The basic alphabet that describes symbols used in RNA sequences. This alphabet allows not only for the four base nucleotide symbols, but also for various ambiguities, termination, and gap symbols.

The symbol representations come from the NCBI4na standard and are used in many sequence file formats. The NCBI4na standard is the same as the IUPACna standard with only the addition of the gap symbol.

The entries in this dictionary are: Symbol - Name A - Adenine C - Cytosine M - A or C G - Guanine R - G or A S - G or C V - G or V or A U - Uracil W - A or U Y - U or C H - A or C or U K - G or U D - G or A or U B - G or U or C - - Gap N - A or G or U or C.

public class RnaAlphabet : IAlphabet, 
	IEnumerable<byte>, IEnumerable

Public Class RnaAlphabet
	Implements IAlphabet, IEnumerable(Of Byte), 
	IEnumerable

public ref class RnaAlphabet : IAlphabet, 
	IEnumerable<unsigned char>, IEnumerable

type RnaAlphabet =  
    class
        interface IAlphabet
        interface IEnumerable<byte>
        interface IEnumerable
    end