UniProt functional annotation for P03643

UniProt code: P03643.

Organism: Enterobacteria phage phiX174 (Isolate Sanger) (Bacteriophage phi-X174).
Taxonomy: Viruses; Monodnaviria; Sangervirae; Phixviricota; Malgrandaviricetes; Petitvirales; Microviridae; Bullavirinae; Sinsheimervirus.
 
Function: 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. {ECO:0000269|PubMed:10739948, ECO:0000269|PubMed:14553915}.
 
Subunit: Pentamerizes and interacts with H protein, F and B pentamers to form 12S pre-assembly complex. Joining of twelve 12S complex form the procapsid.
Subcellular location: Virion. Host cytoplasm.
Similarity: Belongs to the microvirus G protein family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.