{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Lee UJ"],"funding":["Dong-A University research fund","National Research Foundation of Korea","Korea government","Korea Forest Service"],"pagination":["e2103503"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8895148"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["9(7)"],"pubmed_abstract":["Tyrosinase-mediated melanin synthesis is an essential biological process that can protect skin from UV radiation and radical species. This work reports on in situ biosynthesis of artificial melanin in native skin using photoactivatable tyrosinase (PaTy). The I41Y mutant of Streptomyces avermitilis tyrosinase (SaTy) shows enzymatic activity comparable to that of wild-type SaTy. This Y41 is replaced with photocleavable o-nitrobenzyl tyrosine (ONBY) using the introduction of amber codon and ONBY-tRNA synthetase/tRNA pairs. The ONBY efficiently blocks the active site and tyrosinase activity is rapidly recovered by the photo-cleavage of ONBY. The activated PaTy successfully oxidizes L-tyrosine and tyramine-conjugated hyaluronic acid (HA_T) to synthesize melanin particles and hydrogel, respectiv"],"journal":["Advanced science (Weinheim, Baden-Wurttemberg, Germany)"],"pubmed_title":["Light-Triggered In Situ Biosynthesis of Artificial Melanin for Skin Protection."],"pmcid":["PMC8895148"],"funding_grant_id":["NRF‐2021R1A2C2008821","NRF-2021R1A2C2008821","2021405B10‐2123‐0101","KMDF_PR_20200901_0151","2021405B10-2123-0101"],"pubmed_authors":["Kim SH","Kim BG","An YH","Lee PG","Flood DT","Yun H","Lee UJ","Hwang NS","Dawson PE","Ko J"],"additional_accession":[]},"is_claimable":false,"name":"Light-Triggered In Situ Biosynthesis of Artificial Melanin for Skin Protection.","description":"Tyrosinase-mediated melanin synthesis is an essential biological process that can protect skin from UV radiation and radical species. This work reports on in situ biosynthesis of artificial melanin in native skin using photoactivatable tyrosinase (PaTy). The I41Y mutant of Streptomyces avermitilis tyrosinase (SaTy) shows enzymatic activity comparable to that of wild-type SaTy. This Y41 is replaced with photocleavable o-nitrobenzyl tyrosine (ONBY) using the introduction of amber codon and ONBY-tRNA synthetase/tRNA pairs. The ONBY efficiently blocks the active site and tyrosinase activity is rapidly recovered by the photo-cleavage of ONBY. The activated PaTy successfully oxidizes L-tyrosine and tyramine-conjugated hyaluronic acid (HA_T) to synthesize melanin particles and hydrogel, respectiv","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Mar","modification":"2025-04-04T08:57:31.098Z","creation":"2025-04-04T08:57:31.098Z"},"accession":"S-EPMC8895148","cross_references":{"pubmed":["34989175"],"doi":["10.1002/advs.202103503"]}}