reca protein binds to duplex dna in the presence of mg2+ and adenosine 5'-o- ( 3-thiotriphosphate ) forming a stiff nucleoprotein filament with a distinct axial repeat which contains 17 +/- 1 base pairs and spans 8-9 nm along the fiber ( di capua , e. , engel , a. , stasiak , a. , and koller , th . ( 1982 ) j. mol . biol . 157 , 87-103 ; dunn , k. , chrysogelos , s. , and griffith , j . ( 1982 ) cell 28 , 757-765 ) .
C0010851
filament
C0007634
cell