Tyrosinase (TYR), partial, human, recombinant

Organism: Homo sapiens (Human). Source: Yeast. Expression Region: 19-377aa. Protein Length: Partial. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: HFPRACVSSK NLMEKECCPP WSGDRSPCGQ LSGRGSCQNI LLSNAPLGPQ FPFTGVDDRE SWPSVFYNRT CQCSGNFMGF NCGNCKFGFW GPNCTERRLL VRRNIFDLSA PEKDKFFAYL TLAKHTISSD YVIPIGTYGQ MKNGSTPMFN DINIYDLFVW MHYYVSMDAL LGGSEIWRDI DFAHEAPAFL PWHRLFLLRW EQEIQKLTGD ENFTIPYWDW RDAEKCDICT DEYMGGQHPT NPNLLSPASF FSSWQIVCSR LEEYNSHQSL CNGTPEGPLR RNPGNHDKSR TPRLPSSADV EFCLSLTQYE SGSMDKAANF SFRNTLEGFA SPLTGIADAS QSSMHNALHI YMNGTMSQV. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: 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. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: This is a copper-containing oxidase that functions in the formation of pigments such as melanins and other polyphenolic compounds. Catalyzes the rate-limiting conversions of tyrosine to DOPA, DOPA to DOPA-quinone and possibly 5,6-dihydroxyindole to indole-5,6 quinone. Reference: Detection of 53 novel DNA variations within the tyrosinase gene and accumulation of mutations in 17 patients with albinism.Opitz S., Kaesmann-Kellner B., Kaufmann M., Schwinger E., Zuehlke C.Hum. Mutat. 23:630-631(2004). Function: This is a copper-containing oxidase that functions in the formation of pigments such as melanins and other polyphenolic compounds. Catalyzes the initial and rate limiting step in the cascade of reactions leading to melanin production from tyrosine. In addition to hydroxylating tyrosine to DOPA (3,4-dihydroxyphenylalanine), also catalyzes the oxidation of DOPA to DOPA-quinone, and possibly the oxidation of DHI (5,6-dihydroxyindole) to indole-5,6 quinone.