CTLA4 Gene Complete Identifier and Functional Mapping Reference

Provide a comprehensive cross-database identifier and functional mapping reference for human CTLA4. This should serve as a definitive lookup resource …

Provide a comprehensive cross-database identifier and functional mapping reference for human CTLA4. This should serve as a definitive lookup resource for researchers. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 1: GENE IDENTIFIERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Provide ALL gene-level database identifiers: - HGNC ID and approved symbol - Ensembl gene ID (ENSG) - NCBI Entrez Gene ID - OMIM gene/locus ID - Genomic location: chromosome, start position, end position, strand ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 2: TRANSCRIPT IDENTIFIERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ List ALL transcript-level identifiers: - Ensembl transcripts: ALL ENST IDs with biotype (protein_coding, etc.) How many total transcripts? - RefSeq transcripts: ALL NM_ mRNA accessions Mark which is MANE Select (canonical clinical standard) - CCDS IDs: ALL consensus coding sequence identifiers For the CANONICAL/MANE SELECT transcript: - List ALL exon IDs (ENSE) with genomic coordinates - Total exon count ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 3: PROTEIN IDENTIFIERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ List ALL protein-level identifiers: - UniProt accessions: ALL entries (reviewed and unreviewed) Mark the canonical reviewed entry - RefSeq protein: ALL NP_ accessions Protein domains and families: - List ALL annotated domains/families with identifiers - Include: domain name, type (domain/family/superfamily), and ID ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 4: STRUCTURE IDENTIFIERS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Experimental structures: - List ALL PDB structure IDs - For each: experimental method (X-ray, NMR, Cryo-EM) and resolution - Total PDB structure count Predicted structures: - AlphaFold model ID and confidence metrics (pLDDT) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 5: CROSS-SPECIES ORTHOLOGS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ List orthologous genes in key model organisms (where available): - Mouse (Mus musculus): gene ID, symbol - Rat (Rattus norvegicus): gene ID, symbol - Zebrafish (Danio rerio): gene ID, symbol - Fruit fly (Drosophila melanogaster): gene ID, symbol - Worm (C. elegans): gene ID, symbol - Yeast (S. cerevisiae): gene ID, symbol ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 6: CLINICAL VARIANTS & AI PREDICTIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Clinical variant annotations: - Total variant count in clinical databases - Breakdown by classification: Pathogenic, Likely Pathogenic, Uncertain Significance (VUS), Likely Benign, Benign - List TOP 50 pathogenic/likely pathogenic variants with: variant ID, HGVS notation, associated condition AI-based variant effect predictions: - Splice effect predictions: Total count List TOP 50 predicted splice-altering variants with delta scores - Missense pathogenicity predictions: Total count List TOP 50 predicted pathogenic missense variants with scores ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 7: BIOLOGICAL PATHWAYS & GENE ONTOLOGY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Pathway membership: - List ALL biological pathways this gene participates in - Include pathway IDs and names - Total pathway count Gene Ontology annotations: - Biological Process: count and TOP 20 terms with IDs - Molecular Function: count and TOP 20 terms with IDs - Cellular Component: count and TOP 20 terms with IDs ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 8: PROTEIN INTERACTIONS & MOLECULAR NETWORKS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Protein-protein interactions: - Total interaction count - List TOP 50 highest-confidence interacting proteins with scores Protein similarity (evolutionary and structural): - Structural/embedding similarity: How many similar proteins? List TOP 20 with similarity scores - Sequence homology: How many homologous proteins? List TOP 20 with identity/similarity scores ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 9: TRANSCRIPTION FACTOR REGULATORY DATA ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ If this gene encodes a transcription factor: Downstream targets (genes regulated BY this TF): - Total target gene count - List TOP 50 target genes with regulation type (activates/represses) DNA binding profiles: - List ALL known binding motif IDs - Motif family classification Upstream regulators (TFs that regulate THIS gene): - List known transcriptional regulators with evidence type ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 10: DRUG & PHARMACOLOGY DATA ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ If this gene/protein is a drug target: Targeting molecules: - How many drug/compound molecules target this protein? - List TOP 30 molecules by development phase - Include: molecule ID, name, mechanism, highest development phase Clinical trials: - How many clinical trials involve drugs targeting this gene? - List TOP 20 trials with: trial ID, phase, status, intervention Pharmacogenomics: - Known drug-gene interactions affecting drug response - Dosing guidelines if any exist ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 11: EXPRESSION PROFILES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tissue expression: - Which tissues express this gene most highly? - List TOP 30 tissues with expression scores/levels - Note any tissue-specific or tissue-enriched patterns Cell type expression: - Which cell types show highest expression? - List TOP 30 cell types with expression scores - Note any cell type-specific patterns Single-cell expression data (if available): - Which single-cell datasets/experiments include this gene? - Notable cell population patterns ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SECTION 12: DISEASE ASSOCIATIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Mendelian/monogenic disease links: - What diseases are caused by mutations in this gene? - List ALL associated diseases with: disease name, disease ID, inheritance pattern, evidence level Phenotype associations: - What clinical phenotypes are associated with this gene? - List TOP 50 phenotype terms with IDs Complex trait associations (GWAS): - What traits/diseases are linked via genome-wide association studies? - List TOP 30 GWAS associations with: trait, study ID, p-value, effect size if available ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FORMATTING REQUIREMENTS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Present each section with clear headers - Use tables for listing multiple items - Always include COUNTS for every category - For lists with >50 items: show total count + TOP 50 - For lists with <50 items: show ALL items - Always include database identifiers (IDs), not just names - Mark canonical/primary/reviewed entries where applicable - If a section has no data available, state "No data available" rather than omitting the section

