Table 1. List of 28 composition-homogeneous and 24 composition-heterogeneous ribosomal proteins.

Composition-homogeneous		Composition-heterogeneous
COG	Protein	COG	Protein
COG0522	Ribosomal protein S4	COG0261	Ribosomal protein L21
COG0096	Ribosomal protein S8	COG0203	Ribosomal protein L17
COG0100	Ribosomal protein S11	COG0359	Ribosomal protein L9
COG0238	Ribosomal protein S18	COG0200	Ribosomal protein L15
COG0199	Ribosomal protein S14	COG0098	Ribosomal protein S5
COG0093	Ribosomal protein L14	COG0256	Ribosomal protein L18
COG0186	Ribosomal protein S17	COG0097	Ribosomal protein L6P/L9E
COG0197	Ribosomal protein L16/L10E	COG0094	Ribosomal protein L5
COG0091	Ribosomal protein L22	COG0092	Ribosomal protein S3
COG0185	Ribosomal protein S19	COG0089	Ribosomal protein L23
COG0090	Ribosomal protein L2	COG0088	Ribosomal protein L4
COG0051	Ribosomal protein S10	COG0049	Ribosomal protein S7
COG0222	Ribosomal protein L7/L12	COG0081	Ribosomal protein L1
COG0080	Ribosomal protein L11	COG0539	Ribosomal protein S1
COG0211	Ribosomal protein L27	COG0268	Ribosomal protein S20
COG0099	Ribosomal protein S13	COG0103	Ribosomal protein S9
COG0102	Ribosomal protein L13	COG0360	Ribosomal protein S6
COG0184	Ribosomal protein S15P/S13E	COG0087	Ribosomal protein L3
COG0048	Ribosomal protein S12	COG0244	Ribosomal protein L10
COG1278	Cold shock proteins	COG0198	Ribosomal protein L24
COG0050	GTPases—translation elongation factors	COG0227	Ribosomal protein L28
COG0361	Translation initiation factor 1	COG0335	Ribosomal protein L19
COG1158	Transcription termination factor	COG1825	Ribosomal protein L25
COG0055	F0F1-type ATP synthase, beta subunit	COG0228	Ribosomal protein S16
COG3118	Thioredoxin domain-containing protein
COG0740	ATP-dependent Clp proteases
COG0468	RecA/RadA recombinase
COG0443	Molecular chaperone

The COG (Cluster of Orthologous Groups) annotations of these protein families are provided.