Dioxygenase that catalyzes the first step of DNA base J (beta-d-glucosyl-HOMedU) biosynthesis by converting thymine to 5-hydroxymethyluracil (HOMedU). DNA base J is a hypermodified thymidine residue found in the genome of kinetoplastid parasites, which is localized primarily to repetitive DNA, namely the telomeres, and is implicated in the regulation of antigenic variation. Also specifically binds to base J-containing DNA (J-DNA). Involved in propagation and maintenance of DNA base J synthesis initiated by JBP2 by specifically binding already synthesized DNA base J and propagating J synthesis. Thymine dioxygenase activity and J-DNA-binding are independent functions. Source: Recombinant protein corresponding to aa200-600 from Leishmania infantum Thymine dioxygenase JBP1, fused to 10X His-V5-Tag at N-terminal, expressed in E.coli. Molecular Weight: ~53.4kD Amino Acid Sequence: SCIACLDGQFKGLALAFDDFGINVLMQPRDVMIFDSHHFHSNTEVELSFSGEDWKRLTCVFYYRAALGEPASYAEYRRRLEKSKQDTSFTPVVSNVRVKENGTNLNRPSPVYPIFLSPFWVPMVAHCLQHCASEAQCVHDAMTADGSRLAEVMFGEPLSTSDGIPLRGEEEKLKANSDSASRPLSRLGGFSETNLMVSTAVEKKKYLNSEFLSHFISAQLLDMWKQARGKWLELVGREWTHMLALNPERKDFLWRNQSEMNSAFFDLCEVGKQVMLGLLGKEAALPKEEQAFWTMYAVHLNAACAEELNMPHVAMSLRKLNVKLKDFNFGGTRYFKDMPPEEQKRRMERKQRIEEARRHGMSSGAHEKRANWLTNDSFDYQTEDCVFDYAQHKWVPPALHA Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Supplied as a lyophilized powder from 20mM Tris-HCl, 0.5M sodium chloride, pH 8.0, 6% trehalose. Reconstitute with sterile ddH2O to a concentration of 0.1-1mg/ml.
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