TABLE 3.

Properties of predicted gene products in the R. meliloti phn gene cluster

Gene	Shine-Dalgarno sequencea	Predicted size of product		Closest homolog of predicted product	Properties
		Amino acids	Molecular mass (kDa)
phnG	GGAG (4)	155	16.6	E. coli PhnG protein; 37% identity and 77% similarity over 148-aab overlap
phnH	GGAGAGGA (3)	199	21.2	E. coli PhnH protein; 37% identity and 73% similarity in 188-aa overlap
phnI	GGAG (7)	367	40.8	E. coli PhnI protein; 57% identity and 88% similarity in 354-aa overlap	Contains a sequence with similarity to lipoxygenase pattern 2 sequence
phnJ	AGGAG (7)	297	33.4	E. coli PhnJ protein; 68% identity and 97% similarity in 275-aa overlap	Has four conserved cysteines, a potential metal-binding site
phnK	AGGAGG (7)	258	28.6	E. coli PhnK protein; 68% identity and 90% similarity in 253-aa overlap	HisP-like nucleotide-binding protein

^aNumbers in parentheses indicate nucleotide spacing from the putative Shine-Dalgarno sequence to the initiating methionine. 

^baa, amino acid.