Spinal foraminal stenosis is the narrowing of the typical neuroforaminal spaces between the vertebrae. The spinal nerve roots exit through these same openings and when the stenotic change is severe, these neurological structures might suffer compression and subsequent dysfunction.erniated discs can bulge into the foraminal opening, compressing the nerve root against the wall of the neuroforamen. This is sometimes called nerve compression, nerve impingement or nerve constriction.
Quick Answer. The enzyme DNA helicase unzips the DNA double helix to allow it to replicate. DNA helicase has a rotation speed of 10,000 rotations per minute and moves ahead of the replication fork. It continuously unwinds the DNA strands to allow DNA polymerase to attached new nucleotide strands.
DNA ligase is an enzyme which seals gaps in the sugar-phosphate backbone of DNA molecules. This is necessary in the replication of DNA as the lagging strand is synthesised i â¦ n short fragments by DNA polymerase. The gaps between the fragments are then sealed by DNA ligase.