Aliases for PRIM1 Gene
External Ids for PRIM1 Gene
Previous GeneCards Identifiers for PRIM1 Gene
The replication of DNA in eukaryotic cells is carried out by a complex chromosomal replication apparatus, in which DNA polymerase alpha and primase are two key enzymatic components. Primase, which is a heterodimer of a small subunit and a large subunit, synthesizes small RNA primers for the Okazaki fragments made during discontinuous DNA replication. The protein encoded by this gene is the small, 49 kDa primase subunit. [provided by RefSeq, Jul 2008]
GeneCards Summary for PRIM1 Gene
PRIM1 (DNA Primase Subunit 1) is a Protein Coding gene. Diseases associated with PRIM1 include Seckel Syndrome and Telangiectatic Osteogenic Sarcoma. Among its related pathways are Cell Cycle, Mitotic and Telomere C-strand (Lagging Strand) Synthesis. Gene Ontology (GO) annotations related to this gene include DNA primase activity. An important paralog of this gene is ENSG00000285625.
UniProtKB/Swiss-Prot Summary for PRIM1 Gene
Catalytic subunit of the DNA primase complex and component of the DNA polymerase alpha complex (also known as the alpha DNA polymerase-primase complex) which play an essential role in the initiation of DNA synthesis (PubMed:9268648, PubMed:9705292, PubMed:17893144). During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1, an accessory subunit POLA2 and two primase subunits, the catalytic subunit PRIM1 and the regulatory subunit PRIM2) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1 (By similarity). The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands (PubMed:17893144). These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively (By similarity). In the primase complex, both subunits are necessary for the initial di-nucleotide formation, but the extension of the primer depends only on the catalytic subunit (PubMed:17893144). Can add both ribo- and deoxynucleotides during elongation of the primers (By similarity). Binds single stranded DNA (By similarity).