7z4b

Bacteriophage SU10 virion (C1)Bacteriophage SU10 virion (C1)

7z4b, resolution 7.40Å Show:Asymmetric Unit Biological Assembly Structural highlights 7z4b is a 109 chain structure with sequence from Escherichia phage vB_EcoP_SU10. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 7.4Å Experimental data: Check Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0B4N1Q7_9CAUD Publication Abstract from PubMed Escherichia coli phage SU10 belongs to the genus Kuravirus from the class Caudoviricetes of phages with short non-contractile tails. In contrast to other short-tailed phages, the tails of Kuraviruses elongate upon cell attachment. Here we show that the virion of SU10 has a prolate head, containing genome and ejection proteins, and a tail, which is formed of portal, adaptor, nozzle, and tail needle proteins and decorated with long and short fibers. The binding of the long tail fibers to the receptors in the outer bacterial membrane induces the straightening of nozzle proteins and rotation of short tail fibers. After the re-arrangement, the nozzle proteins and short tail fibers alternate to form a nozzle that extends the tail by 28 nm. Subsequently, the tail needle detaches from the nozzle proteins and five types of ejection proteins are released from the SU10 head. The nozzle with the putative extension formed by the ejection proteins enables the delivery of the SU10 genome into the bacterial cytoplasm. It is likely that this mechanism of genome delivery, involving the formation of the tail nozzle, is employed by all Kuraviruses. Tail proteins of phage SU10 reorganize into the nozzle for genome delivery.,Siborova M, Fuzik T, Prochazkova M, Novacek J, Benesik M, Nilsson AS, Plevka P Nat Commun. 2022 Sep 24;13(1):5622. doi: 10.1038/s41467-022-33305-w. PMID:36153309 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Portal protein 3D structures