Vintage Botanical Prints – 76 in a series – v: The Cruciform Tribe from The Natural Order of Plants (1868)
#Cruciaceæ #Cruciaceae #Cruciform #plants #flowers #leaves #botany #botanical #print #art #artwork #garden #gardening #science #painting #illustration
@altbot
@noswald An #AlgebraicCurve is named by the order of the implicit polynomial equations describing them.
\[ \frac{1}{x^2} + \frac{1}{y^2} = 1 \Rightarrow x^2 y^2 - x^2 - y^2 = 0 \]
So it is a #quartic curve of the form 𝑥²𝑦²−𝑏²𝑥²−𝑎²𝑦²=0 which is called a #cruciform curve, cross curve, or sometimes the policeman on point duty curve.
https://mathworld.wolfram.com/Cruciform.html
https://en.wikipedia.org/wiki/Quartic_plane_curve#Cruciform_curve
What is the #molecular basis of #syntheticlethality between loss of Werner #helicase #WRN and #mismatchrepair #MMR proteins particularly in #cancer cells with #microsatellite instability?
Using #biochemcial assays, Petr Cejka and colleages, Bellinzona LRB, show how they synergistically and independently unfold #cruciform #DNA structures, with WRN preventing their cleavage by #SLX1-#SLX4 structure-specific #endonuclease and DNA breakage
Douglas E. Welch
Richard Penner
The EMBO Journal
Matej Lexa