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Links from Protein

Items: 5

1.

HTH domain-containing protein

A winged helix-turn-helix domain present in the plant HB1, vertebrate ASXL, the H. pylori restriction endonuclease HpyAIII(HgrA), the RNA polymerase delta subunit(RpoE) of Gram positive bacteria and several restriction endonucleases [1]. The domain is distinguished by the presence of a conserved one-turn helix between helix-3 and the preceding conserved turn. Its diverse architectures in eukaryotic species with extensive gene body methylation is suggestive of a chromatin function. The genetic interaction of the HARE-HTH containing ASXL with the methyl cytosine hydroxylating Tet2 protein is suggestive of a role for the domain in discriminating sequences with DNA modifications such as hmC [1]. Bacterial versions include fusions to diverse restriction endonucleases, and a DNA glycosylase where it may play a similar role in detecting modified DNA. Certain bacterial version of the HARE-HTH domain show fusions to the helix-hairpin-helix domain of the RNA polymerase alpha subunit and the HTH domains found in regions 3 and 4 of the sigma factors [1]. These versions are predicted to function as a novel inhibitor of the binding of RNA polymerase to transcription start sites, similar to the Bacillus delta protein [2,3]. [1]. 10336502. Expression, abundance, and RNA polymerase binding properties of the delta factor of Bacillus subtilis. Lopez de Saro FJ, Yoshikawa N, Helmann JD;. J Biol Chem 1999;274:15953-15958. [2]. 7545758. Structural analysis of the Bacillus subtilis delta factor: a protein polyanion which displaces RNA from RNA polymerase. Lopez de Saro FJ, Woody AY, Helmann JD;. J Mol Biol 1995;252:189-202. [3]. 22186017. TRUNCATED at 1650 bytes (from Pfam)

GO Terms:
Biological Process:
regulation of DNA-templated transcription (GO:0006355)
Date:
2024-10-16
Family Accession:
NF016924.5
Method:
HMM
2.
new record, indexing in progress
Family Accession:
3.
new record, indexing in progress
Family Accession:
4.

DNA-directed RNA polymerase subunit delta

Members of this family are the RNA polymerase delta subunit, as found in the Firmicutes and the Mollicutes. All members of the seed alignment have an extended C-terminal low-complexity region, consisting largely of Asp and Glu, that is not included in the model. Proteins giving borderline scores should be checked to confirm a similar acidic C-terminal domain.

Gene:
rpoE
GO Terms:
Molecular Function:
DNA-directed 5'-3' RNA polymerase activity (GO:0003899)
Biological Process:
DNA-templated transcription (GO:0006351)
Biological Process:
regulation of DNA-templated transcription (GO:0006355)
Date:
2024-05-29
Family Accession:
TIGR04567.1
Method:
HMM
5.

DNA-directed RNA polymerase subunit delta

DNA-directed RNA polymerase subunit delta participates in both the initiation and recycling phases of transcription

Date:
2024-11-05
Family Accession:
10007243
Method:
Sparcle
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