Artikel ; Online: Solution NMR structure of the C-terminal DNA binding domain of Mcm10 reveals a conserved MCM motif.
The Journal of biological chemistry
2010 Band 285, Heft 30, Seite(n) 22942–22949
Abstract: The eukaryotic DNA replication protein Mcm10 associates with chromatin in early S-phase and is required for assembly and function of the replication fork protein machinery. Xenopus laevis (X) Mcm10 binds DNA via a highly conserved internal domain (ID) ... ...
Abstract | The eukaryotic DNA replication protein Mcm10 associates with chromatin in early S-phase and is required for assembly and function of the replication fork protein machinery. Xenopus laevis (X) Mcm10 binds DNA via a highly conserved internal domain (ID) and a C-terminal domain (CTD) that is unique to higher eukaryotes. Although the structural basis of the interactions of the ID with DNA and polymerase alpha is known, little information is available for the CTD. We have identified the minimal DNA binding region of the XMcm10-CTD and determined its three-dimensional structure by solution NMR. The CTD contains a globular domain composed of two zinc binding motifs. NMR chemical shift perturbation and mutational analysis show that ssDNA binds only to the N-terminal (CCCH-type) zinc motif, whose structure is unique to Mcm10. The second (CCCC-type) zinc motif is not involved in DNA binding. However, it is structurally similar to the CCCC zinc ribbon in the N-terminal oligomerization domain of eukaryotic and archaeal MCM helicases. NMR analysis of a construct spanning both the ID and CTD reveals that the two DNA binding domains are structurally independent in solution, supporting a modular architecture for vertebrate Mcm10. Our results provide insight in the action of Mcm10 in the replisome and support a model in which it serves as a central scaffold through coupling of interactions with partner proteins and the DNA. |
---|---|
Mesh-Begriff(e) | Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Conserved Sequence ; DNA/metabolism ; DNA-Binding Proteins/chemistry ; DNA-Binding Proteins/metabolism ; Humans ; Mice ; Minichromosome Maintenance Proteins ; Models, Molecular ; Molecular Sequence Data ; Nuclear Magnetic Resonance, Biomolecular ; Protein Structure, Tertiary ; Xenopus laevis ; Zinc |
Chemische Substanzen | DNA-Binding Proteins ; Mcm10 protein, Xenopus ; DNA (9007-49-2) ; Minichromosome Maintenance Proteins (EC 3.6.4.12) ; Zinc (J41CSQ7QDS) |
Sprache | Englisch |
Erscheinungsdatum | 2010-05-19 |
Erscheinungsland | United States |
Dokumenttyp | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2997-x |
ISSN | 1083-351X ; 0021-9258 |
ISSN (online) | 1083-351X |
ISSN | 0021-9258 |
DOI | 10.1074/jbc.M110.131276 |
Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
Zusatzmaterialien
Kategorien
Verfügbar in ZB MED Köln/Königswinter
Uc I Zs.108: Hefte anzeigen | Standort: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG) |
Über subito bestellen
Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.