TABLE 4.

Pseudogenes and E. coli K-12 genes not present in 2457T, categorized by function

Functional category	No. of pseudogenes
	Disrupted/truncated	Missing	Total
Biosynthesis	13	2	15
Degradation	13	30	43
Metabolism	29	29	58
Cell structure	36	27	63
Transport	53	71	124
Cell processes	9	15	24
Regulatory	26	36	62
Factor	10	18	28
Putative enzymes	50	77	127
Hypothetical	132	203	335