TABLE 1.

Degree of amino acid homology between the putative proteins of the E. coli K10 capsule cluster and their homologues in E. coli K5, H. influenzae, and N. meningitidis

E. coli K10 protein	Functiona	Homologue and homology (% identity)
		E. coli K5	H. influenzae	N. meningitidis
KpsD	Periplasmic protein	KpsD, 34.6
KpsM	ABC-transporter (membrane component)	KpsM, 39.7	BexB, 28.2	CtrC, 27.5
KpsT	ABC transporter (ATP-binding component)	KpsT, 45.7	BexA, 46.5	CtrD, 45.8
KpsE	Polysaccharide export protein	KpsE, 30.0
KpsC	Polysaccharide modification protein	KpsC, 34.3		LipA, 39.9b
KpsS	Polysaccharide modification protein	KpsS, 87.2		LipB, 38.5

^aABC, ATP-binding cassette. 

^bLipA is homologous to amino acids 197 to 593 of KpsC_K10.