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- EMDB-65573: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 recept... -

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Entry
Database: EMDB / ID: EMD-65573
TitleCryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 receptor (NK2R) in complex with miniGs/q70
Map data
Sample
  • Complex: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 receptor (NK2R) in complex with miniGs/q70
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Nanobody 35
    • Protein or peptide: Substance-K receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
  • Protein or peptide: ASP-LYS-PHE-THR-GLY-MLE-A1EUR-NH2
KeywordsGPCR / Peptide 383 (P383) / Neurokinin 2 Receptor (NK2R) / Active State / MEMBRANE PROTEIN
Function / homology
Function and homology information


substance K receptor activity / prolactin secretion / intestine smooth muscle contraction / tachykinin receptor activity / phospholipase C-activating tachykinin receptor signaling pathway / positive regulation of flagellated sperm motility / Tachykinin receptors bind tachykinins / positive regulation of uterine smooth muscle contraction / positive regulation of monoatomic ion transport / tachykinin receptor signaling pathway ...substance K receptor activity / prolactin secretion / intestine smooth muscle contraction / tachykinin receptor activity / phospholipase C-activating tachykinin receptor signaling pathway / positive regulation of flagellated sperm motility / Tachykinin receptors bind tachykinins / positive regulation of uterine smooth muscle contraction / positive regulation of monoatomic ion transport / tachykinin receptor signaling pathway / sperm head / negative regulation of luteinizing hormone secretion / operant conditioning / positive regulation of smooth muscle contraction / positive regulation of acetylcholine secretion, neurotransmission / positive regulation of vascular permeability / response to electrical stimulus / sperm flagellum / muscle contraction / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / G beta:gamma signalling through BTK / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / Glucagon-type ligand receptors / Sensory perception of sweet, bitter, and umami (glutamate) taste / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G alpha (12/13) signalling events / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / Thrombin signalling through proteinase activated receptors (PARs) / adenylate cyclase-activating G protein-coupled receptor signaling pathway / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / fibroblast proliferation / sperm midpiece / Ca2+ pathway / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / Ras protein signal transduction / Extra-nuclear estrogen signaling / cell population proliferation / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / protein-containing complex binding / signal transduction / extracellular exosome / membrane / plasma membrane / cytoplasm / cytosol
Similarity search - Function
Neurokinin NK2 receptor / Neurokinin receptor / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain ...Neurokinin NK2 receptor / Neurokinin receptor / Serpentine type 7TM GPCR chemoreceptor Srsx / G-protein, gamma subunit / G-protein gamma subunit domain profile. / G-protein gamma-like domain / G-protein gamma-like domain superfamily / GGL domain / G protein gamma subunit-like motifs / GGL domain / G protein beta WD-40 repeat protein / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / G-protein coupled receptors family 1 signature. / 7 transmembrane receptor (rhodopsin family) / G protein-coupled receptor, rhodopsin-like / GPCR, rhodopsin-like, 7TM / G-protein coupled receptors family 1 profile. / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Substance-K receptor / Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 / Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.82 Å
AuthorsRen Y / Pavlovskyil A / Liu X / Gerhart-Hines Z
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)81974236 China
CitationJournal: To Be Published
Title: Mechanistic basis for activation and selectivity of NK2R by endogenous and synthetic peptide agonists
Authors: Ren Y / Pavlovskyil A / Liu X / Gerhart-Hines Z
History
DepositionJul 28, 2025-
Header (metadata) releaseJun 17, 2026-
Map releaseJun 17, 2026-
UpdateJun 17, 2026-
Current statusJun 17, 2026Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_65573.png

Downloads & links

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Map

FileDownload / File: emd_65573.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 256 pix.
= 277.12 Å		1.08 Å/pix.
x 256 pix.
= 277.12 Å		1.08 Å/pix.
x 256 pix.
= 277.12 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.0825 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.5
Minimum - Maximum-3.0048556 - 4.258198
Average (Standard dev.)-0.00091136555 (±0.08493288)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 277.12 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_65573_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_65573_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 recept...

EntireName: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 receptor (NK2R) in complex with miniGs/q70
Components
  • Complex: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 receptor (NK2R) in complex with miniGs/q70
    • Protein or peptide: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
    • Protein or peptide: Nanobody 35
    • Protein or peptide: Substance-K receptor
    • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
  • Protein or peptide: ASP-LYS-PHE-THR-GLY-MLE-A1EUR-NH2

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Supramolecule #1: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 recept...

