The Secondary Structure Editor "ERNA-2D"

Deutsche Version:

The Secondary Structure Editor ERNA-2D:

ERNA-2D is a very powerful Secondary Structure Editor which has been inte-

grated into ERNA-3D relatively recently. ERNA-2D can be understood as a

program within the program and communicates with the 3D-functions of

ERNA-3D in a very intelligent manner. With ERNA-2D it is now possible

to generate Secondary Structure Maps of molecules in a flexible manner never

seen before. Analogous to ERNA-3D, all single strands are also flexible and

can be chain translated in an absolutely dynamic way. Double helices and

other structure parts can be moved around while all connected flexible strands

follow the movement. Moreover the most important feature of ERNA-2D is its

ability to create three-dimensional atomic structures within seconds directly

out of the edited Secondary Structure and to communicate with ERNA-3D via

interactive selections done by the user.

A further very useful feature of ERNA-2D is its ability to create Secondary

Structures directly from a three-dimensional atomic structure. Accordingly, if

a 3D structure is extracted from a data bank (e.g. PDB), its Secondary

Structure can also be easily generated.

ERNA-2D: Figure1

Fig. 1: The complete 16S rRNA of the E.coli ribosome edited by ERNA-2D.

Fig. 2: ERNA-2D allows the absolute flexible manipulation of Secondary
                 Structure Parts by using the so-called "Selbox" which can be drawn
              arround any part.

  Please watch the recorded Live Movies demonstrating the extraordinary

interactive features of ERNA-2D.