出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/08/06 02:40:23」(JST)
ITGAL | |||||||||||||||||
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Identifiers | |||||||||||||||||
Aliases | ITGAL, CD11A, LFA-1, LFA1A, integrin subunit alpha L | ||||||||||||||||
External IDs | MGI: 96606 HomoloGene: 1666 GeneCards: 3683 | ||||||||||||||||
Genetically Related Diseases | |||||||||||||||||
Disease Name | References | ||||||||||||||||
ulcerative colitis |
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RNA expression pattern | |||||||||||||||||
More reference expression data | |||||||||||||||||
Orthologs | |||||||||||||||||
Species | Human | Mouse | |||||||||||||||
Entrez |
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Ensembl |
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UniProt |
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RefSeq (mRNA) |
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RefSeq (protein) |
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Location (UCSC) | Chr 16: 30.47 – 30.52 Mb | Chr 7: 127.3 – 127.34 Mb | |||||||||||||||
PubMed search | [2] | [3] | |||||||||||||||
Wikidata | |||||||||||||||||
View/Edit Human | View/Edit Mouse |
Integrin, alpha L (antigen CD11A (p180), lymphocyte function-associated antigen 1; alpha polypeptide), also known as ITGAL, is a human gene which functions in the immune system. It is involved in cellular adhesion and costimulatory signaling. It is the target of the drug efalizumab.
ITGAL encodes the integrin alpha L chain. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This I-domain containing alpha integrin combines with the beta 2 chain (ITGB2) to form the integrin lymphocyte function-associated antigen-1 (LFA-1), which is expressed on all leukocytes. LFA-1 plays a central role in leukocyte intercellular adhesion through interactions with its ligands, ICAMs 1-3 (intercellular adhesion molecules 1 through 3), and also functions in lymphocyte costimulatory signaling.[4]
CD11a is one of the two components, along with CD18, which form lymphocyte function-associated antigen-1.
Efalizumab acted as an immunosuppressant by binding to CD11a, but was withdrawn in 2009 due to severe side effects being associated with the drug.
CD11a has been shown to interact with ICAM-1.[5][6][7]
PDB gallery
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Proteins: clusters of differentiation (see also list of human clusters of differentiation)
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1-50 |
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51-100 |
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101-150 |
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151-200 |
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201-250 |
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251-300 |
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301-350 |
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Integrins
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Alpha |
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Beta |
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Dimers |
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see also cell surface receptor deficiencies
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This article on a gene on human chromosome 16 is a stub. You can help Wikipedia by expanding it.
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リンク元 | 「接着分子」「白血球」「インテグリン」「白血球粘着不全症」「ICAM-1」 |
関連記事 | 「CD1」 |
グループ名 | 機能 | 名称 | 別名 | 組織分布 | リガンド | |
セレクチン | 炭化水素鎖に結合。 白血球-内皮細胞の反応を開始 |
P-selectin | PADGEN | CD62P | 活性化した内皮細胞、活性化した血小板 | PSGL-1, sialyl-Lewisx |
E-selectin | ELAM-1 | CD62E | 活性化した内皮細胞 | sialyl-Lewisx | ||
インテグリン | CAMや細胞外マトリックスに結合。 強い結合 |
LFA-1 | αL:β2 | CD11a:CD18 | 単球、T細胞、マクロファージ、好中球、樹状細胞 | ICAMs |
CR3, Mac-1 | αM:β2 | CD11b:CD18 | 好中球、単球、マクロファージ | ICAM-1, iC3b, fibrinogen | ||
CR4, p150.95 | αX:β2 | CD11c:CD18 | 樹状細胞、マクロファージ、好中球 | iC3b | ||
VLA-5 | α5:β1 | CD49d:CD29 | 単球、マクロファージ | fibronectin | ||
免疫グロブリンスーパーファミリー | 細胞結合で様々に働く。 インテグリンの基質 |
ICAM-1 | CD54 | 活性化した内皮細胞 | LFA-1, MAC1 | |
ICAM-2 | CD102 | 非活性化状態の内皮細胞、樹状細胞 | LFA-1 | |||
VCAM-1 | CD106 | 活性化した内皮細胞 | VLA-4 | |||
PECAM | CD31 | 活性化した白血球、内皮細胞間の結合 | CD31 |
名称 | 分布組織 | リガンド | ||
CD2 | LFA-2 | T細胞 | LFA-1 | CD53 |
ICAM-1 | CD54 | 活性化した血管、リンパ球、樹状細胞 | LFA-1, Mac-1 | |
ICAM-2 | CD102 | 非活性化状態の血管 | LFA-1 | |
ICAM-3 | CD50 | Naive T cells | DC-SIGN, LFA-1 | |
LFA-3 | CD58 | リンパ球、APC | CD2 | |
VCAM-1 | CD106 | 活性化した内皮細胞 | VLA-4 |
-接着分子
-細胞接着分子
-カドヘリン
07解 | 異メ | 流マ | HIM.A-1 | ||||
顆粒球 | 好中球 | 桿状核球 | 40~70 | 44~66 | 40~60 | 4~14 | 0~5 |
分葉核球 | 43~59 | 40~70 | |||||
好酸球 | 2~4 | 0~ 4 | 2~4 | 0~6 | |||
好塩基球 | 0~2 | 0~0.5 | 0~2 | 0~2 | |||
無顆粒球 | リンパ球 | 25~40 | 30~38 | 26~40 | 20~50 | ||
単球 | 3~6 | 0~ 5 | 3~6 | 4~8 |
(margination)
(rolling)
(adheresion & arrested)
(transmigration)
血管内皮細胞 | 白血球 | |
Rolling | ||
E-selectin | - | 糖鎖(SLex) |
P-selectin | - | 糖鎖 |
糖鎖(GlyCAM-1)(=CD34) | - | L-selectin |
Adhestion | ||
ICAM-1 | - | LFA-1 integlin(CD11a/CD18), Mac-1 integlin(CD11b/CD18) |
VCAM-1 | - | VLA-1 integlin |
transmigration | ||
PECAM-1(CD31) | - | PECAM-1(CD31) |
name | tissue distribution | ligand | ||||||
単球 | T細胞 | マクロファージ | 好中球 | 樹状細胞 | ||||
αL:β2 | LFA-1 | CD11a:CD18 | ○ | ○ | ○ | ○ | ○ | ICAMs |
αM:β2 | CR3, Mac-1 | CD11b:CD18 | ○ | ○ | ○ | ICAM-1, iC3b, fibrinogen | ||
αx:β2 | CR4, p150.90 | CD11c:CD18 | ○ | ○ | ○ | iC3b | ||
α5:β1 | VLA-5 | CD49d:CD29 | ○ | ○ | fibronectin |
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