TGF beta 1/TGFB1 LAP 蛋白, Human (249a.a, HEK293)

The Latency-associated peptide (LAP) of Transforming growth factor beta-1 (TGF-beta-1) proprotein is a crucial precursor, forming a complex with TGF-beta-1. LAP maintains the latent state of TGF-beta-1 during extracellular matrix storage, ensuring controlled activation. Interactions with 'milieu molecules' like LTBP1, LRRC32/GARP, and LRRC33/NRROS intricately regulate TGF-beta-1 activation. LRRC33/NRROS influences activation in macrophages and microglia, while LRRC32/GARP controls activation on activated regulatory T-cells. Interactions with integrins induce conformational changes in LAP, releasing active TGF-beta-1. LAP orchestrates controlled TGF-beta-1 activation in diverse physiological contexts. TGF beta 1/TGFB1 LAP Protein, Human (249a.a, HEK293) is the recombinant human-derived TGF beta 1/TGFB1 LAP protein, expressed by HEK293 , with tag free. and C33S mutation. The total length of TGF beta 1/TGFB1 LAP Protein, Human (249a.a, HEK293) is 249 a.a., with molecular weight of 20-45 kDa.

转化生长因子β-1 (TGF-β-1) 前蛋白的潜伏相关肽(LAP) 作为重要的前体，与TGF-β-1 形成复合物，分别构成调节亚基和活性亚基。 LAP 在细胞外基质储存期间维持 TGF-β-1 的潜伏状态方面发挥着关键作用，确保在特定触发条件下受控激活。与关键“环境分子”（如 LTBP1、LRRC32/GARP 和 LRRC33/NRROS）的相互作用复杂地调节 TGF-β-1 的激活。 LRRC33/NRROS 影响巨噬细胞和小胶质细胞中 TGF-β-1 的激活，而 LRRC32/GARP 控制激活的调节性 T 细胞 (Treg) 的激活。此外，与整合素（ITGAV:ITGB6 或 ITGAV:ITGB8）的相互作用会诱导 LAP 的构象变化，导致活性 TGF-β-1 的释放。这种动态相互作用凸显了 LAP 在各种生理环境中协调 TGF-β-1 受控激活中的关键作用。

1.Measured by its ability to inhibit TGF-β1 activity on HT-2 mouse T cells. The ED₅₀ this effect is 22.78 ng/mL in the presence of 1 ng/mL TGF-β1, corresponding to a specific activity is 4.39×10⁴units/mg.
2.Measured by its ability to inhibit the IL-4-dependent proliferation of HT‑2 mouse T cells.The ED₅₀ for this effect is 0.01185 ng/ml, corresponding to a specific activity is 8.43×10⁴ units/mg.

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  Measured by its ability to inhibit TGF-β1 activity on HT‑2 mouse T cells. The ED₅₀ this effect is 22.78 ng/mL in the presence of 1 ng/mL TGF-β1, corresponding to a specific activity is 4.39×10⁴ units/mg.

Human

HEK293

Tag Free

P01137 (L30-R278, C33S)

7040  [NCBI]

LSTSKTIDMELVKRKRIEAIRGQILSKLRLASPPSQGEVPPGPLPEAVLALYNSTRDRVAGESAEPEPEPEADYYAKEVTRVLMVETHNEIYDKFKQSTHSIYMFFNTSELREAVPEPVLLSRAELRLLRLKLKVEQHVELYQKYSNNSWRYLSNRLLAPSDSPEWLSFDVTGVVRQWLSRGGEIEGFRLSAHCSCDSRDNTLQVDINGFTTGRRGDLATIHGMNRPFLLLMATPLERAQHLQSSRHRR

20-45 kDa

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  Greater than 95% as determined by reducing SDS-PAGE.

无菌粉末.

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in PBS, pH 7.4. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.