GPR4 - Gq

GPCR CLASS (FAMILY)

Class A (Rhodopsin)

GPCR SPECIES

Homo sapiens

GPCR PREFERRED CHAIN

R

G PROTEIN (FAMILY)

Gq/11

G PROTEIN SPECIES

Homo sapiens

PDB CODE

9JCP

RESOLUTION

2.6 Å

REFERENCE

PUBLICATION DATE

July 9, 2025

3D VIEW

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LIGAND INTERACTIONS

40 interactions (Click to see)

LIGANDS

Lysophosphatidylcholine (LPC) - PAM pubchem

PHYSIOLOGICAL LIGANDS

No physiological ligands available



GPCR - G protein interface interactions



The biflare plot is a modified version of a flareplot, where lines are drawn between an inner concentric circle (Gα residues) and an outer concentric circle (GPCR residues) depicting the interface interactions.
Different interaction types are shown with different line types (aromatic - solid, hydrophobic - dashed, ionic - long dashed, polar - dotted, Van der Waals - dash-dot).
The interactive features include filtering on interaction type, segments, residues and backbone or sidechain interactions.


Interaction definitions:

Residue numbering:

GPCR-G protein backbone (bb) or sidechain (sc):





Structures

Sequence Color

Gα, Gβ, Gγ, GPCR
Interaction cut-off: strict (stick), loose (line)

NGL is a WebGL based 3D viewer powered by MMTF.

