Assembles the procapsid by joining twelve 12S pre-assembly complex into a T=1 icosahedral particle, called 108S procapsid. Ten proteins D bind each 12S complex, which are formed by three pentamers of F, G, B protein and a H protein. The scaffolding protein is released from the provirion after genome packaging to form the mature virion.
Belongs to the microvirus D protein family.
Component of the procapsid particle composed of 60 copies of the internally located B, 240 copies of the external scaffolding protein D, 60 copies of each of the viral structural proteins F and G, and 12 copies of protein H.
Attaches the circulating virion to the bacterial lipopolysaccharides which serve as receptor for the virus. Determines the phage host-range. Probably triggers with protein H the injection of the phage DNA into the host cytoplasm upon conformational changes induced by the interaction with host lipopolysaccharides (By similarity).
Attaches the circulating virion to the bacterial lipopolysaccharides which serve as receptor for the virus. Determines the phage host-range. Probably triggers with protein H the injection of the phage DNA into the host cytoplasm upon conformational changes induced by the interaction with host lipopolysaccharides.
Belongs to the microvirus G protein family.
The virion is composed of 60 copies each of the F, G, and J proteins, and 12 copies of the H protein. There are 12 spikes which are each composed of 5 G and one H proteins.
E protein is responsible for host cell lysis.
The A protein is a specific endonuclease that cleaves the viral strand of supertwisted, closed circular DNA at a unique site in the A gene. The A protein also causes relaxation of supertwisted DNA and forms a complex with viral DNA that has a discontinuity in gene A of the viral strand.
Belongs to the microviridae B protein family.
Component of the procapsid complex composed of 60 copies of the internally located B, 240 copies of the external scaffolding protein D, 60 copies of each of the viral structural proteins F and G proteins, and 12 copies of H.
Participates in the assembly of the viral procapsid in the cytoplasm. Forms first a 12S pre-assembly complex with protein H, and F and G pentamers, then twelve 12S complexes are joined by the D protein to form the procapsid. Internal scaffold protein B is released from the procapsid upon genome packaging. Autoproteolytic activity cleaves protein B and probably facilitates its removal through the pores of the procapsid.
The proteolytic cleavage of the internal scaffolding protein B releases the scaffold protein in order to continue virion assembly.
Minor spike component of the viral shell. Involved in the ejection of the phage DNA in the host and is injected with the DNA in the periplasmic space of the host. Involved in the determination of the phage host-range (By similarity).
C protein is one of the proteins involved in the production and packaging of viral single-stranded DNA.
No function has yet been ascribed to K protein.
Assembles to form an icosahedral capsid with a T=1 symmetry, about 30 nm in diameter, and consisting of 60 capsid proteins F. Upon virus binding to host cell, one of the spikes dissociates from the capsid and the virus interacts with LPS through the exposed EF loops on the F proteins. After the genome had been ejected, the channel formed by the F proteins at the unique fivefold axis remains open.
Belongs to the microviridae F protein family.
Pentamerizes and interacts with H protein, G and B pentamers to form 12S pre-assembly complex. By binding with protein D, induces joining of twelve 12S complex to form the procapsid. The procapsid has an external scaffold made of 240 copies of protein D, 60 copies of the internally located B protein, and contains 60 copies of each of the viral structural proteins F and G. Upon genome packaging, interacts with protein J. The mature virion is composed of 60 copies each of the F, G, and J proteins, and 12 copies of the H protein.
Belongs to the microviridae J protein family.
Mediates ssDNA packaging into virion, it locates to the internal surface of the capsid, thereby displacing the internal scaffolding protein B during virion formation. Protein J binds to and is packaged with the viral ssDNA. Additionally, protein J plays a role in viral attachment efficiency to the host cell.