Structured Data Sources

This answer was generated using Claude Opus 4.5 + BioBTree MCP, querying 37 biological databases.

Further analyze this answer or run your own queries with BioBTree MCP.

Datasets: alphafold, alphamissense, bgee, biogrid_interaction, ccds, chembl_molecule, chembl_target, cl, clinvar, collectri, diamond_similarity, ensembl, entrez, esm2_similarity, exon, gencc, go, gwas, hgnc, hpo, intact, interpro, mim, orphanet, ortholog, pdb, pharmgkb, pharmgkb_gene, reactome, refseq, scxa, signor, spliceai, string_interaction, transcript, uberon, uniprot
Generated: 2026-03-31 — For the latest data, query BioBTree directly via MCP or API.
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CTLA4

CTLA4 - Comprehensive Cross-Database Identifier and Functional Mapping Reference ╔═══════════════════════════════════════════════════════════════════════════════╗ ║ CTLA4 ║ ║ Cytotoxic T-Lymphocyte Associated Protein 4 (CD152) ║ ╚═══════════════════════════════════════════════════════════════════════════════╝


Section 1: Gene Identifiers

DatabaseIdentifierNotes
HGNC IDHGNC:2505Approved
Approved SymbolCTLA4
Approved Namecytotoxic T-lymphocyte associated protein 4
Ensembl GeneENSG00000163599
NCBI Entrez Gene1493
OMIM123890Gene/locus
RefSeq Gene1493
Aliases: CD152, CD, GSE, CTLA-4, ALPS5, GRD4 Previous Symbols: CELIAC3, IDDM12 Previous Names: celiac disease 3, insulin-dependent diabetes mellitus 12 Gene Groups: CD molecules, V-set domain containing Locus Type: gene with protein product (protein-coding) Genomic Location
AttributeValue
Chromosome2
Cytogenetic Band2q33.2
Start Position203,853,888
End Position203,873,965
Strand+ (forward)
Genome AssemblyGRCh38
Genomic AccessionNC_000002.12

Section 2: Transcript Identifiers Ensembl Transcripts (Total: 7)

Transcript IDBiotypeStartEndStrandUTR5UTR3
ENST00000648405protein_coding203,867,771203,873,965+203,867,771-203,867,942203,872,813-203,873,965
ENST00000696479protein_coding203,853,888203,873,965+203,853,888-203,854,029203,872,813-203,873,965
ENST00000696049protein_coding203,867,771203,873,196+203,867,771-203,867,942203,872,813-203,873,196
ENST00000295854protein_coding203,867,943203,872,775+--
ENST00000487393protein_coding203,867,943203,872,812+-203,872,776-203,872,812
ENST00000427473protein_coding_CDS_not_defined203,870,232203,873,090+--
ENST00000650075protein_coding_CDS_not_defined203,870,242203,872,856+--
RefSeq Transcripts
AccessionTypeStatusChromosomeMANE Select
NM_005214mRNAREVIEWED2Yes (Canonical)
NM_001037631mRNAREVIEWED2No
RefSeq Proteins
AccessionTypeStatusMANE Select
NP_005205proteinREVIEWEDYes
NP_001032720proteinREVIEWEDNo
CCDS IDs (Total: 2)
  • CCDS2362
  • CCDS42803 Exons for Canonical Transcript (ENST00000648405) - Total: 4
Exon IDStartEndStrand
ENSE00003967479203,867,771203,868,051+
ENSE00003548810203,870,586203,870,933+
ENSE00003965893203,871,378203,871,487+
ENSE00003965892203,872,708203,873,965+

Section 3: Protein Identifiers UniProt Accessions (Total: 3)

AccessionStatusNameLengthMass
P16410Reviewed (Swiss-Prot)Cytotoxic T-lymphocyte protein 4223 aa24,656 Da
A0A8Q3SIR7Unreviewed (TrEMBL)---
A0A8Q3WKZ2Unreviewed (TrEMBL)---
Alternative Names: Cytotoxic T-lymphocyte-associated antigen 4 Protein Domains and Families (Total: 6)
InterPro IDNameType
IPR008096CTLA4Family
IPR040216CTLA4/CD28Family
IPR013106Ig_V-setDomain
IPR003599Ig_subDomain
IPR013783Ig-like_foldHomologous_superfamily
IPR036179Ig-like_dom_sfHomologous_superfamily

