Primase and polymerase α tango to make an RNA-DNA hybrid primer.
FEBS J
; 291(9): 1889-1891, 2024 May.
Article
in En
| MEDLINE
| ID: mdl-38581152
ABSTRACT
Several recent cryo-electron microscopy (cryo-EM) studies about the eukaryotic primosome, including the human primosome described by Yin et al. in this issue, have uncovered the structural intricacies between the RNA primase and the DNA polymerase. These studies show that these two partners tango on DNA to synthesize a hybrid primer composed of ~ 10 nucleotide (nt) RNA and ~ 10-nt DNA. They reveal key intermediate steps involved in this process; from the self-inhibited apo state to the initiation of RNA primer synthesis, RNA primer handover to the polymerase, primer elongation by polymerase, and finally, primer termination and release. Remarkably, the polymerase domain orchestrates all major steps during primer synthesis.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
DNA
/
RNA
/
DNA Polymerase I
Limits:
Humans
Language:
En
Journal:
FEBS J
Journal subject:
BIOQUIMICA
Year:
2024
Document type:
Article
Affiliation country:
Estados Unidos
Country of publication:
Reino Unido