The two-dimensional model of its structure was proposed by Robert Holley.  
The two-dimensional model of its structure was proposed by Robert Holley.  All types contain the sequence "p-Cp-Cp-A" at one end and "pG" at the other. There are believed to be 32 different types, with 20 associated enzymes known as aminoacyl synthetases. The cloverleaf model also posits the location of the D-loop, anticodon end, and the amino acid binding site in, for ten points, what type of RNA?
The two-dimensional model of its structure was proposed by Robert Holley.  
Transfer RNA (prompt on RNA)