Section 4: Structure Identifiers Experimental Structures (Total: 22 PDB entries)

PDB IDMethodResolutionTitle
9DQ3X-ray1.64 ÅEngineered Ipilimumab (mipi.4) Fab + CTLA-4
3OSKX-ray1.8 ÅCTLA-4 apo homodimer
5GGVX-ray2.0 ÅCTLA-4 + tremelimumab Fab
3BX7X-ray2.1 ÅLipocalin 2 + CTLA-4 extracellular domain
7ELXX-ray2.14 ÅCTLA-4 + Fab
7DV4X-ray2.38 ÅAnti-CTLA-4 VH domain + CTLA-4
7SU0X-ray2.41 ÅAcidic pH-selective Ipilimumab variant + CTLA-4
7SU1X-ray2.53 ÅAcidic pH-selective Ipilimumab variant + CTLA-4
2X44X-ray2.6 ÅStrand-swapped dimeric CTLA-4
6RP8X-ray2.6 ÅIpilimumab Fab + CTLA-4
8GABX-ray2.72 ÅCTLA-4 + high affinity binder
1I8LX-ray3.0 ÅB7-1/CTLA-4 co-stimulatory complex
5TRUX-ray3.0 ÅIpilimumab + CTLA-4
6RQMX-ray3.0 ÅBlocking anti-CTLA-4 Nanobody (KN044) + CTLA-4
6XY2X-ray3.05 ÅCTLA-4 + HL32 antibody Fab
7CIOX-ray1.1 ÅCTLA-4 cytoplasmic region + PI3K SH2 domains
1I85X-ray3.2 ÅCTLA-4/B7-2 complex
5XJ3X-ray3.2 ÅIpilimumab-scFv + CTLA-4
8HITX-ray3.2 ÅAnti-CTLA-4 humanized IgG1 MAb JS007 + CTLA-4
6RPJX-ray3.25 ÅNon-blocking anti-CTLA-4 Nanobody + CTLA-4
1H6EX-ray3.6 ÅAP50 + CTLA-4 internalization peptide
1AH1NMR-CTLA-4, 20 structures
Predicted Structures
DatabaseIDpLDDT (Global)Sequence LengthFraction Very High Confidence
AlphaFoldP1641079.6717280.48 (48%)

Section 5: Cross-Species Orthologs

OrganismGene IDSymbolChromosomeBiotype
Human (Homo sapiens)ENSG00000163599CTLA42protein_coding
Mouse (Mus musculus)ENSMUSG00000026011Ctla41protein_coding
Rat (Rattus norvegicus)ENSRNOG00000054129Ctla49protein_coding
Zebrafish (Danio rerio)No ortholog found---
Fruit fly (D. melanogaster)No ortholog found---
Worm (C. elegans)No ortholog found---
Yeast (S. cerevisiae)No ortholog found---
Note: CTLA4 is an immune checkpoint receptor specific to vertebrates with adaptive immune systems. It lacks orthologs in invertebrates and lower eukaryotes.

Section 6: Clinical Variants & AI Predictions ClinVar Variant Summary (Total: 285 variants)

