The PcrA/UvrD helicase binds directly to RNA polymerase (RNAP). This entry represents the C-terminal tudor domain that mediates interaction with RNA polymerase [4-5].

1: Crystal structure of a DExx box DNA helicase. Subramanya HS, Bird LE, Brannigan JA, Wigley DB; Nature. 1996;384:379-383. PMID:8934527

2: DNA binding mediates conformational changes and metal ion coordination in the active site of PcrA helicase. Soultanas P, Dillingham MS, Velankar SS, Wigley DB; J Mol Biol. 1999;290:137-148. PMID:10388562

3: Structural and mechanistic insight into DNA unwinding by Deinococcus radiodurans UvrD. Stelter M, Acajjaoui S, McSweeney S, Timmins J; PLoS One. 2013;8:e77364. PMID:24143224

4: The structure and function of an RNA polymerase interaction domain in the PcrA/UvrD helicase. Sanders K, Lin CL, Smith AJ, Cronin N, Fisher G, Eftychidis V, McGlynn P, Savery NJ, Wigley DB, Dillingham MS; Nucleic Acids Res. 2017;45:3875-3887. PMID:28160601

5: UvrD helicase-RNA polymerase interactions are governed by UvrD's carboxy-terminal Tudor domain. Kawale AA, Burmann BM; Commun Biol. 2020;3:607. PMID:33097771