ASpdb: an integrative knowledgebase of human protein isoforms from experimental and AI-predicted structures
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Center for Computational Systems Medicine
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Protein Summary

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AS Summary

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Protein Functional Features

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Gene Isoform Structures and Expression Levels

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Protein Structures

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pLDDT Score Distribution

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Ramachandran Plot of Protein Structures

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Potential Active Site Information

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Protein Structure and Feature Comparision

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Protein-Protein Interaction

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Related Drugs

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Related Diseases

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Clinically Important Variants

Protein:CGAS

Protein Summary

check button Gene summary
Gene name: CGAS
ASpdb.0 ID: 115004
Gene
Gene symbol

CGAS

Gene ID

115004

Gene namecyclic GMP-AMP synthase
SynonymsC6orf150|D4|MB21D1|h-cGAS
Cytomap

6q13

Type of geneprotein-coding
Descriptioncyclic GMP-AMP synthase2'3'-cGAMP synthaseDANGER family member 4Mab-21 domain containing 1cGAMP synthasemab-21 domain-containing protein 1protein MB21D1
Modification date20240416
UniProtAcc

Q8N884


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneCGAS

GO:0002218

activation of innate immune response

23258413|23929945|24077100|26046437|28363908|29426904|30007416|32817552|32911482|32912999|33542149|35438208

GeneCGAS

GO:0002221

pattern recognition receptor signaling pathway

23258413

GeneCGAS

GO:0002230

positive regulation of defense response to virus by host

23929945|24077100|26046437

GeneCGAS

GO:0002753

cytoplasmic pattern recognition receptor signaling pathway

23258413

GeneCGAS

GO:0003677

DNA binding

23258413

GeneCGAS

GO:0003682

chromatin binding

28738408|32817552|32911482|32912999|33051594|33542149

GeneCGAS

GO:0003690

double-stranded DNA binding

24077100|28363908|29937271|30007416|32792394|32817552|32911482|32912999|33051594|33542149|35438208|35460603

GeneCGAS

GO:0005546

phosphatidylinositol-4,5-bisphosphate binding

30827685

GeneCGAS

GO:0005634

nucleus

29937271|30356214|31544964|32792394|33230297|33406424

GeneCGAS

GO:0005654

nucleoplasm

-

GeneCGAS

GO:0005737

cytoplasm

23258413

GeneCGAS

GO:0005829

cytosol

32912999|35438208

GeneCGAS

GO:0005829

cytosol

23258413|29937271|30356214|30827685|31544964|32792394|33406424

GeneCGAS

GO:0005886

plasma membrane

30827685

GeneCGAS

GO:0006974

DNA damage response

28738408

GeneCGAS

GO:0016604

nuclear body

-

GeneCGAS

GO:0019933

cAMP-mediated signaling

23258413|24077100|28738408|30007416

GeneCGAS

GO:0019934

cGMP-mediated signaling

23258413|24077100|28738408

GeneCGAS

GO:0031491

nucleosome binding

32911482|32912999|33051594

GeneCGAS

GO:0032481

positive regulation of type I interferon production

24077100|26046437|28363908|28738408|32792394|33230297|33406424

GeneCGAS

GO:0035861

site of double-strand break

30356214

GeneCGAS

GO:0038001

paracrine signaling

24077100

GeneCGAS

GO:0042803

protein homodimerization activity

29426904|32911482|32912999|33051594|33542149|35438208

GeneCGAS

GO:0045087

innate immune response

23258413

GeneCGAS

GO:0051607

defense response to virus

21478870|23929945|24077100|26046437

GeneCGAS

GO:0061501

2',3'-cyclic GMP-AMP synthase activity

23258413|24077100|26300263|28214358|28363908|28738408|28934246|29426904|29937271|30007416|32792394|32911482|32912999|33542149

GeneCGAS

GO:0140693

molecular condensate scaffold activity

32911482|32912999|35322803

GeneCGAS

GO:0140896

cGAS/STING signaling pathway

32911482|32912999|33542149|35322803|35438208|35460603

GeneCGAS

GO:0160049

negative regulation of cGAS/STING signaling pathway

32911482|32912999

GeneCGAS

GO:2000042

negative regulation of double-strand break repair via homologous recombination

30356214|31544964



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q8N884-1Q8N884-1_4lev_A.pdb4LEVX-ray1.95A157522

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q8N884CGASQ8N884-1Q8N884-2522447445447SubstitutionVCTRLY445447
Q8N884CGASQ8N884-1Q8N884-2522447448522Deletionnonenone447447

check buttonMultiple sequence alignment of our canonical and alternatively spliced CGAS

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of CGAS
UniProt-idENSGENSTENSP
Q8N884-1ENSG00000164430.17ENST00000370315.4ENSP00000359339.3
Q8N884-2ENSG00000164430.17ENST00000370318.5ENSP00000359342.1

