3ja7

Cryo-EM structure of the bacteriophage T4 portal protein assembly at near-atomic resolutionCryo-EM structure of the bacteriophage T4 portal protein assembly at near-atomic resolution

3ja7, resolution 3.63Å Show:Asymmetric Unit Biological Assembly Structural highlights 3ja7 is a 12 chain structure with sequence from Escherichia virus T4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.63Å Experimental data: Check Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PORTL_BPT4 Forms the portal vertex of the capsid (PubMed:2685327, PubMed:24126213). This portal plays critical roles in head assembly, genome packaging, neck/tail attachment, and genome ejection. The portal protein multimerizes as a single ring-shaped homododecamer arranged around a central channel. Binds to the terminase subunits to form the packaging machine. Attaches to the host inner membrane most likely through interaction with host yidC and forms together with chaperone gp40 an initiator complex to form the prohead. See Also Portal protein 3D structures