TABLE 3.

Conservation between proposed Chp2 VP3-coat protein interactions and internal scaffolding-coat protein interactions in the atomic structure of the φX174 procapsid^a

φX174 procapsid interactions		Chp2 proposed interactions
		VP3	Coat	Nature of internal scaffolding coat interaction
D98	R274	D92	R395	Charge-charge
E105	R274	D98	R395	Charge-charge
D111	R239	E103 or E104	R339	Charge-charge
E113	K166	—b	—b
E113	R239	E107 or E108	R339	Charge-charge
F120	F67	F114 or Y116	F85 or F86	Aromatic
F120	Y134	F114 or Y116	Y160	Aromatic
F120	F135	F114 or Y116	Y160	Aromatic

^aThe atomic structure of the φX174 procapsid can be found in references 6 and 7. Proposed interactions were determined by sequence alignments between the φX174 and Chp2 proteins. 

^bNo equivalent interaction in CHP2.