Interaction
type		 GPCR
Segment
AA
Number		 Generic
number		 Gα
segment
AA
Number		 Generic
number
Hydrophobic H8 N 290 8x47 G.H5 V 361 G.H5.26
Van-der-waals H8 N 290 8x47 G.H5 V 361 G.H5.26
Polar TM5 S 211 5x68 G.H5 D 348 G.H5.13
Polar ICL3 S 213 - G.S6 Y 327 G.S6.02
Hydrophobic ICL3 S 213 - G.S6 Y 327 G.S6.02
Van-der-waals ICL3 S 213 - G.S6 Y 327 G.S6.02
Hydrophobic TM5 I 204 5x61 G.H5 L 360 G.H5.25
Hydrophobic TM3 V 119 3x54 G.H5 L 360 G.H5.25
Van-der-waals TM3 V 119 3x54 G.H5 L 360 G.H5.25
Polar TM2 E 51 2x38 G.H5 Y 358 G.H5.23
Hydrophobic TM2 E 51 2x38 G.H5 Y 358 G.H5.23
Van-der-waals TM2 E 51 2x38 G.H5 Y 358 G.H5.23
Hydrophobic TM3 D 114 3x49 G.H5 Y 358 G.H5.23
Van-der-waals TM3 D 114 3x49 G.H5 Y 358 G.H5.23
Polar TM6 E 215 6x26 G.h4s6 G 322 G.h4s6.11
Hydrophobic TM6 E 215 6x26 G.h4s6 G 322 G.h4s6.11
Van-der-waals TM6 E 215 6x26 G.h4s6 G 322 G.h4s6.11
Hydrophobic TM2 L 52 2x39 G.H5 Y 358 G.H5.23
Van-der-waals TM2 L 52 2x39 G.H5 Y 358 G.H5.23
Hydrophobic ICL2 P 122 - G.H5 L 351 G.H5.16
Van-der-waals ICL2 P 122 - G.H5 L 351 G.H5.16
Polar TM4 R 130 4x38 G.HN Q 28 G.HN.52
Hydrophobic TM4 R 130 4x38 G.HN Q 28 G.HN.52
Van-der-waals TM4 R 130 4x38 G.HN Q 28 G.HN.52
Hydrophobic TM6 I 222 6x33 G.H5 L 355 G.H5.20
Polar TM1 Q 45 1x60 G.H5 N 359 G.H5.24
Van-der-waals TM1 Q 45 1x60 G.H5 N 359 G.H5.24
Polar TM3 R 115 3x50 G.H5 Y 358 G.H5.23
Hydrophobic TM3 R 115 3x50 G.H5 Y 358 G.H5.23
Van-der-waals TM3 R 115 3x50 G.H5 Y 358 G.H5.23
Polar TM3 A 118 3x53 G.H5 N 354 G.H5.19
Hydrophobic TM3 A 118 3x53 G.H5 N 354 G.H5.19
Van-der-waals TM3 A 118 3x53 G.H5 N 354 G.H5.19
Hydrophobic TM3 V 119 3x54 G.H5 L 355 G.H5.20
Hydrophobic TM6 L 225 6x36 G.H5 L 360 G.H5.25
Hydrophobic ICL2 L 123 - G.H5 K 347 G.H5.12
Van-der-waals ICL2 L 123 - G.H5 K 347 G.H5.12
Hydrophobic TM6 I 222 6x33 G.H5 V 361 G.H5.26
Hydrophobic ICL2 P 122 - G.H5 K 347 G.H5.12
Van-der-waals ICL2 P 122 - G.H5 K 347 G.H5.12
Polar H8 N 290 8x47 G.H5 N 359 G.H5.24
Hydrophobic H8 N 290 8x47 G.H5 N 359 G.H5.24
Van-der-waals H8 N 290 8x47 G.H5 N 359 G.H5.24
Hydrophobic ICL2 L 123 - G.H5 F 343 G.H5.08
Van-der-waals ICL2 L 123 - G.H5 F 343 G.H5.08
Hydrophobic ICL3 S 213 - G.h4s6 I 325 G.h4s6.20
Van-der-waals ICL3 S 213 - G.h4s6 I 325 G.h4s6.20
Hydrophobic TM6 K 221 6x32 G.H5 V 361 G.H5.26
Hydrophobic H8 E 291 8x48 G.H5 V 361 G.H5.26
Hydrophobic ICL2 L 123 - G.S3 V 194 G.S3.01
Van-der-waals ICL2 L 123 - G.S3 V 194 G.S3.01
Hydrophobic TM3 A 118 3x53 G.H5 Y 358 G.H5.23
Van-der-waals TM3 A 118 3x53 G.H5 Y 358 G.H5.23
Polar ICL1 R 49 - G.hns1 R 31 G.hns1.02
Van-der-waals ICL1 R 49 - G.hns1 R 31 G.hns1.02
Hydrophobic ICL2 L 123 - G.H5 C 346 G.H5.11
Polar ICL3 S 213 - G.H5 Q 352 G.H5.17
Hydrophobic ICL3 S 213 - G.H5 Q 352 G.H5.17
Van-der-waals ICL3 S 213 - G.H5 Q 352 G.H5.17
Polar TM1 Q 48 1x63 G.hns1 R 31 G.hns1.02
Van-der-waals TM1 Q 48 1x63 G.hns1 R 31 G.hns1.02
Polar ICL2 R 129 - G.H5 Y 358 G.H5.23
Hydrophobic ICL2 R 129 - G.H5 Y 358 G.H5.23
Van-der-waals ICL2 R 129 - G.H5 Y 358 G.H5.23
Hydrophobic TM5 A 207 5x64 G.H5 L 351 G.H5.16
Van-der-waals TM5 A 207 5x64 G.H5 L 351 G.H5.16
Hydrophobic TM3 V 119 3x54 G.H5 L 351 G.H5.16
Van-der-waals TM3 V 119 3x54 G.H5 L 351 G.H5.16
Polar ICL3 T 214 - G.H5 Q 352 G.H5.17
Hydrophobic ICL3 T 214 - G.H5 Q 352 G.H5.17
Van-der-waals ICL3 T 214 - G.H5 Q 352 G.H5.17
Hydrophobic TM5 V 208 5x65 G.H5 L 355 G.H5.20
Van-der-waals TM5 V 208 5x65 G.H5 L 355 G.H5.20
Hydrophobic TM6 E 218 6x29 G.H5 V 361 G.H5.26
Van-der-waals TM6 E 218 6x29 G.H5 V 361 G.H5.26
Hydrophobic ICL2 P 122 - G.H5 I 350 G.H5.15
Van-der-waals ICL2 P 122 - G.H5 I 350 G.H5.15
Polar TM2 N 50 2x37 G.H5 E 357 G.H5.22
Van-der-waals TM2 N 50 2x37 G.H5 E 357 G.H5.22
Hydrophobic TM3 R 115 3x50 G.H5 L 360 G.H5.25
Van-der-waals TM3 R 115 3x50 G.H5 L 360 G.H5.25
Hydrophobic ICL2 L 123 - G.S1 L 34 G.S1.02
Van-der-waals ICL2 L 123 - G.S1 L 34 G.S1.02
Hydrophobic ICL2 L 123 - G.H5 I 350 G.H5.15
Van-der-waals ICL2 L 123 - G.H5 I 350 G.H5.15
Hydrophobic ICL3 S 213 - G.H5 D 348 G.H5.13
Van-der-waals ICL3 S 213 - G.H5 D 348 G.H5.13