Gene Ontology annotation based on UniProtKB/Swiss-Prot keyword mapping
UniProtKB record for P13337 (29_BPT4)
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gp29 is a virion component that serves as the base for tail tube polymerization and the template for tail length determination.
"FUNCTION: Serves as a base for tail tube protein polymerization and acts as a template for tail length determination."
Deep research summary for Bacteriophage T4 gene 29 (gp29)
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gp29 is the bacteriophage T4 tape measure protein that initiates gp19 polymerization in association with gp54 and halts tube elongation when fully extended.
"A dedicated T4 tail morphogenesis review states that tail tube polymerization stops when gp29 is fully extended and explicitly identifies gp29 as the tape measure protein."