Poorly processive, error-prone DNA polymerase involved in untargeted mutagenesis. Copies undamaged DNA at stalled replication forks, which arise in vivo from mismatched or misaligned primer ends. These misaligned primers can be extended by PolIV. Exhibits no 3'-5' exonuclease (proofreading) activity. May be involved in translesional synthesis (By similarity).

Belongs to the DNA polymerase type-Y family.

365 amino acids

MMQRVVLHIDMDYFFAAIEERENPELREKAVVVCMLSGRSELSGSVSTCNYVAREFGIRSGMPCSRAKKLNPEAVFLPVRKDFYTSVSDRIMEILRSYADPGNGDSFEQISVDEAFLESSERTGGDFRLAFEVGMQIKKEIKEKENLTCSIGIGPNKLISKMASSAKKPDGITVVSPQDLEAFLWPLNVSKLWGIGSVTAGKLQEMGIVTVKDLAERDVIELISIFGKSRGTWLKQAASGIDDSPLKERDGSEQIGRIATLPEDSLDKKLISSLIERLAGDVIEKLDSRELSFRIVTVTVINSNFRMYTKSRTLSHPVSSKEVLLQVSGEILDEFLSENRTEFRRVGVRVGGLQKKKGQKSLFDY

40.7 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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