381-385. DOI 10.1093/procel/pwae073 · 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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