Archaeal actin homolog

UniProtKB accession:  Q9HKL4

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UniProtKB description:  Polymerizes into bundles of filaments, forming a helix with a filament width of 5.5 nm and an axial repeating unit of 5.5 nm. Polymerization of Ta0583 requires NTP and is optimal with ATP, but GTP, UTP, CTP, and even the deoxy form of NTP can also support the polymerization reaction. Nucleoside diphosphate or AMP-PNP does not support polymerization.