| Post Translational Modifications | Transforming growth factor beta-3 proprotein: The precursor proprotein is cleaved in the Golgi apparatus to form Transforming growth factor beta-3 (TGF-beta-3) and Latency-associated peptide (LAP) chains, which remain non-covalently linked, rendering TGF-beta-3 inactive. Methylated at Gln-293 by N6AMT1. |
| Function | Transforming growth factor beta-3 proprotein: Precursor of the Latency-associated peptide (LAP) and Transforming growth factor beta-3 (TGF-beta-3) chains, which constitute the regulatory and active subunit of TGF-beta-3, respectively. Latency-associated peptide: Required to maintain the Transforming growth factor beta-3 (TGF-beta-3) chain in a latent state during storage in extracellular matrix. Associates non-covalently with TGF-beta-3 and regulates its activation via interaction with 'milieu molecules', such as LTBP1 and LRRC32/GARP, that control activation of TGF-beta-3. Interaction with integrins results in distortion of the Latency-associated peptide chain and subsequent release of the active TGF-beta-3. Transforming growth factor beta-3: Multifunctional protein that regulates embryogenesis and cell differentiation and is required in various processes such as secondary palate development. Activation into mature form follows different steps: following cleavage of the proprotein in the Golgi apparatus, Latency-associated peptide (LAP) and Transforming growth factor beta-3 (TGF-beta-3) chains remain non-covalently linked rendering TGF-beta-3 inactive during storage in extracellular matrix. At the same time, LAP chain interacts with 'milieu molecules', such as LTBP1 and LRRC32/GARP that control activation of TGF-beta-3 and maintain it in a latent state during storage in extracellular milieus. TGF-beta-3 is released from LAP by integrins: integrin-binding results in distortion of the LAP chain and subsequent release of the active TGF-beta-3. Once activated following release of LAP, TGF-beta-3 acts by binding to TGF-beta receptors (TGFBR1 and TGFBR2), which transduce signal. |
| Protein Name | Transforming Growth Factor Beta-3 Proprotein Cleaved Into - Latency-Associated PeptideLap - Transforming Growth Factor Beta-3Tgf-Beta-3 |
| Database Links | Reactome: R-HSA-114608Reactome: R-HSA-2129379Reactome: R-HSA-2173789Reactome: R-HSA-3000178 |
| Cellular Localisation | Latency-Associated Peptide: SecretedExtracellular SpaceExtracellular MatrixTransforming Growth Factor Beta-3: Secreted |
| Alternative Protein Names | Transforming Growth Factor Beta-3 Proprotein Cleaved Into - Latency-Associated Peptide proteinLap - Transforming Growth Factor Beta-3 proteinTgf-Beta-3 proteinTGFB3 protein |
Information sourced from Uniprot.org
