ITGB1
protein-codingintegrin subunit beta 1, the group of Integrin beta subunits|CD molecules
Gene summary
Integrins are heterodimeric proteins made up of alpha and beta subunits. At least 18 alpha and 8 beta subunits have been described in mammals. Integrin family members are membrane receptors involved in cell adhesion and recognition in a variety of processes including embryogenesis, hemostasis, tissue repair, immune response and metastatic diffusion of tumor cells. This gene encodes a beta subunit. Multiple alternatively spliced transcript variants which encode different protein isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
Previous symbols:
- FNRB
- MSK12
- MDF2
MANE transcript
NM_002211.4
Inheritance
—
ClinVar variants
U:72B:6
Top phenotype
Pyloric stenosis
gnomAD constraint
pLI —, LoF o/e 0.15
Max pathogenic AF
—
Genomic locus
chr10:32,887,273-33,005,792
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~118.5 kbLoading mutation effect viewer...
GenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to ITGB1 variants in ClinVar
not specifiedTotal: 65
not providedTotal: 7
Pyloric stenosisTotal: 1
Neural tube defectTotal: 1
Esophageal atresiaTotal: 1
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_002211.4. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 6 | 2 | 2 | 10 | ||
| missense | 59 | 2 | 61 | |||
| nonsense | 1 | 1 | ||||
| start loss | 0 | |||||
| frameshift | 1 | 1 | ||||
| splice donor/acceptor (+/-2bp) | 5 | 5 | ||||
| Total | 0 | 0 | 72 | 4 | 2 | 78 |
Loading ClinVar variants...
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
Showing 4 of 185 transcripts
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_002202.2 | 15 | MANE Select | |
| Ensembl | ENSP00000303351.3 | 15 | MANE Select | |
| RefSeq | NP_391988.1 | 15 | Standard | |
| RefSeq | NP_596867.1 | 15 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| itgb1a | Danio rerio | Structure: dorsal longitudinal anastomotic vessel Quality: decreased occurrence abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- PI3K-Akt signaling pathway - Homo sapiens (human)
- Platelet activation - Homo sapiens (human)
- Cell adhesion molecules (CAMs) - Homo sapiens (human)
- ECM-receptor interaction - Homo sapiens (human)
- Focal adhesion - Homo sapiens (human)
Biological Process
- G1/S transition of mitotic cell cycle
- in utero embryonic development
- cell fate specification
- cell migration involved in sprouting angiogenesis
- phagocytosis
Molecular Function
- virus receptor activity
- fibronectin binding
- protease binding
- actin binding
- integrin binding
Cellular Component
- ruffle
- cytoplasm
- plasma membrane
- focal adhesion
- integrin complex
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000396033
- Coding exons
- 15
- Length
- 105474
- Individuals with no LoFs
- 125713
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 12
- Defined
- 125725
- p
- 0.0000477
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 3.46 | 227 | 429 | 0.530 | 0.0000218 | 5328 |
| Missense (PolyPhen) | 53 | 189.7 | 0.27939 | 2384 | ||
| Synonymous | 0.501 | 142 | 150 | 0.948 | 0.00000829 | 1395 |
| Loss of Function | 4.87 | 6 | 38.7 | 0.155 | 0.00000181 | 524 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.00024 | 0.00017 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.000046 | 0.000046 | rare |
| European (Non-Finnish) | 0.000036 | 0.000035 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Integrins alpha-1/beta-1, alpha-2/beta-1, alpha-10/beta- 1 and alpha-11/beta-1 are receptors for collagen. Integrins alpha- 1/beta-1 and alpha-2/beta-2 recognize the proline-hydroxylated sequence G-F-P-G-E-R in collagen. Integrins alpha-2/beta-1, alpha- 3/beta-1, alpha-4/beta-1, alpha-5/beta-1, alpha-8/beta-1, alpha- 10/beta-1, alpha-11/beta-1 and alpha-V/beta-1 are receptors for fibronectin. Alpha-4/beta-1 recognizes one or more domains within the alternatively spliced CS-1 and CS-5 regions of fibronectin. Integrin alpha-5/beta-1 is a receptor for fibrinogen. Integrin alpha-1/beta-1, alpha-2/beta-1, alpha-6/beta-1 and alpha-7/beta-1 are receptors for lamimin. Integrin alpha-4/beta-1 is a receptor for VCAM1. It recognizes the sequence Q-I-D-S in VCAM1. Integrin alpha-9/beta-1 is a receptor for VCAM1, cytotactin and osteopontin. It recognizes the sequence A-E-I-D-G-I-E-L in cytotactin. Integrin alpha-3/beta-1 is a receptor for epiligrin, thrombospondin and CSPG4. Alpha-3/beta-1 may mediate with LGALS3 the stimulation by CSPG4 of endothelial cells migration. Integrin alpha-V/beta-1 is a receptor for vitronectin. Beta-1 integrins recognize the sequence R-G-D in a wide array of ligands. Isoform 2 interferes with isoform 1 resulting in a dominant negative effect on cell adhesion and migration (in vitro). When associated with alpha-7/beta-1 integrin, regulates cell adhesion and laminin matrix deposition. Involved in promoting endothelial cell motility and angiogenesis. Involved in osteoblast compaction through the fibronectin fibrillogenesis cell-mediated matrix assembly process and the formation of mineralized bone nodules. May be involved in up-regulation of the activity of kinases such as PKC via binding to KRT1. Together with KRT1 and RACK1, serves as a platform for SRC activation or inactivation. Plays a mechanistic adhesive role during telophase, required for the successful completion of cytokinesis. Integrin alpha-3/beta-1 provides a docking site for FAP (seprase) at invadopodia plasma membranes in a collagen- dependent manner and hence may participate in the adhesion, formation of invadopodia and matrix degradation processes, promoting cell invasion. ITGA4:ITGB1 binds to fractalkine (CX3CL1) and may act as its coreceptor in CX3CR1-dependent fractalkine signaling (PubMed:23125415, PubMed:24789099). ITGA4:ITGB1 and ITGA5:ITGB1 bind to PLA2G2A via a site (site 2) which is distinct from the classical ligand-binding site (site 1) and this induces integrin conformational changes and enhanced ligand binding to site 1 (PubMed:18635536, PubMed:25398877). ITGA5:ITGB1 acts as a receptor for fibrillin-1 (FBN1) and mediates R-G-D-dependent cell adhesion to FBN1 (PubMed:12807887, PubMed:17158881). ITGA5:ITGB1 is a receptor for IL1B and binding is essential for IL1B signaling (PubMed:29030430). {ECO:0000269|PubMed:10455171, ECO:0000269|PubMed:12473654, ECO:0000269|PubMed:12807887, ECO:0000269|PubMed:16256741, ECO:0000269|PubMed:17158881, ECO:0000269|PubMed:18635536, ECO:0000269|PubMed:18804435, ECO:0000269|PubMed:19064666, ECO:0000269|PubMed:21768292, ECO:0000269|PubMed:23125415, ECO:0000269|PubMed:24789099, ECO:0000269|PubMed:25398877, ECO:0000269|PubMed:29030430, ECO:0000269|PubMed:7523423}.; FUNCTION: (Microbial infection) Integrin ITGA2:ITGB1 acts as a receptor for Human echoviruses 1 and 8. {ECO:0000269|PubMed:8411387}.; FUNCTION: (Microbial infection) Acts as a receptor for Epstein- Barr virus/HHV-4. {ECO:0000269|PubMed:17945327}.; FUNCTION: (Microbial infection) Integrin ITGA2:ITGB1 acts as a receptor for Human rotavirus. {ECO:0000269|PubMed:12941907}.; FUNCTION: (Microbial infection) In case of HIV-1 infection, integrin ITGA5:ITGB1 binding to extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions. {ECO:0000269|PubMed:10397733}.;
Recessive Scores
- pRec
- 0.852
Intolerance Scores
- LoFtool
- 0.0195
- RVIS EVS
- -1.18
- RVIS percentile EVS
- 5.94
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- S
- Essential (gene trap)
- H
- Indispensability pred.
- E
- Indispensability score
- 0.826
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |