{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nThe study (PMID:"}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": "does not provide any information regarding the function of DEFA8P. Instead, it focuses on the role of proteasomes—particularly the p27 subunit—in the regulation of melanin biosynthesis in mouse melanoma cells. The work demonstrates that in amelanotic melanoma cells, elevated levels of proteasome subunit p27 correlate with enhanced degradation of tyrosinase (Tyr), resulting in lower Tyr activity and reduced melanin production. Conversely, in melanotic melanoma cells there is lower p27 expression, which is associated with higher Tyr levels and increased melanin synthesis. Moreover, treatment with the proteasome inhibitor MG132 in amelanotic cells led to increased Tyr activity, further supporting the involvement of p27 in modulating melanosome biogenesis.\n"}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Dhanashri Godbole, Manoj Mojamdar, Jayanta K Pal "}, {"type": "b", "children": [{"type": "t", "text": "Increased level of p27 subunit of proteasomes and its co-localization with tyrosinase in amelanotic melanoma cells indicate its direct role in the regulation of melanin biosynthesis."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Cell Biol Int (2006)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.cellbi.2006.06.009"}], "href": "https://doi.org/10.1016/j.cellbi.2006.06.009"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "16879986"}], "href": "https://pubmed.ncbi.nlm.nih.gov/16879986"}]}]}]}