Section 1: Gene Identifiers
| Attribute | Value |
|---|
| HGNC ID | HGNC:1101 |
| Approved Symbol | BRCA2 |
| Approved Name | BRCA2 DNA repair associated |
| Ensembl Gene ID | ENSG00000139618 |
| NCBI Entrez Gene ID | 675 |
| OMIM Gene/Locus ID | 600185 |
| CCDS ID | CCDS9344 |
| Locus Group | protein-coding gene |
| Status | Approved |
Genomic Location (GRCh38)
| Attribute | Value |
|---|
| Chromosome | 13 |
| Cytogenetic Band | 13q13.1 |
| Start Position | 32,315,086 |
| End Position | 32,400,268 |
| Strand | + (positive) |
| Gene Span | 85,182 bp |
Previous Symbols and Aliases
| Type | Values |
|---|
| Previous Names | Fanconi anemia, complementation group D1; breast cancer 2, early onset; breast cancer 2 |
| Previous Symbols | FANCD1, FACD, FANCD |
| Aliases | FAD, FAD1, BRCC2, XRCC11 |
Section 2: Transcript Identifiers
Ensembl Transcripts
Total Transcript Count: 19
| Transcript ID | Biotype | Start | End | Notes |
|---|
| ENST00000380152 | protein_coding | 32,315,508 | 32,400,268 | Canonical/Principal |
| ENST00000544455 | protein_coding | 32,315,086 | 32,400,268 | |
| ENST00000530893 | protein_coding | 32,315,505 | 32,400,268 | |
| ENST00000680887 | protein_coding | 32,316,072 | 32,400,268 | |
| ENST00000700202 | protein_coding | 32,315,508 | 32,398,918 | |
| ENST00000713678 | protein_coding | 32,315,496 | 32,400,264 | |
| ENST00000713680 | protein_coding | 32,315,508 | 32,400,268 | |
| ENST00000470094 | nonsense_mediated_decay | 32,315,508 | 32,400,265 | |
| ENST00000528762 | nonsense_mediated_decay | 32,315,508 | 32,398,918 | |
| ENST00000614259 | nonsense_mediated_decay | 32,316,461 | 32,400,268 | |
| ENST00000665585 | nonsense_mediated_decay | 32,315,508 | 32,398,918 | |
| ENST00000666593 | nonsense_mediated_decay | 32,315,508 | 32,394,933 | |
| ENST00000700201 | nonsense_mediated_decay | 32,315,585 | 32,333,290 | |
| ENST00000713677 | nonsense_mediated_decay | 32,315,496 | 32,400,264 | |
| ENST00000713679 | nonsense_mediated_decay | 32,315,508 | 32,400,268 | |
| ENST00000533776 | retained_intron | 32,396,809 | 32,398,448 | |
| ENST00000700199 | retained_intron | 32,315,583 | 32,316,889 | |
| ENST00000700200 | retained_intron | 32,315,583 | 32,326,971 | |
| ENST00000700203 | retained_intron | 32,375,911 | 32,398,918 | |
RefSeq Transcripts (Human)
| Accession | Type | Status | MANE Select |
|---|
| NM_000059 | mRNA | REVIEWED | ✓ Yes |
| NM_001406719 | mRNA | REVIEWED | No |
| NM_001406720 | mRNA | REVIEWED | No |
| NM_001406721 | mRNA | REVIEWED | No |
| NM_001406722 | mRNA | REVIEWED | No |
| NM_001432077 | mRNA | REVIEWED | No |
| NR_176251 | ncRNA | REVIEWED | No |
CCDS IDs
| ID | Notes |
|---|
| CCDS9344 | Consensus coding sequence |
Exons for Canonical Transcript (ENST00000380152)
Total Exon Count: 27
| Exon ID | Start | End | Length (bp) |
|---|
| ENSE00004011581 | 32,315,508 | 32,315,667 | 160 |
| ENSE00001484009 | 32,316,422 | 32,316,527 | 106 |
| ENSE00003666217 | 32,319,077 | 32,319,325 | 249 |
| ENSE00003659301 | 32,325,076 | 32,325,184 | 109 |
| ENSE00003739878 | 32,326,101 | 32,326,150 | 50 |
| ENSE00003747332 | 32,326,242 | 32,326,282 | 41 |
| ENSE00003749714 | 32,326,499 | 32,326,613 | 115 |
| ENSE00003714754 | 32,329,443 | 32,329,492 | 50 |
| ENSE00003731761 | 32,330,919 | 32,331,030 | 112 |
| ENSE00000939167 | 32,332,272 | 32,333,387 | 1,116 |
| ENSE00000939168 | 32,336,265 | 32,341,196 | 4,932 |
| ENSE00000939169 | 32,344,558 | 32,344,653 | 96 |
| ENSE00000939171 | 32,346,827 | 32,346,896 | 70 |
| ENSE00000939173 | 32,354,861 | 32,355,288 | 428 |
| ENSE00000939174 | 32,356,428 | 32,356,609 | 182 |
| ENSE00000939175 | 32,357,742 | 32,357,929 | 188 |
| ENSE00001394102 | 32,362,523 | 32,362,693 | 171 |
| ENSE00000939177 | 32,363,179 | 32,363,533 | 355 |
| ENSE00000939178 | 32,370,402 | 32,370,557 | 156 |
| ENSE00000939180 | 32,370,956 | 32,371,100 | 145 |
| ENSE00003461148 | 32,376,670 | 32,376,791 | 122 |
| ENSE00000939183 | 32,379,317 | 32,379,515 | 199 |
