Background：Integrin alpha 4 beta 7 is an integrin family adhesion receptor that shares subunits with alpha 4 beta 1 (VLA4) and the E-Cadherin receptor, alpha E beta 7 .
Integrin alpha 4 beta 7, which is critical for homing to intestinal mucosa, is induced during T cell activation in Peyer’s patches or mesenteric lymph nodes.Its expression requires signals from local dendritic and stromal cells, including secreted retinoic acid.
The HIV-1 envelope protein gp120 binds to the active form of Integrin alpha 4 beta 7, and this may or may not account for the concentration of HIV-1 virus in the gut-associated lymphoid tissue (GALT).
Integrin alpha 4 beta 7 may also be involved in lymphocyte trafficking in acute intestinal graft vs.
host disease (GVHD).
仕様
サイズ：100ug
Source：Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free (IT7-H52W4) is expressed from human 293 cells (HEK293). It contains AA Tyr 34 - Thr 977 (ITGA4) & Glu 20 - His 723 (ITGB7) (Accession # P13612-1 (ITGA4) & P26010-1 (ITGB7)).
Characteristics：Human ITGA4&ITGB7 Heterodimer Protein, His Tag&Tag Free, produced by co-expression of ITGA4 and ITGB7, has a calculated MW of 111.4 kDa (ITGA4) and 81.8 kDa (ITGB7). Subunit ITGA4 is fused with an acidic tail at the C-terminus and followed by a polyhistidine tag and subunit ITGB7 contains no tag but a basic tail at the C-terminus. The ITGA4 subunit is composed of a heavy chain (Tyr 34 - Arg 591, calculated MW 61.1 kDa) and a light chain (Ser 592 - Thr 977, calculated MW 50.3 kDa). Consequently ITGA4 migrates as 60-70 kDa, 80-85 kDa and 135-150 kDa, and ITGB1 as 100-133 kDa respectively under reducing (R) condition due to cleavage and glycosylation.
Endotoxin Level：Less than 1.0 EU per ug by the LAL method.
