4kw3

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Crystal structure of the non-structural protein 1 N-terminal origin-recognition/nickase domain from the emerging human bocavirusCrystal structure of the non-structural protein 1 N-terminal origin-recognition/nickase domain from the emerging human bocavirus

Structural highlights

4kw3 is a 2 chain structure with sequence from Human bocavirus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.7Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

NS1_HBOC1 Multifunctional protein which displays endonuclease and helicase activities required for initiating and directing viral DNA replication. Also plays a role in viral packaging and transactivation of several promoters. Binds site-specifically to 2-3 approximate tandem copies within the origins of replication (Ori), unwinds this hairpin region and nicks one DNA strand thereby initiating the rolling circle replication (RCR). Becomes covalently attached to the 5' end of the nick and provides a 3'OH for priming DNA synthesis. The helicase activity unwinds DNA in a 3'-5' direction on the longer strand. Participates in the transcriptional regulation of several promoters.[UniProtKB:P03134]

4kw3, resolution 2.70Å

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OCA