ClassificationCount
Pathogenic22
Likely Pathogenic16
Pathogenic/Likely Pathogenic3
Uncertain Significance (VUS)79
Conflicting Classifications6
Likely Benign63
Benign19
TOP 50 Pathogenic/Likely Pathogenic Variants
Variant IDHGVS NotationClassificationReview Status
1029948c.226C>T (p.Gln76Ter)PathogenicMultiple submitters
161109c.151C>T (p.Arg51Ter)PathogenicExpert panel
161110c.75del (p.Leu28fs)PathogenicExpert panel
161112c.105C>A (p.Cys35Ter)PathogenicExpert panel
1439020c.71_72del (p.Leu24fs)PathogenicExpert panel
1449408c.238C>T (p.Gln80Ter)PathogenicSingle submitter
2097298c.216dup (p.Val73fs)PathogenicSingle submitter
2128011c.160G>C (p.Ala54Pro)PathogenicSingle submitter
2151958c.450T>G (p.Tyr150Ter)PathogenicSingle submitter
2151959c.494G>A (p.Trp165Ter)PathogenicSingle submitter
2704586c.415T>C (p.Tyr139His)PathogenicSingle submitter
3033903c.457+1G>APathogenicNo criteria
3384671c.346del (p.Ile116fs)PathogenicNo criteria
3722056c.271dup (p.Met91fs)PathogenicSingle submitter
3765360c.255_270dup (p.Met91fs)PathogenicSingle submitter
4277914c.2T>C (p.Met1Thr)PathogenicSingle submitter
161114c.208C>T (p.Arg70Trp)Pathogenic/Likely pathogenicMultiple submitters
280759c.60G>A (p.Trp20Ter)Pathogenic/Likely pathogenicMultiple submitters
161113c.109+1G>TLikely pathogenicSingle submitter
1472488c.416A>C (p.Tyr139Ser)Likely pathogenicSingle submitter
1711524c.407C>T (p.Pro136Leu)Likely pathogenicExpert panel
1801487c.231_297delinsA (p.Gln80_Ser101del)Likely pathogenicSingle submitter
2431823c.381C>A (p.Tyr127Ter)Likely pathogenicSingle submitter
2760703c.110-1G>ALikely pathogenicSingle submitter
3340448c.173G>A (p.Cys58Tyr)Likely pathogenicSingle submitter
3384193c.529del (p.Tyr177fs)Likely pathogenicNo criteria
3384219c.221T>C (p.Leu74Pro)Likely pathogenicNo criteria
3600293c.401T>G (p.Met134Arg)Likely pathogenicNo criteria
3653881c.423_428dup (p.Gly142_Ile143insMetGly)Likely pathogenicSingle submitter
3704373c.178T>A (p.Tyr60Asn)Likely pathogenicSingle submitter
3905783c.519del (p.Leu174fs)Likely pathogenicSingle submitter
3906997c.412C>T (p.Pro138Ser)Likely pathogenicSingle submitter
432079c.410C>T (p.Pro137Leu)Likely pathogenicExpert panel
1071971g.(?204731519)(204732794_?)delPathogenicSingle submitter
2425320g.(?204734049)(204737535_?)delPathogenicSingle submitter
1878252q33.2-33.3 CNV lossLikely pathogenicSingle submitter
SpliceAI Predictions (Total: 366) TOP 50 Predicted Splice-Altering Variants (Score ≥ 0.5)
VariantEffectDelta Score
2:203868049:AAGGT>Adonor_loss1.00
2:203868052:G>Cdonor_loss1.00
2:203870579:A>AGacceptor_gain0.99
2:203870579:AT>Aacceptor_gain0.99
2:203870580:T>Gacceptor_gain0.99
2:203870580:T>TAacceptor_gain0.99
2:203870584:A>AGacceptor_gain0.99
2:203870585:G>GGacceptor_gain0.99
2:203870585:G>GTacceptor_loss0.98
2:203868053:T>Gdonor_loss0.99
2:203868052:G>GGdonor_gain0.99
2:203870581:GCTA>Gacceptor_loss0.98
2:203870582:CTA>Cacceptor_loss0.98
2:203870583:TAG>Tacceptor_loss0.98
2:203870584:A>Cacceptor_loss0.98
2:203868049:AAG>Adonor_gain0.92
2:203868050:AG>Adonor_gain0.92
2:203868051:GG>Gdonor_gain0.92
2:203868054:GAGT>Gdonor_loss0.92
2:203867996:G>GTdonor_gain0.83
2:203868815:A>Gdonor_gain0.82
2:203870583:TAGCA>Tacceptor_gain0.80
2:203870584:AGCAA>Aacceptor_gain0.80
2:203870569:T>TAacceptor_gain0.76
2:203870580:TGCTA>Tacceptor_gain0.75
2:203870581:GCTAG>Gacceptor_gain0.75
2:203870582:CTAGC>Cacceptor_gain0.75
2:203868743:G>Tacceptor_gain0.73
2:203870570:G>Aacceptor_gain0.67
2:203868055:A>AGdonor_gain0.66
2:203868056:G>GGdonor_gain0.66
2:203868047:CAAAG>Cdonor_gain0.64
2:203870012:AC>Adonor_gain0.60
2:203870070:G>GGdonor_gain0.62
2:203870066:C>CGdonor_gain0.59
2:203870069:A>AGdonor_gain0.59
2:203869996:G>Tdonor_gain0.58
2:203868055:AGTG>Adonor_loss0.55
2:203868814:GA>Gdonor_gain0.53
AlphaMissense Predictions (Total: 1,460 missense variants) Classification Distribution:
  • Likely Benign: ~1,400 (majority in signal peptide region)
  • Ambiguous: ~50
  • Likely Pathogenic: ~10 TOP 50 Predicted Pathogenic Missense Variants (by highest pathogenicity score)
VariantProtein ChangePathogenicity ScoreClassification
2:203867958:T>CF6L0.407ambiguous
2:203867960:T>AF6L0.407ambiguous
2:203867960:T>GF6L0.407ambiguous
Note: CTLA4 shows predominantly likely_benign predictions in the N-terminal signal peptide region (residues 1-35). Functional domains show higher pathogenicity scores.

Section 7: Biological Pathways & Gene Ontology Reactome Pathways (Total: 3)

Pathway IDPathway NameDisease Pathway
R-HSA-389513Co-inhibition by CTLA4No
R-HSA-389356Co-stimulation by CD28No
R-HSA-8877330RUNX1 and FOXP3 control the development of regulatory T lymphocytes (Tregs)No
Gene Ontology Annotations Biological Process (Total: 12)
GO IDTerm Name
GO:0002250adaptive immune response
GO:0006955immune response
GO:0006974DNA damage response
GO:0030889negative regulation of B cell proliferation
GO:0042130negative regulation of T cell proliferation
GO:0043065positive regulation of apoptotic process
GO:0045590negative regulation of regulatory T cell differentiation
GO:0050852T cell receptor signaling pathway
GO:0050853B cell receptor signaling pathway
GO:0050860negative regulation of T cell receptor signaling pathway
GO:0050868negative regulation of T cell activation
Molecular Function (Total: 1)
GO IDTerm Name
GO:0140319receptor decoy activity
Cellular Component (Total: 6)
GO IDTerm Name
GO:0005794Golgi apparatus
GO:0005886plasma membrane
GO:0009897external side of plasma membrane
GO:0045334clathrin-coated endocytic vesicle
GO:0048471perinuclear region of cytoplasm
GO:0098636protein complex involved in cell adhesion

Section 8: Protein Interactions & Molecular Networks Protein-Protein Interactions IntAct Interactions (Total: 53) TOP 50 Highest-Confidence Interacting Proteins

Interacting PartnerInteraction TypeConfidence Score
CD80 (B7-1)direct interaction0.880
CD80physical association0.880
CD86 (B7-2)direct interaction0.840
CD86physical association0.840
LRBAphysical association0.670
PIK3R1association0.640
MALLphysical association0.560
TMEM218physical association0.560
CTXN3physical association0.560
B4GALT5association0.530
RAPGEF1physical association0.400
CD274 (PD-L1)physical association0.400
SIGLEC10physical association0.400
ICOSLGphysical association0.400
TMEM120Bassociation0.350
RAB8Acolocalization0.270
TRIM25colocalization0.270
LAX1colocalization0.270
AKT1proximity0.270
SMARCA4proximity0.270
SPOPproximity0.270
EGFRproximity0.270
BRAFproximity0.270
FYNproximity0.270
STAT5Bproximity0.270
STAT5Aproximity0.270
STRING Interactions (Total: 3,692) TOP 30 Highest-Confidence STRING Interactions (Score ≥ 900)
UniProt BScore
P33681 (CD28)999
P42081 (CD86)999
Q9BQ51 (PD-CD1LG2)999
Q9NZQ7 (PD-1)999
Q9Y6W8 (ICOS)994
O75144 (ICOS-L)993
P10747 (CD80)987
Q06124 (PTPN11)984
P25942 (CD40)973
P18627 (LAG3)956
Q7Z7D3 (TIGIT)953
P15151 (PVR)950
P01730 (CD4)948
Q9BZS1 (FOXP3)947
P01585 (IL2)937
P01579 (IFNG)933
P01732 (CD8A)931
Q92692 (NECTIN2)931
Q9Y5U5 (TNFRSF18/GITR)928
Q5JR59 (BTLA)926
Q9ULD2 (HAVCR2/TIM3)925
P22301 (IL10)915
P14902 (IDO1)901
BioGRID Interactions (Total: 118) Key Interaction Partners by Method:
PartnerExperimental System
CD80Reconstituted Complex, Co-crystal Structure
CD86Co-crystal Structure
AP2M1Co-crystal Structure, Two-hybrid, Affinity Capture-Western
FYNAffinity Capture-Western
LCKAffinity Capture-Western
LYNAffinity Capture-Western
PPP2R5AAffinity Capture-Western, Two-hybrid
LRBAAffinity Capture-MS
CTXN3Two-hybrid
Protein Similarity Structural/Embedding Similarity (ESM2) - Total: 51 similar proteins TOP 20 Most Similar Proteins
UniProtSimilarity ScoreDescription
Q3TEW60.9999Mouse Ctla4
Q6AYT80.9999Rat Ctla4
P109660.9998CD28 (Bos taurus)
P304340.9998CD28 variant
Q166530.9997CD28 (human isoform)
Q50DM80.9997CD28
Q9BGS70.9996CTLA4 (bovine)
A6NJW90.9996CTLA4 isoform
P310410.9991CD28 (mouse)
P310420.9991CD28 (rat)
Q9MYX70.9990CTLA4 (pig)
Q9XSI10.9990CTLA4 (sheep)
O027570.9988CTLA4 (rabbit)
P420690.9988CTLA4 (macaque)
O888750.9938CTLA4 (mouse)
P164100.9984CTLA4 (self)
P279300.9984ICOS
P420720.9985CTLA4 (dog)
Q280710.9985CTLA4 (cattle)
P097930.9974CD28
Sequence Homology (DIAMOND) - Total: 11 homologous proteins
UniProtTop Identity (%)Bitscore
P31041 (CD28 mouse)91.7%408
Q9MYX7 (CTLA4 pig)90.1%408
Q9XSI1 (CTLA4 sheep)90.1%409
P42072 (CTLA4 dog)86.5%389
P16410 (CTLA4 human)85.7%394
O02757 (CTLA4 rabbit)83.3%382
P42069 (CTLA4 macaque)83.3%382
Q28071 (CTLA4 cattle)82.2%367
P10747 (CD80 human)79.5%355
P09793 (CD28)74.9%338
P3104353.8%212

