Fluorescence energy transfer between nucleotide binding sites in an F-actin filament.
Fluorescence energy transfer between nucleotide binding sites in an F-actin filament was measured using 1-N6-ethenoadenosine diphosphate (epsilon-ADP) as a fluorescent donor and 2'(or 3')-O-(2,4,6-trinitrophenyl)adenosine 5'-diphosphate (TNP-ADP) as an acceptor, both of which were bound to F-actin. Taking into consideration the helical structure of the F-actin filament, the radial coordinate of the nucleotide binding site was calculated to be 25 A, which corresponds to a distance between these sites along the long-pitch helix of 56.3 A and along the genetic helix of 56.7 A.
M
M
Miki
B D
BD
Hambly
C G
CG
dos Remedios
D000199:Actins / Q000378:metabolism*; D000244:Adenosine Diphosphate / Q000031:analogs & derivatives / Q000378:metabolism; D000818:Animals; D001665:Binding Sites; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004735:Energy Transfer; D005456:Fluorescent Dyes; D009711:Nucleotides / Q000378:metabolism*; D011817:Rabbits; D013050:Spectrometry, Fluorescence
D000199:Actins; D005456:Fluorescent Dyes; D009711:Nucleotides; C015195:1,N(6)-ethenoadenosine diphosphate; D000244:Adenosine Diphosphate; C036745:2',3'-(O-(2,4,6-trinitrocyclohexadienylidine))adenosine 5'-diphosphate