Fusion between Sendai virus envelopes and biological membranes as monitored by energy transfer methods.
Chlorophyll a and chlorophyll b have been inserted into reconstituted envelopes of Sendai virus particles. Fluorescence measurements indicated a high efficiency of energy transfer between the two chlorophyll molecules due to their close proximity in the viral envelope. Fusion of reconstituted, pigmented virus envelopes with various biological cell membranes at 37 degrees C resulted in a significant decrease in the yield of energy transfer. Reduction in the efficiency of energy transfer was temperature and time dependent, and was also dependent upon the ratio between the reconstituted Sendai virus envelopes (donor) and recipient cells (acceptor). No reduction in the efficiency of energy transfer was observed when non-fusogenic, reconstituted viral envelopes were incubated with cell membranes.
D000818:Animals; D002286:Carcinoma, Ehrlich Tumor / Q000382:microbiology; D002462:Cell Membrane / Q000382:microbiology*; D002734:Chlorophyll; D000077194:Chlorophyll A; D004735:Energy Transfer; D004910:Erythrocyte Membrane / Q000382:microbiology; D006801:Humans; D008561:Membrane Fusion; D051379:Mice; D010222:Parainfluenza Virus 1, Human / Q000502:physiology*; D051381:Rats; D013050:Spectrometry, Fluorescence; D013570:Synaptic Membranes / Q000382:microbiology
D002734:Chlorophyll; C037184:chlorophyll b; D000077194:Chlorophyll A