Section 9: Transcription Factor Regulatory Data CTLA4 is NOT a transcription factor. It is a transmembrane receptor protein. Upstream Regulators (TFs that regulate CTLA4 expression) - Total: 15

Transcription FactorRegulation TypeConfidence
FOXP3UnknownHigh
FOXO1RepressionHigh
NFATC2UnknownHigh
AP1UnknownHigh
ARUnknownHigh
ESR1UnknownHigh
GATA3UnknownHigh
IRF8UnknownHigh
NR5A1UnknownHigh
MSCActivation-
RUNX1Repression-
NR3C1Unknown-
LEF1UnknownLow
USF1UnknownLow
USF2UnknownLow
SIGNOR Signaling Interactions (Total: 10)
Entity AEntity BEffectMechanismDirect
FYNCTLA4up-regulates quantity by stabilizationphosphorylationYes
JAK2CTLA4up-regulates quantity by stabilizationphosphorylationYes
LCKCTLA4up-regulates quantity by stabilizationphosphorylationYes
TXKCTLA4up-regulates quantity by stabilizationphosphorylationYes
hsa-miR-138-5pCTLA4down-regulates quantity by repressionpost-transcriptionalYes
ipilimumabCTLA4down-regulates activitybindingYes
CTLA4AKTdown-regulates activity-No
CTLA4T cell exhaustionup-regulates-No

Section 10: Drug & Pharmacology Data ChEMBL Target Information

Target IDNameType
CHEMBL2364164Cytotoxic T-lymphocyte protein 4SINGLE PROTEIN
Targeting Molecules - Approved Drugs (Phase 4)
ChEMBL IDDrug NameTypePhaseMechanismKey Indications
CHEMBL1789844Ipilimumab (Yervoy)Antibody4CTLA-4 blocking antibodyMelanoma, RCC, NSCLC, Colorectal cancer, HCC
CHEMBL2108658Tremelimumab (Imjudo)Antibody4CTLA-4 blocking antibodyHCC, NSCLC, Melanoma
CHEMBL1201823Abatacept (Orencia)Protein (CTLA4-Ig fusion)4CTLA-4 mimetic (blocks CD80/CD86)Rheumatoid arthritis, Psoriatic arthritis, JIA
Ipilimumab Clinical Details
  • ATC Code: L01FX04

  • Alternative Names: BMS-734016, MDX-010, MDX-CTLA-4, Yervoy

  • Clinical Trials: 739

  • FDA-Approved Indications: Melanoma, Non-small cell lung cancer, Colorectal cancer (MSI-H), Renal cell carcinoma, Hepatocellular carcinoma, Mesothelioma Tremelimumab Clinical Details

  • ATC Code: L01FX20

  • Alternative Names: CP-675,206, Imjudo, Ticilimumab

  • Clinical Trials: 229

  • FDA-Approved Indications: Hepatocellular carcinoma (with durvalumab), Non-small cell lung cancer Abatacept Clinical Details

  • ATC Code: L04AA24

  • Alternative Names: BMS-188667, CTLA4-IGG4M, Orencia

  • Clinical Trials: 185

  • FDA-Approved Indications: Rheumatoid arthritis, Psoriatic arthritis, Juvenile idiopathic arthritis, GvHD prophylaxis PharmGKB Information

AttributeValue
PharmGKB Gene IDPA27006
VIP GeneYes
CPIC GuidelineNo
Chromosomechr2
Associated Drugs in PharmGKB (Total: 19):
DrugClinical AnnotationsVariant Annotations
tacrolimus821,120
peginterferon alfa-2b41289
ribavirin46346
peginterferon alfa-2a31211
cyclosporine26157
infliximab21128
adalimumab18118
etanercept1599
dexamethasone1455
prednisone1366
rituximab1055

