Co-lead author Dr. Zoë Waller (UCL School of Pharmacy) said: "DNA is our genetic material, and its structure usually looks a bit like a twisted ladder called a double helix.

Co-lead author Dr Zoë Waller (UCL School of Pharmacy) said: "DNA is our genetic material, and its structure usually looks a bit like a twisted ladder called a double helix.

Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such structure, the G-quadruplex (G4), looks like a knot. These knots can ...

Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such structure, the G-quadruplex (G4), looks like a knot.

Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such structure, the G-quadruplex (G4), looks like a knot.

Co-lead author Dr Zoë Waller (UCL School of Pharmacy) said: “DNA is our genetic material, and its structure usually looks a bit like a twisted ladder called a double helix.