Table 1.

Filament polymorphism of fusion proteins compared to Ure2p

Protein	Type*	Diameter,† nm	Repeat length, nm	Frequency,¶ %
Ure21–65-barnase	B	26  ± 2	180 ± 20	100
Ure21–80-GFP	A	19  ± 2	50–200‡	88
	B	32  ± 2	60–200‡	12
Ure21–65-CA	A	18  ± 2	40–60‡	87
	B	38  ± 2	40–300‡	13
Ure21–65-GST	A	24  ± 5	Not detected	100
Ure2p	—	30  ± 5	55 ± 10§	—

^*Type description: A = apparent single filament; B = bundle of tightly associated type A filaments. 

^† Errors given are one standard deviation based on at least 20 measurements. 

^‡ For some of the filaments no repeat was detected. 

^§ Rare event: for most filaments no repeat could be detected. 

^¶ Frequencies can vary substantially between different preparations. The values given here are averages for all preparations done. In each case more than 100 filaments were counted.