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19075 Ensembl ENSG00000198056 ENSMUSG00000025395 UniProt P49642 P20664 RefSeq (mRNA) NM_000946 NM_008921 RefSeq (protein) NP_000937 NP_032947 Location (UCSC) Chr 12: 56.73 – 56.75 Mb Chr 10: 127.85 – 127.87 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse DNA primase small subunit is an enzyme that in humans is encoded by the PRIM1 gene. The replication of DNA in eukaryotic cells ...
The E. Coli DnaG primase is a 581 residue monomeric protein with three functional domains, according to proteolysis studies. There is an N-terminal Zinc-binding domain (residues 1–110) where a zinc ion is tetrahedrally coordinated between one histidine and three cysteine residues, which plays a role in recognizing sequence specific DNA binding sites.
It has an AEP superfamily polymerase/primase domain, a 3'-phosphoesterase domain, and a ligase domain. It is also capable of primase, DNA and RNA polymerase, and terminal transferase activity. DNA polymerization activity can produce chains over 7000 nucleotides (7 kb) in length, while RNA polymerization produces chains up to 1 kb long. [21]
19076 Ensembl ENSG00000146143 ENSMUSG00000026134 UniProt P49643 P33610 RefSeq (mRNA) NM_000947 NM_001282487 NM_001282488 NM_008922 RefSeq (protein) NP_000938 NP_001269416 NP_001269417 NP_032948 Location (UCSC) Chr 6: 57.31 – 57.65 Mb Chr 1: 33.49 – 33.71 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse DNA primase large subunit is an enzyme that in humans is encoded by the PRIM2 ...
DNA polymerase alpha also known as Pol α is an enzyme complex found in eukaryotes that is involved in initiation of DNA replication. The DNA polymerase alpha complex consists of 4 subunits: POLA1, POLA2, PRIM1, and PRIM2. [2] Pol α has limited processivity and lacks 3′ exonuclease activity for proofreading errors.
The DNA model shown (far right) is a space-filling, or CPK, model of the DNA double helix. Animated molecular models, such as the wire, or skeletal, type shown at the top of this article, allow one to visually explore the three-dimensional (3D) structure of DNA. Another type of DNA model is the space-filling, or CPK, model.
DNA polymerase III synthesizes base pairs at a rate of around 1000 nucleotides per second. [3] DNA Pol III activity begins after strand separation at the origin of replication. Because DNA synthesis cannot start de novo, an RNA primer, complementary to part of the single-stranded DNA, is synthesized by primase (an RNA polymerase): [citation ...
[5] [6] [7] PrimPol is a eukaryotic protein with both DNA polymerase and DNA Primase activities involved in translesion DNA synthesis. It is the first eukaryotic protein to be identified with priming activity using deoxyribonucleotides. [6] [7] It is also the first protein identified in the mitochondria to have translesion DNA synthesis activities.