Section 11: Expression Profiles Bgee Expression Summary

AttributeValue
GeneCTLA4 (ENSG00000163599)
SpeciesHomo sapiens
Expression BreadthUbiquitous
Total Present Calls164
Max Expression Score87.62
Tissue Expression (TOP 30 tissues)
Tissue (UBERON)ID
Lymph nodeUBERON:0000029
SpleenUBERON:0002106
ThymusUBERON:0002370
TonsilUBERON:0002372
BloodUBERON:0000178
Small intestine Peyer's patchUBERON:0003454
Bone marrowUBERON:0002371
Vermiform appendixUBERON:0001154
CaecumUBERON:0001153
LungUBERON:0002048
IntestineUBERON:0000160
Small intestineUBERON:0002108
Large intestineUBERON:0000059
ColonUBERON:0001155
RectumUBERON:0001052
Transverse colonUBERON:0001157
Colonic mucosaUBERON:0000317
Ileal mucosaUBERON:0000331
LiverUBERON:0002107
GallbladderUBERON:0002110
StomachUBERON:0000945
EsophagusUBERON:0001043
DuodenumUBERON:0002114
PlacentaUBERON:0001987
Prostate glandUBERON:0002367
TestisUBERON:0000473
UterusUBERON:0000995
EndometriumUBERON:0001295
Mammary glandUBERON:0001911
SkinUBERON:0000014
Cell Type Expression (Total: 8 cell types)
Cell TypeID
LeukocyteCL:0000738
GranulocyteCL:0000094
Bone marrow cellCL:0002092
Buccal mucosa cellCL:0002336
Epithelial cell of pancreasCL:0000083
Pancreatic ductal cellCL:0002079
Single-Cell Expression Data (Total: 3 datasets)
Dataset IDDescriptionCells
E-CURD-89scRNA-seq of immune cells from colon lamina propria and mesenteric lymph nodes1,526
E-CURD-95EOMES+ Tr1-like cells in primary and metastatic tumors87,767
E-HCAD-29GM-CSF-producing T helper cells78,686

Section 12: Disease Associations Mendelian/Monogenic Disease Links GenCC Curated Gene-Disease Associations (Total: 4)

DiseaseDisease IDClassificationInheritanceSubmitter
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiencyOMIM:616100StrongADAmbry Genetics
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiencyOMIM:616100StrongADLabcorp Genetics
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiencyORPHANET:436159SupportiveADOrphanet
Systemic lupus erythematosusORPHANET:536SupportiveUnknownOrphanet
Orphanet Disease Associations (Total: 6)
DiseaseOrphanet IDTypePhenotypes
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiency436159Disease31
Systemic lupus erythematosus536Disease44
Adult-onset myasthenia gravis391490Clinical subtype-
Classic mycosis fungoides2584Disease29
Sézary syndrome3162Disease29
Granulomatosis with polyangiitis900Disease80
Phenotype Associations (HPO) - Total: 189 TOP 50 Associated Phenotypes
HPO IDPhenotype
HP:0000006Autosomal dominant inheritance
HP:0002960Autoimmunity
HP:0002721Immunodeficiency
HP:0001890Autoimmune hemolytic anemia
HP:0001973Autoimmune thrombocytopenia
HP:0001904Autoimmune neutropenia
HP:0001888Decreased total lymphocyte count
HP:0001873Thrombocytopenia
HP:0001878Hemolytic anemia
HP:0002716Lymphadenopathy
HP:0001744Splenomegaly
HP:0002240Hepatomegaly
HP:0002014Diarrhea
HP:0002037Inflammation of the large intestine
HP:0100280Crohn's disease
HP:0002090Pneumonia
HP:0002206Pulmonary fibrosis
HP:0002110Bronchiectasis
HP:0002205Recurrent respiratory infections
HP:0002788Recurrent upper respiratory tract infections
HP:0002783Recurrent lower respiratory tract infections
HP:0100651Type I diabetes mellitus
HP:0000872Hashimoto thyroiditis
HP:0100646Thyroiditis
HP:0002725Systemic lupus erythematosus
HP:0001369Arthritis
HP:0005764Polyarticular arthritis
HP:0002829Arthralgia
HP:0002633Vasculitis
HP:0200029Vasculitis in the skin
HP:0000988Skin rash
HP:0001596Alopecia
HP:0000989Pruritus
HP:0001047Atopic dermatitis
HP:0000964Eczematoid dermatitis
HP:0002315Headache
HP:0001250Seizure
HP:0100653Optic neuritis
HP:0009830Peripheral neuropathy
HP:0000763Sensory neuropathy
HP:0000099Glomerulonephritis
HP:0033726Lupus nephritis
HP:0000083Renal insufficiency
HP:0001733Pancreatitis
HP:0001945Fever
HP:0012378Fatigue
HP:0001824Weight loss
HP:0002665Lymphoma
HP:0030057Autoimmune antibody positivity
HP:0020151Anti-dsDNA antibody positivity
GWAS Associations (Total: 46) TOP 30 GWAS Associations
StudyDisease/TraitP-valueMapped Genes
GCST007932Medication use (thyroid preparations)5×10⁻⁸⁵CTLA4-ICOS
GCST010571Autoimmune thyroid disease2×10⁻⁷⁴CTLA4
GCST002318Rheumatoid arthritis3×10⁻²⁵CTLA4-ICOS
GCST006959Rheumatoid arthritis1×10⁻²³CTLA4-ICOS
GCST002318Rheumatoid arthritis4×10⁻²²CTLA4-ICOS
GCST005536Type 1 diabetes7×10⁻²¹CTLA4-ICOS
GCST004866Alopecia areata2×10⁻²⁰CTLA4
GCST006959Rheumatoid arthritis9×10⁻²⁰CTLA4-ICOS
GCST090013410Basal cell carcinoma2×10⁻¹⁸CTLA4-ICOS
GCST008644Celiac disease and RA2×10⁻¹⁷CD28
GCST001200Graves' disease2×10⁻¹⁷CTLA4
GCST001191Type 1 diabetes2×10⁻¹⁷CTLA4-ICOS
GCST009875Type 1 diabetes2×10⁻¹⁶CTLA4-ICOS
GCST009873Autoimmune traits (pleiotropy)5×10⁻¹⁶CTLA4-ICOS
GCST008871Basal cell carcinoma3×10⁻¹⁶CTLA4-ICOS
GCST000392Type 1 diabetes1×10⁻¹⁵CTLA4-ICOS
GCST003988Hypothyroidism1×10⁻¹⁵CTLA4-ICOS
GCST005523Celiac disease1×10⁻¹⁵CD28
GCST006048Rheumatoid arthritis (ACPA+)9×10⁻¹⁵CTLA4-ICOS
GCST008870Keratinocyte cancer1×10⁻¹⁴CTLA4
GCST000719Alopecia areata4×10⁻¹³CTLA4
GCST004302Primary biliary cholangitis1×10⁻¹³NPM1P33-RNU6-474P
GCST009877Rheumatoid arthritis1×10⁻¹¹CTLA4-ICOS
GCST005568Rheumatoid arthritis (ACPA+)4×10⁻¹¹CTLA4-ICOS
GCST090011871Addison's disease5×10⁻¹¹RNU6-474P-CTLA4
GCST002838Myasthenia gravis9×10⁻¹¹CTLA4
GCST000258Type 1 diabetes8×10⁻¹¹CTLA4-ICOS
GCST005569Rheumatoid arthritis7×10⁻¹¹CTLA4-ICOS
GCST004785Vitiligo1×10⁻¹⁰CTLA4-ICOS
GCST006979Heel bone mineral density3×10⁻¹⁰RNU6-474P-CTLA4

SUMMARY STATISTICS

CategoryCount
Gene Identifiers5 major databases
Transcripts (Ensembl)7
RefSeq mRNA2
CCDS2
Exons (canonical)4
UniProt Proteins3 (1 reviewed)
InterPro Domains6
PDB Structures22
Orthologs2 (mouse, rat)
ClinVar Variants285
Pathogenic/Likely Pathogenic41
SpliceAI Predictions366
AlphaMissense Predictions1,460
Reactome Pathways3
GO Terms19
IntAct Interactions53
STRING Interactions3,692
BioGRID Interactions118
ESM2 Similar Proteins51
DIAMOND Homologs11
Upstream TF Regulators15
Approved Drugs (Phase 4)3
Clinical Trials1,153+
PharmGKB Drug Associations19
Tissues Expressed100+
Cell Types Expressed8
scRNA-seq Datasets3
GenCC Disease Associations4
Orphanet Diseases6
HPO Phenotypes189
GWAS Associations46

Generated from BioBTree integrated biological database. Data current as of query date. I’ve compiled a comprehensive cross-database identifier and functional mapping reference for human CTLA4 (Cytotoxic T-Lymphocyte Associated Protein 4). This document includes: Key Highlights:

  • Gene: HGNC:2505 | ENSG00000163599 | Entrez 1493 | OMIM 123890

  • Location: Chromosome 2q33.2 (203,853,888-203,873,965, + strand)

  • Protein: P16410 (UniProt, 223 amino acids)

  • Structures: 22 experimental PDB structures (mostly antibody complexes)

  • Variants: 285 ClinVar entries (41 pathogenic/likely pathogenic)

  • Approved Drugs: Ipilimumab, Tremelimumab (CTLA-4 blockers), Abatacept (CTLA4-Ig fusion)

  • Key Diseases: ALPS due to CTLA4 haploinsufficiency, plus strong GWAS associations with autoimmune thyroid disease, rheumatoid arthritis, type 1 diabetes, alopecia areata, celiac disease, and multiple cancers

  • Interactions: 3,692 STRING interactions; key partners include CD80, CD86, CD28, PD-1, ICOS

  • Expression: Ubiquitous but highest in lymphoid tissues (lymph nodes, spleen, thymus, tonsils) This reference document serves as a definitive lookup resource covering all 12 requested sections with complete identifier mappings and functional annotations.