RecA is not the only protein that can promote branch migration. One example is called RuvAB. RuvAB:
A. can promote branch migration but the process is very slow.
B. contains two donut-shaped RuvA hexamers, related in structure to DnaB helicase, that have nuclease activity.
C. cleaves the Holliday intermediate by replacing one RuvA with RuvC.
D. can reload DnaB helicase to reprime DNA replication after repair.
E. does not require ATP hydrolysis.
C
You might also like to view...
If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun), how would that change Earth's climate?
A) The equators would not change in climate. B) The South Pole would get colder. C) The equators would get warmer. D) The North Pole would get more wind.
If we are only able to observe a population’s phenotypes, which frequencies of genotypes can we know?
a. both homozygous dominant and recessive b. only homozygous dominant c. only homozygous recessive d. both homozygous and heterozygous
How do genetic mosaics help determine the focus of action of a gene?
A) Mosaics are composed of cells with different genotypes, so the phenotype of the cells that lack a gene product can be compared to that of neighboring cells that have the gene product. B) Mosaics are created by mating flies that are homozygous recessive for two different genes and the morphology of the double mutant progeny is studied. C) Mosaics are created by mating two flies that carry homozygous gain-of-function mutations in different genes and the effects of the mutations on the morphology studied. D) Mosaics are created by the Cre-loxP system which allows for the deletion of specific genes at controlled stages of development.
The enzyme lysozyme is critical for which of the stages of a bacteriophage T4 infection cycle?
A) entry B) assembly C) entry and release D) synthesis E) attachment