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Yorodumi- EMDB-30047: CryoEM structure of human PAC1 receptor in complex with maxadilan -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-30047 | |||||||||
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Title | CryoEM structure of human PAC1 receptor in complex with maxadilan | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / vasoactive intestinal polypeptide receptor activity / positive regulation of cAMP-mediated signaling / NGF-independant TRKA activation / G protein-coupled peptide receptor activity / positive regulation of small GTPase mediated signal transduction / neuropeptide binding / positive regulation of inositol phosphate biosynthetic process / positive regulation of calcium ion transport into cytosol ...negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / vasoactive intestinal polypeptide receptor activity / positive regulation of cAMP-mediated signaling / NGF-independant TRKA activation / G protein-coupled peptide receptor activity / positive regulation of small GTPase mediated signal transduction / neuropeptide binding / positive regulation of inositol phosphate biosynthetic process / positive regulation of calcium ion transport into cytosol / PKA activation in glucagon signalling / peptide hormone binding / adenylate cyclase binding / hair follicle placode formation / developmental growth / D1 dopamine receptor binding / bicellular tight junction / multicellular organismal response to stress / intracellular transport / renal water homeostasis / Hedgehog 'off' state / adenylate cyclase-activating adrenergic receptor signaling pathway / activation of adenylate cyclase activity / cellular response to glucagon stimulus / cAMP-mediated signaling / adenylate cyclase activator activity / regulation of insulin secretion / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / bone development / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / caveola / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Activation of the phototransduction cascade / adenylate cyclase-activating G protein-coupled receptor signaling pathway / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / G protein activity / G-protein activation / platelet aggregation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / cognition / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / small GTPase binding / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / vasodilation / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / cellular response to catecholamine stimulus / ADORA2B mediated anti-inflammatory cytokines production / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / 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 / Inactivation, recovery and regulation of the phototransduction cascade / G-protein beta-subunit binding / heterotrimeric G-protein complex / sensory perception of smell / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / response to estradiol / positive regulation of cold-induced thermogenesis / retina development in camera-type eye / signaling receptor activity / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (i) signalling events / fibroblast proliferation / spermatogenesis / G alpha (s) signalling events / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / G alpha (q) signalling events / response to ethanol / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / cell differentiation / receptor complex / cell surface receptor signaling pathway / endosome / response to xenobiotic stimulus Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) / Lutzomyia longipalpis (insect) / Lama glama (llama) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
Authors | Song X / Wang J / Zhang D / Wang HW / Ma Y | |||||||||
Citation | Journal: Cell Res / Year: 2020 Title: Cryo-EM structures of PAC1 receptor reveal ligand binding mechanism. Authors: Jia Wang / Xianqiang Song / Dandan Zhang / Xiaoqing Chen / Xun Li / Yaping Sun / Cui Li / Yunpeng Song / Yao Ding / Ruobing Ren / Essa Hu Harrington / Liaoyuan A Hu / Wenge Zhong / Cen Xu / ...Authors: Jia Wang / Xianqiang Song / Dandan Zhang / Xiaoqing Chen / Xun Li / Yaping Sun / Cui Li / Yunpeng Song / Yao Ding / Ruobing Ren / Essa Hu Harrington / Liaoyuan A Hu / Wenge Zhong / Cen Xu / Xin Huang / Hong-Wei Wang / Yingli Ma / Abstract: The pituitary adenylate cyclase-activating polypeptide type I receptor (PAC1R) belongs to the secretin receptor family and is widely distributed in the central neural system and peripheral organs. ...The pituitary adenylate cyclase-activating polypeptide type I receptor (PAC1R) belongs to the secretin receptor family and is widely distributed in the central neural system and peripheral organs. Abnormal activation of the receptor mediates trigeminovascular activation and sensitization, which is highly related to migraine, making PAC1R a potential therapeutic target. Elucidation of PAC1R activation mechanism would benefit discovery of therapeutic drugs for neuronal disorders. PAC1R activity is governed by pituitary adenylate cyclase-activating polypeptide (PACAP), known as a major vasodilator neuropeptide, and maxadilan, a native peptide from the sand fly, which is also capable of activating the receptor with similar potency. These peptide ligands have divergent sequences yet initiate convergent PAC1R activity. It is of interest to understand the mechanism of PAC1R ligand recognition and receptor activity regulation through structural biology. Here we report two near-atomic resolution cryo-EM structures of PAC1R activated by PACAP38 or maxadilan, providing structural insights into two distinct ligand binding modes. The structures illustrate flexibility of the extracellular domain (ECD) for ligands with distinct conformations, where ECD accommodates ligands in different orientations while extracellular loop 1 (ECL1) protrudes to further anchor the ligand bound in the orthosteric site. By structure-guided molecular modeling and mutagenesis, we tested residues in the ligand-binding pockets and identified clusters of residues that are critical for receptor activity. The structures reported here for the first time elucidate the mechanism of specificity and flexibility of ligand recognition and binding for PAC1R, and provide insights toward the design of therapeutic molecules targeting PAC1R. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_30047.map.gz | 2.3 MB | EMDB map data format | |
