ISDA: 8D96

Deposition Date 2022-06-09

Release Date 2023-04-19

Last Version Date 2024-06-12

Entry Detail

PDB ID:

8D96

Keywords:

REPLICATION

Title:

Human DNA polymerase alpha/primase elongation complex I bound to primer/template

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli 'BL21-Gold(DE3)pLysS AG'

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.35 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:DNA primase large subunit
Gene (Uniprot):PRIM2
Chain IDs:A (auth: B)
Chain Length:509
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P49643 Pfam ID:PF04104 EC:2.7.7.102

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:DNA polymerase alpha catalytic subunit
Gene (Uniprot):POLA1
Chain IDs:B (auth: C)
Chain Length:1462
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P09884 Pfam ID:PF12254, PF03104, PF00136, PF08996 EC:2.7.7.102

Polymer Type:polydeoxyribonucleotide/polyribonucleotide hybrid
Molecule:DNA/RNA (5'-GTP)-R(P*GP*CP*GP*GP*CP*AP*CP*G)-D(P*AP*CP*C)-3')
Chain IDs:C (auth: E)
Chain Length:12
Number of Molecules:1
Biological Source:Homo sapiens

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(*AP*TP*AP*AP*TP*GP*GP*TP*CP*GP*TP*GP*CP*CP*GP*CP*CP*AP*AP*TP*AP*A)-3')
Chain IDs:D (auth: F)
Chain Length:22
Number of Molecules:1
Biological Source:Homo sapiens

Ligand Molecules

DTP

SF4

Primary Citation

Structures of human primosome elongation complexes.

He, Q, Baranovskiy, A.G, Morstadt, L.M, Lisova, A.E, Babayeva, N.D, Lusk, B.L, Lim, C.J, Tahirov, T.H.Show

Nat.Struct.Mol.Biol. 30 579 583 (2023)

PMID: 37069376 DOI: 10.1038/s41594-023-00971-3

Abstact

The synthesis of RNA-DNA primer by primosome requires coordination between primase and DNA polymerase α subunits, which is accompanied by unknown architectural rearrangements of multiple domains. Using cryogenic electron microscopy, we solved a 3.6 Å human primosome structure caught at an early stage of RNA primer elongation with deoxynucleotides. The structure confirms a long-standing role of primase large subunit and reveals new insights into how primosome is limited to synthesizing short RNA-DNA primers.

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Protein

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Primary Citation of related structures

Abstact

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