Nobel Prize in Chemistry laureate Aziz Sancar has said he has found a mistake on the reverse of Turkey's 5 lira banknote, which shows a left-handed Z-DNA helix.

Speaking during a visit to schools in Istanbul's Üsküdar district on May 21, Sancar said the left-handed Z-DNA helix on the reverse of the banknote mistakenly wound from left to right.

He added that he informed the Central Bank about the mistake five years ago but there had been no change yet.

Issued on Jan 1, 2009, the left side on the reverse of the 5 lira banknote features a portrait of Turkish scientist Adnan Sayýlý along with pictures of the left-handed Z-DNA helix, atomic symbols, the solar system, and hand figures.

Sancar, who currently works at the University of North Carolina, was among three scientists awarded the Nobel Prize in Chemistry in 2015 for their work on DNA repair. He won the prize along with Tomas Lindahl and Paul Modrich for their work in mapping cells that repair ultraviolet damage to DNA.

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