Abbreviation
Recombinant Human IL12B&IL12A Heterodimer protein (Active)
Purity
>97% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Measured in a cell proliferation assay using PHA-stimulated human T lymphoblasts. The ED50 for this effect is 0.01-0.05 ng/mL. The specific activity of rHuIL-12 is approximately 1.1 × 104 units/μg, which is calibrated against rHuIL-12 WHO Standard
Alternative Names
CLMF; CLMF p35; CLMF p40; CLMF1; CLMF2; Cytotoxic lymphocyte maturation factor 1, p35; Cytotoxic lymphocyte maturation factor 2; Cytotoxic lymphocyte maturation factor 35 kDa subunit; Cytotoxic lymphocyte maturation factor 40 kDa subunit; IL 12A; IL 2 subunit p40; IL-12 subunit p35; IL-12A; IL-12B; IL12; IL12, p35 subunit; IL12, subunit p40; IL12A; IL12A_HUMAN; IL12B; IL35 subunit; Interleukin 12 alpha chain; Interleukin 12 beta chain; Interleukin 12 subunit beta; Interleukin 12, p40; Interleukin 12A (natural killer cell stimulatory factor 1, cytotoxic lymphocyte maturation factor 1, p35); Interleukin 12B (natural killer cell stimulatory factor 2, cytotoxic lymphocyte maturation factor 2, p40); Interleukin 12B; Interleukin-12 subunit alpha; Natural killer cell stimulatory factor 1, 35 kD subunit; natural killer cell stimulatory factor 2; Natural killer cell stimulatory factor, 40 kD subunit; NF cell stimulatory factor chain 1; NFSK; NK cell stimulatory factor chain 1; NK cell stimulatory factor chain 2; NKSF; NKSF1; NKSF2; P35
Species
Homo sapiens (Human)
Expression Region
23-328aa(IL12B) & 23-219aa(IL12A)
Target Protein Sequence
p35 Subunit: RNLPVATPDP GMFPCLHHSQ NLLRAVSNML QKARQTLEFY PCTSEEIDHE DITKDKTSTV EACLPLELTK NESCLNSRET SFITNGSCLA SRKTSFMMAL CLSSIYEDLK MYQVEFKTMN AKLLMDPKRQ IFLDQNMLAV IDELMQALNF NSETVPQKSS LEEPDFYKTK IKLCILLHAF RIRAVTIDRV MSYLNAS p40 Subunit: IWELKKDVYV VELDWYPDAP GEMVVLTCDT PEEDGITWTL DQSSEVLGSG KTLTIQVKEF GDAGQYTCHK GGEVLSHSLL LLHKKEDGIW STDILKDQKE PKNKTFLRCE AKNYSGRFTC WWLTTISTDL TFSVKSSRGS SDPQGVTCGA ATLSAERVRG DNKEYEYSVE CQEDSACPAA EESLPIEVMV DAVHKLKYEN YTSSFFIRDI IKPDPPKNLQ LKPLKNSRQV EVSWEYPDTW STPHSYFSLT FCVQVQGKSK REKKDRVFTD KTSATVICRK NASISVRAQD RYYSSSWSEW ASVPCS
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Protein Length
Heterodimer
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Buffer
0.2 μm filtered PBS, pH 7.4 ,lyophilized
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
IL-12 drives Th1 polarization and NK cell activation through JAK2/TYK2-STAT4 signaling, making it a critical tool for dissecting innate-to-adaptive immune transitions. This tag-free human IL-12 heterodimer (IL12B aa 23–328 and IL12A aa 23–219) demonstrates exceptional potency with an ED50 of 0.01–0.05 ng/mL in PHA-stimulated human T lymphoblast proliferation assays, corresponding to a specific activity of approximately 1.1 × 10⁴ units/μg. The endotoxin level below 1.0 EU/μg satisfies the stringent criteria required to prevent LPS-driven artifacts in sensitive immune cell functional assays, including PBMC proliferation, Th1 differentiation studies, JAK/STAT pathway activation experiments, and in vivo tumor immunology models. Purity exceeding 95% by SDS-PAGE, combined with faithful representation of the mature heterodimer sequence, provides a suitable basis for use as a reference standard in cytokine detection assays or as a positive control in antibody validation workflows.
