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- EMDB-27872: Cryo-EM structure of the PAC1R-PACAP27-Gs complex -

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Basic information

Entry
Database: EMDB / ID: EMD-27872
TitleCryo-EM structure of the PAC1R-PACAP27-Gs complex
Map dataConsensus map of PAC1R-PACAP27-Gs complex, postprocessed, -25 B factor sharpened
Sample
  • Complex: Gs coupled Pituitary adenylate cyclase-activating polypeptide type I receptor complex with PACAP27 peptide
    • Complex: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Pituitary adenylate cyclase-activating polypeptide type I receptor
      • 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(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Pituitary adenylate cyclase-activating polypeptide type I receptor
    • Complex: Nanobody35
      • Protein or peptide: Nanobody35
    • Complex: Pituitary adenylate cyclase activating polypeptide-27
      • Protein or peptide: Pituitary adenylate cyclase-activating polypeptide
  • Ligand: water
Keywordsmembrane protein / drug discovery / G protein coupled receptor / signalling
Function / homology
Function and homology information


negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase activating polypeptide activity / vasoactive intestinal polypeptide receptor activity / positive regulation of chemokine (C-C motif) ligand 5 production / positive regulation of growth hormone secretion / positive regulation of cAMP-mediated signaling / NGF-independant TRKA activation / regulation of G protein-coupled receptor signaling pathway / neuropeptide hormone activity ...negative regulation of response to reactive oxygen species / development of primary female sexual characteristics / pituitary adenylate cyclase activating polypeptide activity / vasoactive intestinal polypeptide receptor activity / positive regulation of chemokine (C-C motif) ligand 5 production / positive regulation of growth hormone secretion / positive regulation of cAMP-mediated signaling / NGF-independant TRKA activation / regulation of G protein-coupled receptor signaling pathway / neuropeptide hormone activity / G protein-coupled peptide receptor activity / positive regulation of small GTPase mediated signal transduction / neuropeptide binding / insulin secretion / positive regulation of inositol phosphate biosynthetic process / positive regulation of calcium ion transport into cytosol / peptide hormone receptor binding / PKA activation in glucagon signalling / peptide hormone binding / adenylate cyclase binding / hair follicle placode formation / negative regulation of cell cycle / developmental growth / neuropeptide signaling pathway / D1 dopamine receptor binding / bicellular tight junction / multicellular organismal response to stress / positive regulation of protein kinase activity / 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 / positive regulation of GTPase activity / trans-Golgi network membrane / female pregnancy / negative regulation of inflammatory response to antigenic stimulus / bone development / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / caveola / 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 / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / platelet aggregation / 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 / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / 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 / neuron projection development / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / 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) / cell-cell signaling / GTPase binding / response to estradiol / positive regulation of cold-induced thermogenesis / regulation of protein localization / retina development in camera-type eye / signaling receptor activity / Ca2+ pathway / phospholipase C-activating G protein-coupled receptor signaling pathway / positive regulation of cytosolic calcium ion concentration
Similarity search - Function
GPCR, family 2, pituitary adenylate cyclase activating polypeptide type 1 receptor / : / Glucagon/GIP/secretin/VIP / Peptide hormone / Glucagon / GIP / secretin / VIP family signature. / Glucagon like hormones / G-protein coupled receptors family 2 signature 1. / : / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. ...GPCR, family 2, pituitary adenylate cyclase activating polypeptide type 1 receptor / : / Glucagon/GIP/secretin/VIP / Peptide hormone / Glucagon / GIP / secretin / VIP family signature. / Glucagon like hormones / G-protein coupled receptors family 2 signature 1. / : / GPCR, family 2, extracellular hormone receptor domain / G-protein coupled receptors family 2 profile 1. / Domain present in hormone receptors / Hormone receptor domain / GPCR family 2, extracellular hormone receptor domain superfamily / G-protein coupled receptors family 2 signature 2. / GPCR, family 2, secretin-like, conserved site / GPCR, family 2, secretin-like / 7 transmembrane receptor (Secretin family) / GPCR, family 2-like / G-protein coupled receptors family 2 profile 2. / G-protein alpha subunit, group S / Guanine nucleotide binding protein (G-protein), alpha subunit / G protein alpha subunit, helical insertion / G-protein alpha subunit / G-alpha domain profile. / G protein alpha subunit / 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 / Guanine nucleotide-binding protein, beta subunit / G-protein, beta subunit / 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. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Pituitary adenylate cyclase-activating polypeptide / Pituitary adenylate cyclase-activating polypeptide type I 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 / Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
Similarity search - Component
Biological speciesHomo sapiens (human) / Lama glama (llama)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.3 Å
AuthorsPiper SJ / Danev R / Sexton P / Wootten D
Funding support Australia, United Kingdom, Japan, 5 items
OrganizationGrant numberCountry
National Health and Medical Research Council (NHMRC, Australia)1155302 Australia
National Health and Medical Research Council (NHMRC, Australia)1150083 Australia
National Health and Medical Research Council (NHMRC, Australia)1154434 Australia
Royal Society United Kingdom
Japan Science and Technology Japan
CitationJournal: Nat Commun / Year: 2022
Title: Understanding VPAC receptor family peptide binding and selectivity.
Authors: Sarah J Piper / Giuseppe Deganutti / Jessica Lu / Peishen Zhao / Yi-Lynn Liang / Yao Lu / Madeleine M Fletcher / Mohammed Akhter Hossain / Arthur Christopoulos / Christopher A Reynolds / ...Authors: Sarah J Piper / Giuseppe Deganutti / Jessica Lu / Peishen Zhao / Yi-Lynn Liang / Yao Lu / Madeleine M Fletcher / Mohammed Akhter Hossain / Arthur Christopoulos / Christopher A Reynolds / Radostin Danev / Patrick M Sexton / Denise Wootten /
Abstract: The vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) receptors are key regulators of neurological processes. Despite recent structural data, a ...The vasoactive intestinal peptide (VIP) and pituitary adenylate cyclase-activating polypeptide (PACAP) receptors are key regulators of neurological processes. Despite recent structural data, a comprehensive understanding of peptide binding and selectivity among different subfamily receptors is lacking. Here, we determine structures of active, Gs-coupled, VIP-VPAC1R, PACAP27-VPAC1R, and PACAP27-PAC1R complexes. Cryo-EM structural analyses and molecular dynamics simulations (MDSs) reveal fewer stable interactions between VPAC1R and VIP than for PACAP27, more extensive dynamics of VIP interaction with extracellular loop 3, and receptor-dependent differences in interactions of conserved N-terminal peptide residues with the receptor core. MD of VIP modelled into PAC1R predicts more transient VIP-PAC1R interactions in the receptor core, compared to VIP-VPAC1R, which may underlie the selectivity of VIP for VPAC1R over PAC1R. Collectively, our work improves molecular understanding of peptide engagement with the PAC1R and VPAC1R that may benefit the development of novel selective agonists.
History
DepositionAug 17, 2022-
Header (metadata) releaseNov 23, 2022-
Map releaseNov 23, 2022-
UpdateMay 1, 2024-
Current statusMay 1, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27872.png

Downloads & links

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Map

FileDownload / File: emd_27872.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationConsensus map of PAC1R-PACAP27-Gs complex, postprocessed, -25 B factor sharpened
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 288 pix.
= 239.04 Å		0.83 Å/pix.
x 288 pix.
= 239.04 Å		0.83 Å/pix.
x 288 pix.
= 239.04 Å

Surface

Projections

Slices (1/3)

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.009
Minimum - Maximum-0.025407564 - 0.070032634
Average (Standard dev.)-0.00006411625 (±0.001974956)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 239.04 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_27872_msk_1.map
Projections & Slices
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Additional map: Consensus map of PAC1R-PACAP27-Gs complex, refinement map

Fileemd_27872_additional_1.map
AnnotationConsensus map of PAC1R-PACAP27-Gs complex, refinement map
Projections & Slices
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Additional map: Consensus map of PAC1R-PACAP27-Gs complex, postprocessed, -25 B...

Fileemd_27872_additional_2.map
AnnotationConsensus map of PAC1R-PACAP27-Gs complex, postprocessed, -25 B factor sharpened
Projections & Slices
AxesZYX

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Additional map: Receptor focused map of PAC1R-PACAP27-Gs complex

Fileemd_27872_additional_3.map
AnnotationReceptor focused map of PAC1R-PACAP27-Gs complex
Projections & Slices
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Additional map: CryoSPARC non-uniform refinement map of PAC1R-PACAP27-Gs complex

Fileemd_27872_additional_4.map
AnnotationCryoSPARC non-uniform refinement map of PAC1R-PACAP27-Gs complex
Projections & Slices
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Histogram

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Half map: Half map 1 of Consensus refinement of PAC1R-PACAP27-Gs complex

Fileemd_27872_half_map_1.map
AnnotationHalf map 1 of Consensus refinement of PAC1R-PACAP27-Gs complex
Projections & Slices
AxesZYX

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Half map: Half map 2 of Consensus refinement of PAC1R-PACAP27-Gs complex

Fileemd_27872_half_map_2.map
AnnotationHalf map 2 of Consensus refinement of PAC1R-PACAP27-Gs complex
Projections & Slices
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Sample components

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Entire : Gs coupled Pituitary adenylate cyclase-activating polypeptide typ...

EntireName: Gs coupled Pituitary adenylate cyclase-activating polypeptide type I receptor complex with PACAP27 peptide
Components
  • Complex: Gs coupled Pituitary adenylate cyclase-activating polypeptide type I receptor complex with PACAP27 peptide
    • Complex: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Pituitary adenylate cyclase-activating polypeptide type I receptor
      • 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(T) subunit beta-1
      • Protein or peptide: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
      • Protein or peptide: Pituitary adenylate cyclase-activating polypeptide type I receptor
    • Complex: Nanobody35
      • Protein or peptide: Nanobody35
    • Complex: Pituitary adenylate cyclase activating polypeptide-27
      • Protein or peptide: Pituitary adenylate cyclase-activating polypeptide
  • Ligand: water

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Supramolecule #1: Gs coupled Pituitary adenylate cyclase-activating polypeptide typ...

SupramoleculeName: Gs coupled Pituitary adenylate cyclase-activating polypeptide type I receptor complex with PACAP27 peptide
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6

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Supramolecule #2: Guanine nucleotide-binding protein G(s) subunit alpha isoforms sh...

SupramoleculeName: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit ...Name: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2, Pituitary adenylate cyclase-activating polypeptide type I receptor
type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#3, #6
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: Nanobody35

SupramoleculeName: Nanobody35 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #4
Source (natural)Organism: Lama glama (llama)

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Supramolecule #4: Pituitary adenylate cyclase activating polypeptide-27

SupramoleculeName: Pituitary adenylate cyclase activating polypeptide-27 / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #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 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.683434 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: 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

UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short

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Macromolecule #2: 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: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 38.534062 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV ...String:
MHHHHHHGSS GSELDQLRQE AEQLKNQIRD ARKACADATL SQITNNIDPV GRIQMRTRRT LRGHLAKIYA MHWGTDSRLL VSASQDGKL IIWDSYTTNK VHAIPLRSSW VMTCAYAPSG NYVACGGLDN ICSIYNLKTR EGNVRVSREL AGHTGYLSCC R FLDDNQIV TSSGDTTCAL WDIETGQQTT TFTGHTGDVM SLSLAPDTRL FVSGACDASA KLWDVREGMC RQTFTGHESD IN AICFFPN GNAFATGSDD ATCRLFDLRA DQELMTYSHD NIICGITSVS FSKSGRLLLA GYDDFNCNVW DALKADRAGV LAG HDNRVS CLGVTDDGMA VATGSWDSFL KIWN

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

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Macromolecule #3: 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: 3 / 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 #4: Nanobody35

MacromoleculeName: Nanobody35 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 15.140742 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
QVQLQESGGG LVQPGGSLRL SCAASGFTFS NYKMNWVRQA PGKGLEWVSD ISQSGASISY TGSVKGRFTI SRDNAKNTLY LQMNSLKPE DTAVYYCARC PAPFTRDCFD VTSTTYAYRG QGTQVTVSSH HHHHHEPEA

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Macromolecule #5: Pituitary adenylate cyclase-activating polypeptide

MacromoleculeName: Pituitary adenylate cyclase-activating polypeptide / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 3.154642 KDa
SequenceString:
HSDGIFTDSY SRYRKQMAVK KYLAAVL

UniProtKB: Pituitary adenylate cyclase-activating polypeptide

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Macromolecule #6: Pituitary adenylate cyclase-activating polypeptide type I receptor

MacromoleculeName: Pituitary adenylate cyclase-activating polypeptide type I receptor
type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 55.439207 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: DYKDDDDLEV LFQGPAMHSD CIFKKEQAMC LEKIQRANEL MGFNDSSPGC PGMWDNITCW KPAHVGEMVL VSCPELFRIF NPDQVWETE TIGESDFGDS NSLDLSDMGV VSRNCTEDGW SEPFPHYFDA CGFDEYESET GDQDYYYLSV KALYTVGYST S LVTLTTAM ...String:
DYKDDDDLEV LFQGPAMHSD CIFKKEQAMC LEKIQRANEL MGFNDSSPGC PGMWDNITCW KPAHVGEMVL VSCPELFRIF NPDQVWETE TIGESDFGDS NSLDLSDMGV VSRNCTEDGW SEPFPHYFDA CGFDEYESET GDQDYYYLSV KALYTVGYST S LVTLTTAM VILCRFRKLH CTRNFIHMNL FVSFMLRAIS VFIKDWILYA EQDSNHCFIS TVECKAVMVF FHYCVVSNYF WL FIEGLYL FTLLVETFFP ERRYFYWYTI IGWGTPTVCV TVWATLRLYF DDTGCWDMND STALWWVIKG PVVGSIMVNF VLF IGIIVI LVQKLQSPDM GGNESSIYLR LARSTLLLIP LFGIHYTVFA FSPENVSKRE RLVFELGLGS FQGFVVAVLY CFLN GEVQA EIKRKWRSWK VNRYFAVDFK HRHPSLASSG VNGGTQLSIL SKSSSQIRMS GLPADNLATP AGLEVLFQGP HHHHH HHH

UniProtKB: Pituitary adenylate cyclase-activating polypeptide type I receptor

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Macromolecule #7: water

MacromoleculeName: water / type: ligand / ID: 7 / Number of copies: 11 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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

Concentration5.15 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Detector mode: COUNTING / Average electron dose: 52.4 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.4000000000000001 µm / Nominal defocus min: 0.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 440740
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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