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DNA polymerase I (or Pol I) is an enzyme that participates in the process of prokaryotic DNA replication. Discovered by Arthur Kornberg in 1956, [1] it was the first known DNA polymerase (and the first known of any kind of polymerase). It was initially characterized in E. coli and is ubiquitous in prokaryotes.
A DNA polymerase is a member of a family of enzymes that catalyze the synthesis of DNA molecules from nucleoside triphosphates, the molecular precursors of DNA. These enzymes are essential for DNA replication and usually work in groups to create two identical DNA duplexes from a single original DNA duplex.
The polymerase is a monomeric protein with two distinct functional domains. Site-directed mutagenesis experiments support the proposition that this protein displays a structural and functional similarity to the Klenow fragment of the Escherichia coli Polymerase I enzyme; [3] it comprises a C-terminal polymerase domain and a spatially separated N-terminal domain with a 3'-5' exonuclease activity.
20019 Ensembl ENSG00000068654 ENSMUSG00000049553 UniProt O95602 O35134 RefSeq (mRNA) NM_015425 NM_009088 RefSeq (protein) NP_056240 NP_033114 Location (UCSC) Chr 2: 86.02 – 86.11 Mb Chr 6: 71.89 – 71.96 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse DNA-directed RNA polymerase I subunit RPA1 is an enzyme that in humans is encoded by the POLR1A gene. References ^ a b c GRCh38 ...
DNA polymerase iota is an enzyme that in humans is encoded by the POLI gene. [4] It is found in higher eukaryotes, and is believed to have arisen from a gene duplication from Pol η. Pol ι, is a Y family polymerase that is involved in translesion synthesis. It can bypass 6-4 pyrimidine adducts and abasic sites and has a high frequency of wrong ...
18968 Ensembl ENSG00000101868 ENSMUSG00000006678 UniProt P09884 P33609 RefSeq (mRNA) NM_016937 NM_001330360 NM_001378303 NM_008892 RefSeq (protein) NP_001317289 NP_058633 NP_001365232 NP_032918 Location (UCSC) Chr X: 24.69 – 25 Mb Chr X: 92.35 – 92.68 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse DNA polymerase alpha catalytic subunit is an enzyme that in humans is encoded by ...
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Then, the index 1 primer attaches, polymerizes the index 1 sequence, and is washed away. The strand forms a bridge again, and the 3' end of the DNA strand attaches to an oligo on the flow cell. The index 2 primer attaches, polymerizes the sequence, and is washed away. A polymerase sequences the complementary strand on top of the arched strand.