| ENSE00000939185 | 32,379,750 | 32,379,913 | 164 |
| ENSE00000939187 | 32,380,007 | 32,380,145 | 139 |
| ENSE00000939189 | 32,394,689 | 32,394,933 | 245 |
| ENSE00003560258 | 32,396,898 | 32,397,044 | 147 |
| ENSE00003717596 | 32,398,162 | 32,400,268 | 2,107 |
Section 3: Protein Identifiers
UniProt Accessions
Total UniProt Entries: 14
| Accession | Status | Name | Length | Mass |
|---|
| P51587 | Reviewed (Swiss-Prot) | Breast cancer type 2 susceptibility protein | 3,418 aa | 384,230 Da |
| A0A590UJ24 | Unreviewed (TrEMBL) | - | - | - |
| A0A590UJI7 | Unreviewed (TrEMBL) | - | - | - |
| A0A590UJU6 | Unreviewed (TrEMBL) | - | - | - |
| A0A7P0T9D7 | Unreviewed (TrEMBL) | - | - | - |
| A0A7P0TAP7 | Unreviewed (TrEMBL) | - | - | - |
| A0A8V8TPZ2 | Unreviewed (TrEMBL) | - | - | - |
| A0A8V8TQQ4 | Unreviewed (TrEMBL) | - | - | - |
| A0AAQ5BGN0 | Unreviewed (TrEMBL) | - | - | - |
| A0AAQ5BGN2 | Unreviewed (TrEMBL) | - | - | - |
| A0AAQ5BGN4 | Unreviewed (TrEMBL) | - | - | - |
| A0AAQ5BGQ6 | Unreviewed (TrEMBL) | - | - | - |
| H0YD86 | Unreviewed (TrEMBL) | - | - | - |
| H0YE37 | Unreviewed (TrEMBL) | - | - | - |
RefSeq Protein Accessions (Human)
| Accession | Status | MANE Select |
|---|
| NP_000050 | REVIEWED | ✓ Yes |
| NP_001393648 | REVIEWED | No |
| NP_001393649 | REVIEWED | No |
| NP_001393650 | REVIEWED | No |
| NP_001393651 | REVIEWED | No |
| NP_001419006 | REVIEWED | No |
Protein Domains and Families (InterPro)
Total Domain Annotations: 10
| InterPro ID | Name | Type |
|---|
| IPR015525 | BRCA2 | Family |
| IPR002093 | BRCA2_repeat | Repeat |
| IPR015187 | BRCA2_OB_1 | Domain |
| IPR048262 | BRCA2_OB_2_dom | Domain |
| IPR015188 | BRCA2_OB_3 | Domain |
| IPR015252 | BRCA2_hlx | Domain |
| IPR055077 | BRCA2_TR2 | Domain |
| IPR015205 | Tower_dom | Domain |
| IPR012340 | NA-bd_OB-fold | Homologous Superfamily |
| IPR036315 | BRCA2_hlx_sf | Homologous Superfamily |
Section 4: Structure Identifiers
Experimental Structures (PDB)
Total PDB Structure Count: 14
| PDB ID | Title | Method | Resolution (Å) |
|---|
| 1N0W | Crystal structure of a RAD51-BRCA2 BRC repeat complex | X-RAY DIFFRACTION | 1.70 |
| 8C3N | Stapled peptide SP30 in complex with HumRadA22 | X-RAY DIFFRACTION | 1.21 |
| 8BR9 | Stapled peptide SP24 in complex with HumRadA22 | X-RAY DIFFRACTION | 1.63 |
| 6HQU | HumRadA22 in complex with recombined BRC repeat 8-2 | X-RAY DIFFRACTION | 1.97 |
| 3EU7 | Crystal Structure of a PALB2/BRCA2 complex | X-RAY DIFFRACTION | 2.20 |
| 7LDG | Crystal structure of the MEILB2-BRCA2 complex | X-RAY DIFFRACTION | 2.56 |
| 7BDX | Armadillo domain of HSF2BP with BRCA2 peptide | X-RAY DIFFRACTION | 2.60 |
| 8PBC | RAD51 filament on ssDNA bound by BRCA2 c-terminus | ELECTRON MICROSCOPY | 2.61 |
| 8UVW | Crystal structure of RAD51-BRCA2 Cter complex | X-RAY DIFFRACTION | 2.73 |
| 8PBD | RAD51 filament on dsDNA bound by BRCA2 c-terminus | ELECTRON MICROSCOPY | 2.83 |
| 8C3J | Stapled peptide SP2 in complex with HumRadA22 | X-RAY DIFFRACTION | 3.02 |
| 6GY2 | Human Plk1-PBD with BRCA2 phosphopeptide | X-RAY DIFFRACTION | 3.11 |
| 8R2G | Crystal structure of a BRCA2-DMC1 complex | X-RAY DIFFRACTION | 3.45 |
| 8QQE | Complex between DMC1 and PhePP domain of BRCA2 | X-RAY DIFFRACTION | 3.46 |
Predicted Structures (AlphaFold)
| Model ID | UniProt | Notes |
|---|
| AF-P51587-F1 | P51587 | Full-length BRCA2 predicted structure available |
Section 5: Cross-Species Orthologs
| Organism | Ensembl Gene ID | Symbol | Biotype |
|---|
| Mouse (Mus musculus) | ENSMUSG00000041147 | Brca2 | protein_coding |
| Rat (Rattus norvegicus) | ENSRNOG00000001111 | Brca2 | protein_coding |
| Zebrafish (Danio rerio) | ENSDARG00000079015 | brca2 | protein_coding |
| Fruit fly (Drosophila melanogaster) | FBGN0050169 | Brca2 | protein_coding |
| Worm (C. elegans) | No direct ortholog identified | - | - |
| Yeast (S. cerevisiae) | No ortholog (BRCA2 is specific to metazoans) | - | - |
Section 6: Clinical Variants & AI Predictions
ClinVar Variant Summary
Total Variants in ClinVar: 21,181
| Classification | Notes |
|---|
| Pathogenic | ~1,500+ variants |
| Likely Pathogenic | ~500+ variants |
| Uncertain Significance (VUS) | Majority of variants |
| Likely Benign | Multiple |
| Benign | Multiple |
| Conflicting Classifications | Many variants |
TOP 50 Pathogenic/Likely Pathogenic Variants
| ClinVar ID | HGVS Notation | Type | Classification |
|---|
| 1012157 | c.9163del (p.Leu3055fs) | Deletion | Pathogenic |
| 1012158 | c.5934del (p.Phe1978fs) | Deletion | Pathogenic |
| 1012159 | c.5566_5567inv (p.His1856Cys) | Inversion | Pathogenic |
| 1012160 | c.5362del (p.Ser1788fs) | Deletion | Pathogenic |
| 1012161 | c.5297del (p.Asn1766fs) | Deletion | Pathogenic |
| 1012162 | c.1561del (p.Ser521fs) | Deletion | Pathogenic |
| 1012163 | c.1053del (p.Lys351fs) | Deletion | Pathogenic/Likely pathogenic |
| 1012164 | c.728del (p.Asn243fs) | Deletion | Pathogenic |
| 1012165 | c.691_692delinsGA (p.Ser231Asp) | Indel | Pathogenic |
| 1012166 | c.2588del (p.Asn863fs) | Deletion | Pathogenic |
| 1012167 | c.7177del (p.Lys2392_Met2393insTer) | Deletion | Pathogenic |
| 1012168 | c.10248del (p.Lys3416fs) | Deletion | Pathogenic |
| 1012202 | c.8423_8427delinsA (p.Leu2808fs) | Indel | Pathogenic |
| 1012203 | c.8487+2T>G | SNV | Pathogenic |
| 1012631 | c.1490_1493del (p.Ser497fs) | Deletion | Pathogenic |
| 1048907 | c.68-2_316+1del | Deletion | Pathogenic |
| 1048937 | c.517-2_631+1del | Deletion | Pathogenic |
| 1048980 | c.4042del (p.Cys1348fs) | Deletion | Pathogenic |
| 1049319 | c.7436-2_7617+189del | Deletion | Pathogenic |
| 1049351 | c.6808_6836del (p.Gly2270fs) | Deletion | Pathogenic |
| 1049419 | c.1859_1865del (p.Gln619_Phe620insTer) | Deletion | Pathogenic |
| 1049456 | c.8732del (p.Ala2911fs) | Deletion | Pathogenic |
| 1050075 | c.8332-1_8487+146dup | Duplication | Pathogenic |
| 1050270 | c.8469_8475del (p.Gln2823fs) | Deletion | Pathogenic |
| 1050378 | c.8755-2_9023del | Deletion | Pathogenic |
| 1050481 | c.6334A>T (p.Arg2112Ter) | SNV | Pathogenic |
| 1050553 | c.8827del (p.Gln2943fs) | Deletion | Pathogenic |
| 1050639 | c.5593dup (p.Ile1865fs) | Duplication | Pathogenic |
| 1050735 | c.7726G>T (p.Gly2576Ter) | SNV | Pathogenic |
| 1068686 | c.6751_6752del (p.His2251fs) | Microsatellite | Pathogenic |
| 1068842 | c.20del (p.Glu7fs) | Deletion | Pathogenic |
| 1068843 | c.1761_1762insTA (p.Asn588Ter) | Insertion | Pathogenic |
| 1068929 | c.1403_1406del (p.Arg468fs) | Microsatellite | Pathogenic |
| 1068981 | c.4026del (p.Ser1342fs) | Deletion | Pathogenic |
| 1069124 | c.5409_5412del (p.Val1804fs) | Deletion | Pathogenic |
| 1069421 | c.859del (p.Met287fs) | Deletion | Pathogenic |
| 1069551 | c.9690_9696del (p.Leu3230fs) | Deletion | Pathogenic |
| 1069760 | c.6409_6410del (p.Asn2137fs) | Deletion | Pathogenic |
| 1069813 | c.2409T>A (p.Tyr803Ter) | SNV | Pathogenic |
| 1070093 | c.8857G>T (p.Glu2953Ter) | SNV | Pathogenic |
| 1070128 | c.3716_3717del (p.Lys1239fs) | Deletion | Pathogenic |
| 1070316 | c.1364del (p.Lys454_Ser455insTer) | Deletion | Pathogenic |
| 1070329 | c.8437G>T (p.Gly2813Ter) | SNV | Pathogenic |
| 1070335 | c.3472G>T (p.Glu1158Ter) | SNV | Pathogenic |
| 1070336 | c.7495del (p.Gln2499fs) | Deletion | Pathogenic |
| 1070587 | c.3352_3353del (p.Leu1118fs) | Deletion | Pathogenic |
| 1070596 | c.8266_8267dup (p.Glu2757fs) | Duplication | Pathogenic |
| 1070668 | c.7126_7127del (p.Ala2376fs) | Deletion | Pathogenic |
| 1071296 | c.8829_8830ins... (p.Ile2944delinsAspProValGlyAsnTer) | Insertion | Pathogenic |
| 1071475 | c.6284C>A (p.Ser2095Ter) | SNV | Pathogenic |
SpliceAI Predictions
Total Splice-Altering Variant Predictions: 3,855
| Variant | Gene | Effect | Delta Score |
|---|
| 13:32315088:G:C | BRCA2 | donor_gain | 0.99 |
| 13:32315136:C:A | BRCA2 | donor_gain | 0.99 |
| 13:32315135:T:TA | BRCA2 | donor_gain | 0.97 |
| 13:32315313:A:AC | BRCA2 | donor_gain | 0.93 |
| 13:32315314:C:CC | BRCA2 | donor_gain | 0.93 |
| 13:32315262:T:TA | BRCA2 | donor_gain | 0.90 |
| 13:32315167:AGGT:A | BRCA2 | donor_gain | 0.90 |
| 13:32315312:CA:C | BRCA2 | donor_gain | 0.90 |
| 13:32315289:A:C | BRCA2 | donor_gain | 0.89 |
| 13:32315288:A:AC | BRCA2 | donor_gain | 0.87 |
| (... 3,845 additional predictions) | | | |
AlphaMissense Predictions
Total Missense Predictions: 22,763
TOP 50 Predicted Pathogenic Missense Variants (am_class = "likely_pathogenic")
| Variant | Protein Change | AM Score | Classification |
|---|
| 13:32319091:A:C | S28R | 0.969 | likely_pathogenic |
| 13:32319093:T:A | S28R | 0.969 | likely_pathogenic |
| 13:32319093:T:G | S28R | 0.969 | likely_pathogenic |
| 13:32319102:G:C | W31C | 0.960 | likely_pathogenic |
| 13:32319102:G:T | W31C | 0.960 | likely_pathogenic |
| 13:32319103:T:C | F32L | 0.955 | likely_pathogenic |
| 13:32319105:T:A | F32L | 0.955 | likely_pathogenic |
| 13:32319105:T:G | F32L | 0.955 | likely_pathogenic |
| 13:32319104:T:C | F32S | 0.938 | likely_pathogenic |
| 13:32319089:T:A | I27K | 0.920 | likely_pathogenic |
| 13:32316504:T:C | F15S | 0.918 | likely_pathogenic |
| 13:32319082:G:A | G25R | 0.917 | likely_pathogenic |
| 13:32319082:G:C | G25R | 0.917 | likely_pathogenic |
| 13:32316503:T:C | F15L | 0.916 | likely_pathogenic |
| 13:32316505:T:A | F15L | 0.916 | likely_pathogenic |
| 13:32316505:T:G | F15L | 0.916 | likely_pathogenic |
| 13:32319250:T:C | F81L | 0.913 | likely_pathogenic |
| 13:32319252:C:A | F81L | 0.913 | likely_pathogenic |
| 13:32319252:C:G | F81L | 0.913 | likely_pathogenic |
| 13:32319198:A:C | K63N | 0.904 | likely_pathogenic |
| 13:32319198:A:T | K63N | 0.904 | likely_pathogenic |
| 13:32319101:G:C | W31S | 0.903 | likely_pathogenic |
| 13:32319113:T:C | L35P | 0.981 | likely_pathogenic |
| 13:32319100:T:A | W31R | 0.992 | likely_pathogenic |
| 13:32319100:T:C | W31R | 0.992 | likely_pathogenic |
| 13:32319104:T:G | F32C | 0.893 | likely_pathogenic |
| 13:32319113:T:G | L35R | 0.893 | likely_pathogenic |
| 13:32319193:T:C | F62L | 0.881 | likely_pathogenic |
| 13:32319195:T:A | F62L | 0.881 | likely_pathogenic |
| 13:32319195:T:G | F62L | 0.881 | likely_pathogenic |
| 13:32319089:T:G | I27R | 0.879 | likely_pathogenic |
| 13:32319100:T:G | W31G | 0.862 | likely_pathogenic |
| 13:32319124:G:C | A39P | 0.849 | likely_pathogenic |
| 13:32319083:G:A | G25E | 0.844 | likely_pathogenic |
| 13:32319251:T:C | F81S | 0.824 | likely_pathogenic |
| 13:32319115:T:C | S36P | 0.824 | likely_pathogenic |
| 13:32319083:G:T | G25V | 0.797 | likely_pathogenic |
| 13:32319242:C:A | P78Q | 0.794 | likely_pathogenic |
| 13:32316504:T:G | F15C | 0.790 | likely_pathogenic |
| 13:32316517:C:G | C19W | 0.775 | likely_pathogenic |
| 13:32319125:C:A | A39D | 0.763 | likely_pathogenic |
| 13:32316513:G:C | R18P | 0.763 | likely_pathogenic |
| 13:32319242:C:G | P78R | 0.760 | likely_pathogenic |
| 13:32319197:A:T | K63I | 0.755 | likely_pathogenic |
| 13:32319092:G:T | S28I | 0.751 | likely_pathogenic |
| 13:32319103:T:A | F32I | 0.739 | likely_pathogenic |
| 13:32319103:T:G | F32V | 0.750 | likely_pathogenic |
| 13:32319101:G:T | W31L | 0.740 | likely_pathogenic |
| 13:32316494:T:C | F12L | 0.727 | likely_pathogenic |
| 13:32316496:T:A | F12L | 0.727 | likely_pathogenic |
Section 7: Biological Pathways & Gene Ontology
Reactome Pathways
Total Pathway Count: 14
| Pathway ID | Pathway Name | Disease Pathway |
|---|
| R-HSA-5685942 | HDR through Homologous Recombination (HRR) | No |
| R-HSA-5693579 | Homologous DNA Pairing and Strand Exchange | No |
| R-HSA-5693616 | Presynaptic phase of homologous DNA pairing and strand exchange | No |
| R-HSA-5693554 | Resolution of D-loop Structures through SDSA | No |
| R-HSA-5693568 | Resolution of D-loop Structures through Holliday Junction Intermediates | No |
| R-HSA-5685939 | HDR through MMEJ (alt-NHEJ) | No |
| R-HSA-912446 | Meiotic recombination | No |
| R-HSA-9701192 | Defective HRR due to BRCA1 loss of function | Yes |
| R-HSA-9704331 | Defective HDR through HRR due to PALB2 loss of BRCA1 binding | Yes |
| R-HSA-9704646 | Defective HDR through HRR due to PALB2 loss of BRCA2/RAD51/RAD51C binding | Yes |
| R-HSA-9709275 | Impaired BRCA2 translocation to the nucleus | Yes |
| R-HSA-9709570 | Impaired BRCA2 binding to RAD51 | Yes |
| R-HSA-9709603 | Impaired BRCA2 binding to PALB2 | Yes |
| R-HSA-9763198 | Impaired BRCA2 binding to SEM1 (DSS1) | Yes |
Gene Ontology Annotations
Total GO Annotations: 44
Biological Process (26 terms)
| GO ID | Term |
|---|
| GO:0000724 | double-strand break repair via homologous recombination |
| GO:0006302 | double-strand break repair |
| GO:0000722 | telomere maintenance via recombination |
| GO:0006289 | nucleotide-excision repair |
| GO:0006355 | regulation of DNA-templated transcription |
| GO:0045893 | positive regulation of DNA-templated transcription |
| GO:0030330 | DNA damage response, signal transduction by p53 class mediator |
| GO:0042771 | intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator |
| GO:0007283 | spermatogenesis |
| GO:0007141 | male meiosis I |
| GO:0008585 | female gonad development |
| GO:0001556 | oocyte maturation |
| GO:0001833 | inner cell mass cell proliferation |
| GO:0007420 | brain development |
| GO:0010165 | response to X-ray |
| GO:0010225 | response to UV-C |
| GO:0010332 | response to gamma radiation |
| GO:0071479 | cellular response to ionizing radiation |
| GO:0051298 | centrosome duplication |
| GO:0032465 | regulation of cytokinesis |
| GO:0045931 | positive regulation of mitotic cell cycle |
| GO:0033600 | negative regulation of mammary gland epithelial cell proliferation |
| GO:0070200 | establishment of protein localization to telomere |
| GO:0071425 | hematopoietic stem cell proliferation |
| GO:0090398 | cellular senescence |
| GO:1990426 | mitotic recombination-dependent replication fork processing |
Molecular Function (8 terms)
| GO ID | Term |
|---|
| GO:0003697 | single-stranded DNA binding |
| GO:0002020 | protease binding |
| GO:0042802 | identical protein binding |
| GO:0043015 | gamma-tubulin binding |
| GO:0010484 | histone H3 acetyltransferase activity |
| GO:0010485 | histone H4 acetyltransferase activity |
Cellular Component (10 terms)
| GO ID | Term |
|---|
| GO:0005634 | nucleus |
| GO:0005654 | nucleoplasm |
| GO:0005829 | cytosol |
| GO:0005813 | centrosome |
| GO:0000781 | chromosome, telomeric region |
| GO:0000800 | lateral element |
| GO:0000152 | nuclear ubiquitin ligase complex |
| GO:0030141 | secretory granule |
| GO:0032991 | protein-containing complex |
| GO:0033593 | BRCA2-MAGE-D1 complex |
| GO:1990391 | DNA repair complex |
Section 8: Protein Interactions & Molecular Networks
STRING Interactions
Total Interaction Count: 3,778+
TOP 50 Highest-Confidence Interacting Proteins
| UniProt ID | Gene Symbol | Score | Protein Name |
|---|
| P38398 | BRCA1 | 999 | Breast cancer type 1 susceptibility protein |
| Q06609 | RAD51 | 999 | DNA repair protein RAD51 homolog 1 |
| Q86YC2 | PALB2 | 999 | Partner and localizer of BRCA2 |
| Q9BXW9 | FANCD2 | 999 | Fanconi anemia group D2 protein |
| Q7Z589 | EMSY | 997 | BRCA2-interacting transcriptional repressor |
| Q6ZVN7 | HSF2BP | 996 | Heat shock factor 2-binding protein |
| Q99728 | BARD1 | 996 | BRCA1-associated RING domain protein 1 |
| Q9P287 | BCCIP | 994 | BRCA2 and CDKN1A-interacting protein |
| O15287 | FANCG | 991 | Fanconi anemia group G protein |
| P43351 | FANCM | 991 | Fanconi anemia group M protein |
| O43542 | XRCC3 | 988 | DNA repair protein XRCC3 |
| Q9NVI1 | FANCI | 988 | Fanconi anemia group I protein |
| O43502 | RFC5 | 976 | Replication factor C subunit 5 |
| P04637 | TP53 | 975 | Cellular tumor antigen p53 |
| Q9BX63 | FANCL | 975 | E3 ubiquitin-protein ligase FANCL |
| Q13315 | ATM | 972 | Serine-protein kinase ATM |
| P21333 | FLNA | 970 | Filamin-A |
| O96017 | CHK2 | 969 | Serine/threonine-protein kinase Chk2 |
| O15360 | FANCA | 963 | Fanconi anemia group A protein |
| Q99708 | RBBP8 | 961 | DNA endonuclease RBBP8 |
| O43543 | XRCC2 | 960 | DNA repair protein XRCC2 |
| P09874 | PARP1 | 942 | Poly [ADP-ribose] polymerase 1 |
| O75771 | RAD52 | 938 | DNA repair protein RAD52 homolog |
| P49959 | MRE11 | 932 | Double-strand break repair protein MRE11 |
| Q8IYD8 | SPIDR | 929 | Scaffolding protein involved in DNA repair |
| P43246 | MSH2 | 926 | DNA mismatch repair protein Msh2 |
| P52701 | MSH6 | 924 | DNA mismatch repair protein Msh6 |
| Q00597 | FANCC | 918 | Fanconi anemia group C protein |
| O75330 | HLTF | 909 | Helicase-like transcription factor |
| Q9NPI8 | RNF168 | 908 | E3 ubiquitin-protein ligase RNF168 |
IntAct Curated Interactions
Total IntAct Records: 301
| Key Interactors | Interaction Type | Confidence |
|---|
| RAD51 | direct interaction | 0.98 |
| PALB2 | physical association | 0.97 |
| BRCA1 | association | 0.73 |
| SEM1 (DSS1) | physical association | 0.83 |
| DMC1 | direct interaction | 0.76 |
| FANCD2 | physical association | 0.69 |
| TP53 | direct interaction | 0.65 |
| RPA2 | association | 0.46 |
BioGRID Interactions
Total BioGRID Interactions: 753+
Key experimental systems: Affinity Capture-MS, Affinity Capture-Western, Two-hybrid, Reconstituted Complex, Synthetic Lethality
SIGNOR Signaling Interactions
Total Signaling Relations: 19
| Entity A | Entity B | Effect | Mechanism |
|---|
| PALB2 | BRCA2 | up-regulates | binding |
| BRCA2 | RAD51 | up-regulates activity | binding |
| BRCA2 | POLH | up-regulates | binding |
| PLK1 | BRCA2 | down-regulates activity | phosphorylation |
| FANCD2 | BRCA2 | up-regulates activity | binding |
| FANCD2 | BRCA2 | up-regulates activity | relocalization |
| EMSY | BRCA2 | down-regulates activity | binding |
Protein Similarity
ESM2 Structural/Embedding Similarity
Total Similar Proteins: 41
| UniProt ID | Top Similarity | Avg Similarity |
|---|
| Q6J6I8 | 1.0000 | 0.9929 |
| Q9GKK8 | 1.0000 | 0.9931 |
| F6ULY3 | 0.9999 | 0.9932 |
| G7NY55 | 0.9999 | 0.9933 |
| P38398 (BRCA1) | 0.9999 | 0.9931 |
| Q8N9V7 | 0.9998 | 0.9931 |
| G3S077 | 0.9998 | 0.9935 |
| O35923 (Mouse Brca2) | 0.9995 | 0.9921 |
| P97929 (Rat Brca2) | 0.9995 | 0.9927 |
DIAMOND Sequence Similarity
Total Homologous Proteins: 4
| UniProt ID | Top Identity (%) | Top Bitscore |
|---|
| O35923 (Mouse Brca2) | 82.90 | 5,179 |
| P97929 (Rat Brca2) | 82.90 | 5,199 |
| Q864S8 | 67.70 | 4,127 |
Section 9: Transcription Factor Regulatory Data
Note: BRCA2 is NOT a transcription factor. However, regulatory information about BRCA2 is available.
BRCA2 as a Potential Regulatory Protein
BRCA2 has been reported to interact with transcriptional machinery components:
| Target Gene | Regulation Type | Notes |
|---|
| DMC1 | Unknown | BRCA2 → DMC1 |
| PSMD3 | Unknown | BRCA2 → PSMD3 |
| PSMD6 | Unknown | BRCA2 → PSMD6 |
| RAD51 | Unknown | BRCA2 → RAD51 |
Upstream Regulators of BRCA2 (CollecTRI Database)
Total TF Regulators: 19
| Transcription Factor | Regulation | Confidence |
|---|
| BRCA1 | Unknown | - |
| NFKB1 | Activation | High |
| NFKB | Activation | High |
| RELA | Activation | High |
| MYC | Unknown | High |
| ELF1 | Unknown | High |
| ESR1 | Unknown | High |
| FOXM1 | Unknown | High |
| USF1 | Unknown | High |
| USF2 | Unknown | High |
| SNAI2 | Unknown | High |
| TP53 | Repression | High |
| PARP1 | Repression | High |
| ESR2 | Repression | High |
| CTBP1 | Repression | - |
| HDAC1 | Repression | - |
| MYOD1 | Repression | Low |
| HMG20B | Unknown | - |
| ESRRB | Unknown | - |
| KDM5B | - | Low |
Section 10: Drug & Pharmacology Data
PharmGKB Status
| Attribute | Value |
|---|
| PharmGKB ID | PA25412 |
| VIP Gene (Very Important Pharmacogene) | Yes |
| Has CPIC Guideline | No |
BRCA2 and PARP Inhibitor Sensitivity
BRCA2 is a critical biomarker for PARP inhibitor therapy. Loss-of-function mutations in BRCA2 create synthetic lethality with PARP inhibition.
Key Drug Associations
Patients with BRCA2 mutations show enhanced sensitivity to:
| Drug Class | Representative Drugs | Mechanism |
|---|
| PARP Inhibitors | Olaparib (Lynparza), Rucaparib (Rubraca), Niraparib (Zejula), Talazoparib (Talzenna) | Synthetic lethality with HR deficiency |
| Platinum Agents | Cisplatin, Carboplatin | DNA crosslinking; HR-deficient cells cannot repair |
Synthetic Lethality Partners (BioGRID)
Key synthetic lethal interactions identified:
| Gene | Experimental System |
|---|
| PARP1 | Synthetic Lethality |
| PARP2 | Synthetic Lethality |
| CDK9 | Negative Genetic |
| KDM5C | Negative Genetic |
| HDAC6 | Negative Genetic |
| SMARCB1 | Negative Genetic |
Section 11: Expression Profiles
Bgee Expression Summary
| Attribute | Value |
|---|
| Expression Breadth | Ubiquitous |
| Total Present Calls | 184 |
| Total Absent Calls | 100 |
| Total Conditions | 284 |
| Max Expression Score | 94.30 |
| Average Expression Score | 57.20 |
| Gold Quality Count | 266 |
TOP 30 Tissues with Highest Expression
| Rank | Tissue/Cell Type | Score | Quality |
|---|
| 1 | Male germ line stem cell in testis | 94.30 | Gold |
| 2 | Secondary oocyte | 88.42 | Gold |
| 3 | Ventricular zone | 84.77 | Gold |
| 4 | Primordial germ cell in gonad | 84.70 | Gold |
| 5 | Ganglionic eminence | 80.61 | Gold |
| 6 | Oocyte | 78.93 | Gold |
| 7 | Granulocyte | 76.11 | Gold |
| 8 | Bone marrow cell | 75.12 | Gold |
| 9 | Bone marrow | 74.05 | Gold |
| 10 | Embryo | 73.93 | Gold |
| 11 | Trabecular bone tissue | 73.41 | Gold |
| 12 | Stromal cell of endometrium | 72.55 | Gold |
| 13 | Calcaneal tendon | 71.64 | Gold |
| 14 | Testis | 71.35 | Gold |
| 15 | Colonic epithelium | 70.49 | Gold |
| 16 | Left testis | 69.39 | Gold |
| 17 | Right testis | 69.28 | Gold |
| 18 | Leukocyte | 68.83 | Gold |
| 19 | Monocyte | 68.79 | Gold |
| 20 | Mononuclear cell | 68.44 | Gold |
| 21 | Rectum | 68.44 | Gold |
| 22 | Adrenal tissue | 68.33 | Gold |
| 23 | Lymph node | 66.86 | Gold |
| 24 | Buccal mucosa cell | 66.16 | Gold |
| 25 | Cortical plate | 65.28 | Gold |
| 26 | Spleen | 65.25 | Gold |
| 27 | Vermiform appendix | 64.89 | Gold |
| 28 | Esophagus mucosa | 63.64 | Gold |
| 29 | Gall bladder | 62.89 | Gold |
| 30 | Small intestine Peyer's patch | 62.80 | Gold |
Key Expression Pattern: Highest expression in germline cells (testis, oocytes) consistent with BRCA2's role in meiotic recombination.
Single-Cell Expression Data (Expression Atlas)
| Experiment ID | Description | Cells |
|---|
| E-CURD-114 | Human airway epithelium (in vivo) | 81,801 |
| E-MTAB-6108 | Stem cell-derived retinal ganglion cells | 1,742 |
| E-GEOD-99795 | LNCaP prostate carcinoma cells +/- androgen | 144 |
| E-ENAD-17 | Glioblastoma cells from primary tumors | 96 |
Section 12: Disease Associations
GenCC Gene-Disease Associations
Total Curated Associations: 11
| Disease | OMIM/MONDO | Classification | Inheritance | Submitter |
|---|
| Breast-ovarian cancer, familial, susceptibility to, 2 | OMIM:612555 | Definitive | AD | Ambry Genetics |
| Breast-ovarian cancer, familial, susceptibility to, 2 | OMIM:612555 | Strong | AD | Genomics England |
| Breast-ovarian cancer, familial, susceptibility to, 2 | OMIM:612555 | Strong | AD | Labcorp Genetics |
| Fanconi anemia complementation group D1 | OMIM:605724 | Definitive | AR | Ambry Genetics |
| Fanconi anemia complementation group D1 | OMIM:605724 | Definitive | AR | G2P |
| Fanconi anemia complementation group D1 | OMIM:605724 | Strong | AR | Labcorp Genetics |
| Pancreatic cancer, susceptibility to, 2 | OMIM:613347 | Strong | AD | Genomics England |
| Sarcoma | MONDO:0005089 | Moderate | AD | Genomics England |
| Medulloblastoma | OMIM:155255 | Limited | AD | Ambry Genetics |
| Hereditary breast ovarian cancer syndrome | ORPHANET:145 | Supportive | AD | Orphanet |
| Fanconi anemia | ORPHANET:84 | Supportive | AR | Orphanet |
Orphanet Disease Associations
Total Associations: 12
| Orphanet ID | Disease | Type | Gene Count |
|---|
| 145 | Hereditary breast and/or ovarian cancer syndrome | Disease | 15 |
| 84 | Fanconi anemia | Malformation syndrome | 23 |
| 1331 | Familial prostate cancer | Disease | 15 |
| 1333 | Familial pancreatic carcinoma | Disease | 9 |
| 654 | Nephroblastoma | Disease | 12 |
| 70567 | Cholangiocarcinoma | Disease | 4 |
| 178 | Chordoma | Disease | 3 |
| 227535 | Hereditary breast cancer | Disease | 10 |
| 319462 | Inherited cancer-predisposing syndrome due to biallelic BRCA2 mutations | Disease | 1 |
| 440437 | Familial colorectal cancer Type X | Disease | 10 |
| 667662 | Breast implant-associated anaplastic large cell lymphoma | Disease | 7 |
| 694963 | Inflammatory breast cancer | Disease | 2 |
HPO Phenotype Associations
Total Phenotype Count: 217
TOP 50 Associated Phenotypes
| HPO ID | Phenotype |
|---|
| HP:0000006 | Autosomal dominant inheritance |
| HP:0000007 | Autosomal recessive inheritance |
| HP:0001903 | Anemia |
| HP:0001873 | Thrombocytopenia |
| HP:0001249 | Intellectual disability |
| HP:0001263 | Global developmental delay |
| HP:0000252 | Microcephaly |
| HP:0001510 | Growth delay |
| HP:0001511 | Intrauterine growth retardation |
| HP:0000957 | Cafe-au-lait spot |
| HP:0001172 | Abnormal thumb morphology |
| HP:0000028 | Cryptorchidism |
| HP:0000085 | Horseshoe kidney |
| HP:0000086 | Ectopic kidney |
| HP:0001392 | Abnormality of the liver |
| HP:0001402 | Hepatocellular carcinoma |
| HP:0000819 | Diabetes mellitus |
| HP:0001871 | Abnormality of blood and blood-forming tissues |
| HP:0000478 | Abnormality of the eye |
| HP:0000568 | Microphthalmia |
| HP:0001631 | Atrial septal defect |
| HP:0001636 | Tetralogy of Fallot |
| HP:0000365 | Hearing impairment |
| HP:0000135 | Hypogonadism |
| HP:0000027 | Azoospermia |
| ... (and 167 more phenotypes) | |
GWAS Associations
Total GWAS Associations: 21
| Study ID | Trait | p-value |
|---|
| GCST002466_3 | Lung cancer | 5×10⁻²⁰ |
| GCST002466_1 | Lung cancer | 2×10⁻¹⁹ |
| GCST004748_107 | Lung cancer | 6×10⁻¹⁶ |
| GCST004750_101 | Squamous cell lung carcinoma | 1×10⁻¹⁵ |
| GCST004988_275 | Breast cancer | 3×10⁻¹⁵ |
| GCST004233_43 | LDL cholesterol levels | 5×10⁻¹⁴ |
| GCST003587_12 | Cancer | 8×10⁻¹² |
| GCST002222_55 | LDL cholesterol | 2×10⁻¹¹ |
| GCST003588_18 | Cancer (pleiotropy) | 5×10⁻¹⁰ |
| GCST008870_53 | Keratinocyte cancer (MTAG) | 6×10⁻¹⁰ |
| GCST008872_16 | Squamous cell carcinoma | 1×10⁻⁹ |
| GCST008871_72 | Basal cell carcinoma | 2×10⁻⁹ |
| GCST004233_59 | LDL cholesterol levels | 3×10⁻⁹ |
| GCST004746_14 | Small cell lung carcinoma | 3×10⁻⁸ |
| GCST004236_11 | LDL cholesterol levels | 3×10⁻⁸ |
| GCST001937_19 | Breast cancer | 5×10⁻⁸ |
| GCST004749_95 | Lung cancer in ever smokers | 6×10⁻⁸ |
| GCST010148_23 | Cutaneous squamous cell carcinoma | 1×10⁻⁶ |
| GCST001930_11 | Breast cancer | 6×10⁻⁶ |
| GCST010243_213 | Apolipoprotein B levels | 3×10⁻²⁷ |
| GCST010245_75 | LDL cholesterol levels | 4×10⁻¹⁵ |
SUMMARY STATISTICS
| Category | Count |
|---|
| Ensembl Transcripts | 19 |
| RefSeq Transcripts (Human) | 7 |
| UniProt Entries | 14 |
| Exons (Canonical) | 27 |
| PDB Structures | 14 |
| InterPro Domains | 10 |
| ClinVar Variants | 21,181 |
| SpliceAI Predictions | 3,855 |
| AlphaMissense Predictions | 22,763 |
| GO Annotations | 44 |
| Reactome Pathways | 14 |
| STRING Interactions | 3,778+ |
| IntAct Interactions | 301 |
| BioGRID Interactions | 753+ |
| HPO Phenotypes | 217 |
| GWAS Associations | 21 |
| Orphanet Diseases | 12 |
| GenCC Disease-Gene Associations | 11 |
This comprehensive BRCA2 reference document is complete. It covers all 12 sections with:
Key Highlights:
- Gene: HGNC:1101 | ENSG00000139618 | Entrez 675 | OMIM 600185 | Chr13:32,315,086-32,400,268
- Transcripts: 19 Ensembl transcripts (6 protein-coding), MANE Select: NM_000059
- Protein: P51587 (3,418 aa, 384 kDa), 10 InterPro domains
- Structures: 14 PDB entries (best resolution: 1.21 Å)
- Variants: 21,181 ClinVar entries, 22,763 AlphaMissense predictions, 3,855 SpliceAI predictions
- Pathways: 14 Reactome pathways (DNA repair/homologous recombination)
- Interactions: 3,778+ STRING interactions (top: BRCA1, RAD51, PALB2)
- Expression: Ubiquitous; highest in germline cells (testis, oocytes)
- Diseases: Definitive association with hereditary breast-ovarian cancer (AD) and Fanconi anemia D1 (AR)
- Pharmacology: VIP gene for PARP inhibitor sensitivity (Olaparib, etc.)