DNA primase large subunit is the regulatory subunit of the DNA primase complex and a component of the DNA polymerase alpha complex (called the alpha DNA polymerase-primase complex) which plays an essential role in the initiation of DNA synthesis
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for ...
1-327
3.63e-172
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for DNA replication. Primases are grouped into two classes, bacteria/bacteriophage and archaeal/eukaryotic. The proteins in the two classes differ in structure and the replication apparatus components. Archaeal/eukaryotic core primase is a heterodimeric enzyme consisting of a small catalytic subunit (PriS) and a large subunit (PriL). In eukaryotic organisms, a heterotetrameric enzyme formed by DNA polymerase alpha, the B subunit and two primase subunits has primase activity. Although the catalytic activity resides within PriS, the PriL subunit is essential for primase function as disruption of the PriL gene in yeast is lethal. PriL is composed of two structural domains. Several functions have been proposed for PriL such as stabilization of the PriS, involvement in synthesis initiation, improvement of primase processivity, determination of product size and transfer of the products to DNA polymerase alpha.
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Pssm-ID: 143474 [Multi-domain] Cd Length: 390 Bit Score: 485.23 E-value: 3.63e-172
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for ...
1-327
3.63e-172
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for DNA replication. Primases are grouped into two classes, bacteria/bacteriophage and archaeal/eukaryotic. The proteins in the two classes differ in structure and the replication apparatus components. Archaeal/eukaryotic core primase is a heterodimeric enzyme consisting of a small catalytic subunit (PriS) and a large subunit (PriL). In eukaryotic organisms, a heterotetrameric enzyme formed by DNA polymerase alpha, the B subunit and two primase subunits has primase activity. Although the catalytic activity resides within PriS, the PriL subunit is essential for primase function as disruption of the PriL gene in yeast is lethal. PriL is composed of two structural domains. Several functions have been proposed for PriL such as stabilization of the PriS, involvement in synthesis initiation, improvement of primase processivity, determination of product size and transfer of the products to DNA polymerase alpha.
Pssm-ID: 143474 [Multi-domain] Cd Length: 390 Bit Score: 485.23 E-value: 3.63e-172
Eukaryotic and archaeal DNA primase, large subunit; DNA primase is the polymerase that ...
60-324
2.17e-90
Eukaryotic and archaeal DNA primase, large subunit; DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments made during discontinuous DNA replication. DNA primase is a heterodimer of two subunits, the small subunit Pri1 (48 kDa in yeast), and the large subunit Pri2 (58 kDa in the yeast S. cerevisiae). The large subunit of DNA primase forms interactions with the small subunit and the structure implicates that it is not directly involved in catalysis, but plays roles in correctly positioning the primase/DNA complex, and in the transfer of RNA to DNA polymerase.
Pssm-ID: 397980 Cd Length: 222 Bit Score: 271.24 E-value: 2.17e-90
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for ...
1-327
3.63e-172
Eukaryotic core primase: Large subunit, PriL; Primases synthesize the RNA primers required for DNA replication. Primases are grouped into two classes, bacteria/bacteriophage and archaeal/eukaryotic. The proteins in the two classes differ in structure and the replication apparatus components. Archaeal/eukaryotic core primase is a heterodimeric enzyme consisting of a small catalytic subunit (PriS) and a large subunit (PriL). In eukaryotic organisms, a heterotetrameric enzyme formed by DNA polymerase alpha, the B subunit and two primase subunits has primase activity. Although the catalytic activity resides within PriS, the PriL subunit is essential for primase function as disruption of the PriL gene in yeast is lethal. PriL is composed of two structural domains. Several functions have been proposed for PriL such as stabilization of the PriS, involvement in synthesis initiation, improvement of primase processivity, determination of product size and transfer of the products to DNA polymerase alpha.
Pssm-ID: 143474 [Multi-domain] Cd Length: 390 Bit Score: 485.23 E-value: 3.63e-172
Eukaryotic and archaeal DNA primase, large subunit; DNA primase is the polymerase that ...
60-324
2.17e-90
Eukaryotic and archaeal DNA primase, large subunit; DNA primase is the polymerase that synthesizes small RNA primers for the Okazaki fragments made during discontinuous DNA replication. DNA primase is a heterodimer of two subunits, the small subunit Pri1 (48 kDa in yeast), and the large subunit Pri2 (58 kDa in the yeast S. cerevisiae). The large subunit of DNA primase forms interactions with the small subunit and the structure implicates that it is not directly involved in catalysis, but plays roles in correctly positioning the primase/DNA complex, and in the transfer of RNA to DNA polymerase.
Pssm-ID: 397980 Cd Length: 222 Bit Score: 271.24 E-value: 2.17e-90
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
This image shows a graphical summary of conserved domains identified on the query sequence.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
or click on the triangles, if present, that represent functional sites (conserved features)
mapped to the query sequence.
Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
(illustrated example)
and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
(CDART).
Modify your query to search against a different database and/or use advanced search options
