Recombinant Human B7-H3(4Ig)/B7-H3b Protein

重组人B7-H3 (4Ig)/B7-H3b蛋白 | 重组人 B7-H3(4Ig)/B7-H3b 蛋白

4Ig-B7-H3 | B7 homolog 3 | B7-H3 | Costimulatory molecule | 4Ig B7 H3 | 4Ig-B7-H3 | B7H34Ig-B7-H3 | B7-H3B7 homolog 3 | AU016588 | B7 H3 | B7 homolog 3 | B7-H3 | B7H3 | B7RP-2 | CD_antigen=CD276 | CD276 | CD276 antigen | CD276 molecule | CD276_HUMAN | Cos

rp176244-50μg

50μg

无动物源

≥95%(SDS-PAGE)

>95% (SDS-PAGE)

Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining Description: Human B7 homolog 3 (B7-H3) is a member of the B7 family of immune proteins that provide signals for the regulation of immune responses. Other family members include B7-1, B7-2, B7-H1/PD-L1, B7-H2, and PD-L2. B7 family proteins are type I transmembrane immunoglobulin (Ig) superfamily members that contain extracellular Ig V‑like and Ig C‑like domains with a short cytoplasmic tail. Among the family members there is about 20 - 40% amino acid (aa) sequence identity. B7-H3 was initially reported to be a 316 aa type I transmembrane precursor protein that contained a signal sequence, an extracellular region with one V‑type and one C‑type Ig domain, a transmembrane segment and a short cytoplasmic tail. Subsequent studies have identified a second 110 kDa form whose precursor is 534 aa in length. Termed 4IgB7-H3 or B7-H3b, this molecule has two additional Ig-like domains (one V‑type and one C‑type) and shows a ubiquituous expression pattern. It would appear that the human 4Ig form is the principal, if not the only form of B7-H3. Its precursor contains a 26 aa signal sequence, a 435 aa extracellular region, a 31 aa transmembrane domain, and a 42 aa cytoplasmic tail. The four Ig-like domains alternate between V‑type and C‑type, and apparently are the consequence of a V‑C type tandem duplication. B7-H3b is expressed on dendritic cells as well as activated T, B and NK cells. The mouse gene differs from that of human in that it cannot code for four Ig-like domains; only a V‑type:C‑type pair. Human B7-H3b binding to an undefined receptor has shown to be inhibitory to NK cell illing and cytokine release. It also seems to be required for late stage osteoblast differentiation.

1、Measured by its binding ability in a functional ELISA. Immobilized CD276 mouse mAb at 1.0 μg/mL can bind Recombinant Human B7-H3 (4Ig)/B7-H3b Protein (rp176244) with the EC50 of 51.95 ng/mL. 2、Measured by its binding ability in a functional ELISA. Immobilized human Human B7-H3 (4Ig)/B7-H3b (rp176244) at 1.0 μg/mL can bind CD276 mouse mAb with the EC50 of 1.86 ng/mL.

重组表达

47.9 kDa

C-His

63.2-82.3 kDa, under reducing conditions; 58.6-73.9 kDa, under non-reducing condition

HEK293 Accession #: Q5ZPR3 | HEK293

<1.0 EU/μg

人(Human)

29-461 aa

LEVQVPEDPVVALVGTDATLCCSFSPEPGFSLAQLNLIWQLTDTKQLVHSFAEGQDQGSAYANRTALFPDLLAQGNASLRLQRVRVADEGSFTCFVSIRDFGSAAVSLQVAAPYSKPSMTLEPNKDLRPGDTVTITCSSYQGYPEAEVFWQDGQGVPLTGNVTTSQMANEQGLFDVHSILRVVLGANGTYSCLVRNPVLQQDAHSSVTITPQRSPTGAVEVQVPEDPVVALVGTDATLRCSFSPEPGFSLAQLNLIWQLTDTKQLVHSFTEGRDQGSAYANRTALFPDLLAQGNASLRLQRVRVADEGSFTCFVSIRDFGSAAVSLQVAAPYSKPSMTLEPNKDLRPGDTVTITCSSYRGYPEAEVFWQDGQGVPLTGNVTTSQMANEQGLFDVHSVLRVVLGANGTYSCLVRNPVLQQDAHGSVTITGQPMTHHHHHHHHHH

Yes

Yes

Gly27