Table 2.

Rearrangement of Nirenberg's handwritten, previously unpublished, first representation of the codons that integrate the genetic code.

		1	2	3	4
	→	T	C	A	G
1	TT	TTT = F	TTC = F	TTA = L	TTG = L
2	TC	TCT = S	TCC = S	TCA = S	TCG = S
3	TA	TAT = Y	TAC = Y	TAA = *	TAG = *
4	TG	TGT = C	TGC = C	TGA = *	TGG = W
5	CT	CTT - L	CTC - L	CTA - L	CTG = L
6	CC	CCT = P	CCC = P	CCA = P	CCG = P
7	CA	CAT = H	CAC = H	CAA = Q	CAG = Q
8	CG	CGT = R	CGC = R	CGA = R	CGG = R
9	AT	ATT = I	ATC = I	ATA = I	ATG = M
10	AC	ACT = T	ACC = T	ACA = T	ACG = T
11	AA	AAT = N	AAC = N	AAA = K	AAG = K
12	AG	AGT = S	AGC = S	AGA = R	AGG = R
13	GT	GTT = V	GTC = V	GTA = V	GTG = V
14	GC	GCT = A	GCC = A	GCA = A	GCG = A
15	GA	GAT = D	GAC = D	GAA = E	GAG = E
16	GG	GGT = G	GGC = G	GGA = G	GGG = G