SupramoleculeName: Cryo-EM structure of Peptide 383 (P383)-bound neurokinin 2 receptor (NK2R) in complex with miniGs/q70
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

MacromoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
type: protein_or_peptide / ID: 1
Details: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, with certain residues mutated to match Guanine nucleotide-binding protein G(q) subunit
Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.450961 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GIEKQLQKDK QVYRATHRLL LLGADNSGKS TIVKQMRILH GGSGGSGGTS GIFETKFQVD KVNFHMFDVG GQRDERRKWI QCFNDVTAI IFVVDSSDYN RLQEALNDFK SIWNNRWLRT ISVILFLNKQ DLLAEKVLAG KSKIEDYFPE FARYTTPEDA T PEPGEDPR ...String:
GIEKQLQKDK QVYRATHRLL LLGADNSGKS TIVKQMRILH GGSGGSGGTS GIFETKFQVD KVNFHMFDVG GQRDERRKWI QCFNDVTAI IFVVDSSDYN RLQEALNDFK SIWNNRWLRT ISVILFLNKQ DLLAEKVLAG KSKIEDYFPE FARYTTPEDA T PEPGEDPR VTRAKYFIRD EFLRISTASG DGRHYCYPHF TCAVDTENAR RIFNDCKDII LQMNLREYNL V

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Macromolecule #2: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.861143 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2

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Macromolecule #3: Nanobody 35

MacromoleculeName: Nanobody 35 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 14.71432 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHH

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Macromolecule #4: Substance-K receptor

MacromoleculeName: Substance-K receptor / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.419812 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: DYKDDDDAMG TCDIVTEANI SSGPESNTTG ITAFSMPSWQ LALWATAYLA LVLVAVTGNA IVIWIILAHR RMRTVTNYFI VNLALADLC MAAFNAAFNF VYASHNIWYF GRAFCYFQNL FPITAMFVSI YSMTAIAADR YMAIVHPFQP RLSAPSTKAV I AGIWLVAL ...String:
DYKDDDDAMG TCDIVTEANI SSGPESNTTG ITAFSMPSWQ LALWATAYLA LVLVAVTGNA IVIWIILAHR RMRTVTNYFI VNLALADLC MAAFNAAFNF VYASHNIWYF GRAFCYFQNL FPITAMFVSI YSMTAIAADR YMAIVHPFQP RLSAPSTKAV I AGIWLVAL ALASPQCFYS TVTMDQGATK CVVAWPEDSG GKTLLLYHLV VIALIYFLPL AVMFVAYSVI GLTLWRRAVP GH QAHGANL RHLQAMKKFV KTMVLVVLTF AICWLPYHLY FILGSFQEDI YCHKFIQQVY LALFWLAMSS TMYNPIIYCC LNH RFRSGF RLAFRCCPWV TPTKEDKLEL TPTTSLSTRV NRCHTKETLF MAGDTAPSEA TSGEAGRPQD GSGLWFGYGL LAPT KTHVE I

UniProtKB: Substance-K receptor

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Macromolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

MacromoleculeName: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.418086 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR ...String:
MHHHHHHLEV LFQGPGSSGS ELDQLRQEAE QLKNQIRDAR KACADATLSQ ITNNIDPVGR IQMRTRRTLR GHLAKIYAMH WGTDSRLLV SASQDGKLII WDSYTTNKVH AIPLRSSWVM TCAYAPSGNY VACGGLDNIC SIYNLKTREG NVRVSRELAG H TGYLSCCR FLDDNQIVTS SGDTTCALWD IETGQQTTTF TGHTGDVMSL SLAPDTRLFV SGACDASAKL WDVREGMCRQ TF TGHESDI NAICFFPNGN AFATGSDDAT CRLFDLRADQ ELMTYSHDNI ICGITSVSFS KSGRLLLAGY DDFNCNVWDA LKA DRAGVL AGHDNRVSCL GVTDDGMAVA TGSWDSFLKI WN

UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1

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Macromolecule #6: ASP-LYS-PHE-THR-GLY-MLE-A1EUR-NH2

MacromoleculeName: ASP-LYS-PHE-THR-GLY-MLE-A1EUR-NH2 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 807.935 Da
SequenceString:
DKFTG(MLE)(A1EUR)(NH2)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.6 µm / Nominal defocus min: 1.3 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING ONLY
Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.82 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 185007
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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