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Header (meta data) | emd-30047-v30.xml emd-30047.xml | 17.1 KB 17.1 KB | Display Display | EMDB header |
Images | emd_30047.png | 81 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30047 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30047 | HTTPS FTP |
-Validation report
Summary document | emd_30047_validation.pdf.gz | 329 KB | Display | EMDB validaton report |
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Full document | emd_30047_full_validation.pdf.gz | 328.5 KB | Display | |
Data in XML | emd_30047_validation.xml.gz | 5.5 KB | Display | |
Data in CIF | emd_30047_validation.cif.gz | 6.2 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30047 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30047 | HTTPS FTP |
-Related structure data
Related structure data | 6m1hMC 6m1iC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_30047.map.gz / Format: CCP4 / Size: 22.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.091 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : PACAP38-PAC1R complex
Entire | Name: PACAP38-PAC1R complex |
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Components |
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-Supramolecule #1: PACAP38-PAC1R complex
Supramolecule | Name: PACAP38-PAC1R complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
Molecular weight | Theoretical: 150 KDa |
-Macromolecule #1: Pituitary adenylate cyclase-activating polypeptide type I receptor
Macromolecule | Name: Pituitary adenylate cyclase-activating polypeptide type I receptor type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 47.967223 KDa |
Recombinant expression | Organism: Insect BA phytoplasma (bacteria) |
Sequence | String: DYKDDDDKIF KKEQAMCLEK IQRANELMGF NDSSPGCPGM WDNITCWKPA HVGEMVLVSC PELFRIFNPD QDMGVVSRNC TEDGWSEPF PHYFDACGFD EYESETGDQD YYYLSVKALY TVGYSLSLVA LLLAMVILCR FRKLHCTRNF IHMNLFVSFM L RAISVFIK ...String: DYKDDDDKIF KKEQAMCLEK IQRANELMGF NDSSPGCPGM WDNITCWKPA HVGEMVLVSC PELFRIFNPD QDMGVVSRNC TEDGWSEPF PHYFDACGFD EYESETGDQD YYYLSVKALY TVGYSLSLVA LLLAMVILCR FRKLHCTRNF IHMNLFVSFM L RAISVFIK DWILYAEQDS NHCFISTVEC KAVMVFFHYC VVSNYFWLFI EGLYLFTLLV ETFFPERRYF YWYTIIGWGA PL VFVTVWA TLRLYFDDTG CWDMNDSTAL WWVIKGPVVG SIMVNFVLFI GIIVILVQKL QSPDMGGNES SIYLRLARST LLL IPLFGI HYTVFAFSPE NVSKRERLVF ELGLGSFQGF VVAVLYCFLN GEVQAEIKRK WRSWKVNRYF AVDFKHRHPS LASS HHHHH HHHHH |
-Macromolecule #2: Maxadilan
Macromolecule | Name: Maxadilan / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Lutzomyia longipalpis (insect) |
Molecular weight | Theoretical: 6.88182 KDa |
Sequence | String: CDATCQFRKA IDDCQKQAHH SNVLQTSVQT TATFTSMDTS QLPGNSVFKE CMKQKKKEFK A |
-Macromolecule #3: Nanobody 35
Macromolecule | Name: Nanobody 35 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Lama glama (llama) |
Molecular weight | Theoretical: 14.71432 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHH |
-Macromolecule #4: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
Macromolecule | Name: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 7.861143 KDa |
Recombinant expression | Organism: Insect BA phytoplasma (bacteria) |
Sequence | String: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L |
-Macromolecule #5: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
Macromolecule | Name: 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 |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 37.47398 KDa |
Recombinant expression | Organism: Insect BA phytoplasma (bacteria) |
Sequence | String: GMSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGKL IIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC CRFLDDNQIV T SSGDTTCA ...String: GMSELDQLRQ EAEQLKNQIR DARKACADAT LSQITNNIDP VGRIQMRTRR TLRGHLAKIY AMHWGTDSRL LVSASQDGKL IIWDSYTTN KVHAIPLRSS WVMTCAYAPS GNYVACGGLD NICSIYNLKT REGNVRVSRE LAGHTGYLSC CRFLDDNQIV T SSGDTTCA LWDIETGQQT TTFTGHTGDV MSLSLAPDTR LFVSGACDAS AKLWDVREGM CRQTFTGHES DINAICFFPN GN AFATGSD DATCRLFDLR ADQELMTYSH DNIICGITSV SFSKSGRLLL AGYDDFNCNV WDALKADRAG VLAGHDNRVS CLG VTDDGM AVATGSWDSF LKIWN |
-Macromolecule #6: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Macromolecule | Name: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 45.683434 KDa |
Recombinant expression | Organism: Insect BA phytoplasma (bacteria) |
Sequence | String: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE ...String: MGCLGNSKTE DQRNEEKAQR EANKKIEKQL QKDKQVYRAT HRLLLLGAGE SGKNTIVKQM RILHVNGFNG EGGEEDPQAA RSNSDGEKA TKVQDIKNNL KEAIETIVAA MSNLVPPVEL ANPENQFRVD YILSVMNVPD FDFPPEFYEH AKALWEDEGV R ACYERSNE YQLIDCAQYF LDKIDVIKQA DYVPSDQDLL RCRVLTSGIF ETKFQVDKVN FHMFDVGAQR DERRKWIQCF ND VTAIIFV VASSSYNMVI REDNQTNRLQ AALKLFDSIW NNKWLRDTSV ILFLNKQDLL AEKVLAGKSK IEDYFPEFAR YTT PEDATP EPGEDPRVTR AKYFIRDEFL RISTASGDGR HYCYPHFTCA VDTENIRRVF NDCRDIIQRM HLRQYELL |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 5 mg/mL |
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Buffer | pH: 7.5 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 3838 pixel / Digitization - Dimensions - Height: 3710 pixel / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.0 mm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
CTF correction | Software - Name: CTFFIND (ver. 4.1) |
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Final reconstruction | Number classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 58451 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |