Gene Information
Names
HUGO name: ITGB2
Alias(es):
- CD18
- LAD
- LCAMB
- LFA-1
- MF17
- cell surface adhesion glycoprotein
- Integrin, beta 2
- antigen CD18 (p95)
- lymphocyte function-associated antigen 1
- macrophage antigen 1 (mac-1) beta subunit)
- Integrin beta-2 precursor
- Cell surface adhesion glycoproteins LFA- 1/CR3/p150,95 beta-subunit
- Complement receptor C3 beta- subunit
Localization
Reference sequences
- DNA: AL163300 (EMBL)
- cDNA: M15395 (EMBL)
- Protein: P05107 (SWISSPROT)
- Other Sequences
Chromosomal location
Maps
Variations / Mutations
Other gene-based resources
Protein Information
Description
Protein function:
Integrin α-l/β-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. Integrins α-m/β-2 and α-x/β-2 are receptors for the IC3B fragment of the third complement component and for fibrinogen. Integrin α-x/β 2 recognizes the sequence g-p-r in fibrinogen α-chain. Integrin α-m/β-2 recognizes P1 and P2 peptides of fibrinogen gamma chain. Integrin α-m/β-2 is also a receptor for Factor X. Integrin α-d/β 2 is a receptor for ICAM3 and VCAM1.
Subunit:
Heterodimer of an α and a β subunit. β-2 associates with either α-l, α-m, α-x or α-d.
Subcellular location:
Type I membrane protein
Structures (PDB)
Domains
Extracellular domain: 23-700
Cytoplasmic domain: 724-769
Vwfa-like domain: 124-363
4 cysteine-rich tandem repeats domain: 449-617
Other features
Signal peptide: 1-22
Integrin beta-2: 23-769
Other related resourses:
- PIR: IJHULM
- InterPro: IPR002369; Integrin_B
- InterPro: IPR001169; Integrin_beta_C
- InterPro: IPR003659; Plexin-like
- InterPro: IPR002035; VWF_A
- Pfam: PF00362; integrin_B
- SMART: SM00187; INB
- SMART: SM00423; PSI
- SMART: SM00327; VWA
- PROSITE: PS00243; INTEGRIN_BETA
- PROSITE: PS00022; EGF_1
- PROSITE: PS01186; EGF_2
Expression
Expression pattern for human
Tissue | Expression (%) | Clones |
---|---|---|
thyroid gland | 12.92 | 2:1136 |
whole blood | 12.01 | 4:2445 |
nasopharynx | 11.36 | 1:646 |
smooth muscle | 11.34 | 1:647 |
subchondral bone | 5.51 | 1:1332 |
lung with fibrosis | 4.96 | 1:1479 |
muscle | 4.25 | 13:22471 |
B-cells | 3.55 | 8:16533 |
blood | 3.48 | 6:12646 |
T cells from T cell leukemia | 3.06 | 1:2397 |