UniProt-idNM IDNP ID
Q8N884-1NM_138441.2NP_612450.2

check buttonAmino acid sequences of our canonical and alternatively spliced CGAS
accession_idProtein sequence
Q8N884-1MQPWHGKAMQRASEAGATAPKASARNARGAPMDPTESPAAPEAALPKAGKFGPARKSGSRQKKSAPDTQERPPVRATGARAKKAPQRAQD
TQPSDATSAPGAEGLEPPAAREPALSRAGSCRQRGARCSTKPRPPPGPWDVPSPGLPVSAPILVRRDAAPGASKLRAVLEKLKLSRDDIS
TAAGMVKGVVDHLLLRLKCDSAFRGVGLLNTGSYYEHVKISAPNEFDVMFKLEVPRIQLEEYSNTRAYYFVKFKRNPKENPLSQFLEGEI
LSASKMLSKFRKIIKEEINDIKDTDVIMKRKRGGSPAVTLLISEKISVDITLALESKSSWPASTQEGLRIQNWLSAKVRKQLRLKPFYLV
PKHAKEGNGFQEETWRLSFSHIEKEILNNHGKSKTCCENKEEKCCRKDCLKLMKYLLEQLKERFKDKKHLDKFSSYHVKTAFFHVCTQNP
Q8N884-2MQPWHGKAMQRASEAGATAPKASARNARGAPMDPTESPAAPEAALPKAGKFGPARKSGSRQKKSAPDTQERPPVRATGARAKKAPQRAQD
TQPSDATSAPGAEGLEPPAAREPALSRAGSCRQRGARCSTKPRPPPGPWDVPSPGLPVSAPILVRRDAAPGASKLRAVLEKLKLSRDDIS
TAAGMVKGVVDHLLLRLKCDSAFRGVGLLNTGSYYEHVKISAPNEFDVMFKLEVPRIQLEEYSNTRAYYFVKFKRNPKENPLSQFLEGEI
LSASKMLSKFRKIIKEEINDIKDTDVIMKRKRGGSPAVTLLISEKISVDITLALESKSSWPASTQEGLRIQNWLSAKVRKQLRLKPFYLV

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
CGAS (go to UniProt):Q8N884

check buttonRetention analysis result of protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at

download page

* Minus value of BPloci means that the break pointn is located before the CDS.
- Retained protein feature among the 13 regional features.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


Gene Isoform Structures and Expression Levels for CGAS

check buttonGene structures of our canonical and alternative spliced genes of CGAS
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of CGAS

check button Expression levels of gene isoforms across GTEx.
gtex expression

check button Expression levels of gene isoforms across TCGA.
tcga expression


Protein Structures

check button PDB and CIF files of the predicted protein structures
* Here we show the 3D structure of the proteins using Mol*. AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Model confidence is shown from the pLDDT values per residue. pLDDT corresponds to the model’s prediction of its score on the local Distance Difference Test. It is a measure of local accuracy (from AlphfaFold website). To color code individual residues, we transformed individual PDB files into CIF format.
3D view using mol* of Q8N884-1
3D view using mol* of Q8N884-2


pLDDT Score Distribution

check button pLDDT score distribution of the predicted protein structures from AlphaFold2
* AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100.
pLDDT distribution across the protein length of Q8N884-1
all structure
pLDDT distribution across the protein length of Q8N884-2
all structure


Ramachandran Plot of Protein Structures


check button Ramachandran plot of the torsional angles - phi (φ)and psi (ψ) - of the residues (amino acids) contained in this protein peptide.
Ramachandran plot of Q8N884-1
all structure
Ramachandran plot of Q8N884-2
all structure

Potential Active Site Information


check button The potential binding sites of these proteins were identified using SiteMap, a module of the Schrodinger suite.
UniProt-idSite scoreSizeD scoreVolumeExposureEnclosureContactPhobicPhilicBalanceDon/AccResidues
Q8N884-11.0292580.99911.0080.5770.7410.9360.271.210.2230.76211,212,213,214,216,218,219,220,221,225,226,227,22
8,229,242,245,247,248,304,305,306,307,317,319,321,
360,362,363,364,365,370,376,377,378,379,380,383,41
0,414,417,418,421,432,434,435,436,437,439,440,482,
483,484,485,488,489,490,492,494,495,496
Q8N884-21.0691721.096777.5810.630.7750.8930.7910.9480.8340.654211,212,213,216,218,219,220,225,226,227,229,246,24
7,302,306,307,309,317,318,319,321,330,333,334,337,
338,339,353,360,376,377,378,379,380,382,383,386,41
0,414,417,418,421,434,435,436,439,440,443,444,447


Protein Structure and Feature Comparision


check button Protein Structure Comparision Using Template Modeling Scores (TM-score).
all structure

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Canonical validated structure (PDB)(green)
3D view using mol* of Q8N884-1_Q8N884-1_4lev_A.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical validated structure (PDB)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q8N884-1_4lev_A_Q8N884-2.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q8N884-1_Q8N884-2.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q8N884-1_vs_Q8N884-2.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q8N884-1_vs_Q8N884-2.png
all structure<


Protein-Protein Interaction


check button Interactors from UniProt.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


check button Interactors from STRING.
Gene nameInteractors


Related Drugs to CGAS


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions

Related Diseases to CGAS


check button Previous studies relating to the alternative splicing of CGAS and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in CGAS


check button (ClinVar, 04/20/2024)
accession_iduniprot_idgene_nameTypeVariantClinical_significance