sCD100/Semaphorin-4D human
SIGMA/SRP6209 - recombinant, expressed in E. coli, ≥97% (SDS-PAGE)
Synonym: A8; BB18; GR3; Semaphorin-4D
Product Type: Chemical
| assay | ≥97% (SDS-PAGE) |
| biological source | human |
| form | lyophilized powder |
| impurities | <1 EU/μg endotoxin (LAL test) |
| mol wt | 78.9 kDa |
| packaging | pkg of 10 μg |
| pkg of 50 μg | |
| recombinant | expressed in E. coli |
| shipped in | wet ice |
| storage temp. | −20°C |
| UniProt accession no. | Q92854   |
| General description: | The Semaphorins are a large family of phylogenetically conserved proteins that play a pivotal role in maintaining homeostasis in the immune system. Twenty members of this family have been identified and categorized into eight subclasses based on sequence similarity and distinctive structural features. CD100, also known as Sema4D, is a 150 kDa transmembrane class IV semaphorin. Studies have shown that CD100 can induce monocyte migration, T-cell activation, and B-cell survival, as well as T/B cell and T/DC “cooperation”. The CD100 precursor contains 862 amino acids, including a 21 aa. signal sequence, a 713 aa. extracellular domain, a 21 aa transmembrane sequence, and a 107 aa cytoplasmic region. The extracellular sequence contains several structural features, including a 479 aa “sema” domain, a 79 aa. Ig-like sequence, and a 52 aa “Plexin-type repeat”. Recombinant soluble CD100 is a 78.9 kDa protein comprising the extracellular domain of CD100 (711 amino acids). SDS-PAGE analysis run under non-reducing conditions shows a mixture of disulfide linked dimer and monomer. |
| Physical form: | Sterile filtered through a 0.2 micron filter. Lyophilized from 10 mM Sodium Phosphate, pH 7.5. |
| Reconstitution: | Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥97% (SDS-PAGE) |
| Storage Temp. | −20°C |
| UNSPSC | 12352200 |