Protein Family Models

This domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain acts as a sensor binding small molecule ligands that the DNA-binding domain responds to. This domain recognises Sugars, sugar phosphates, sugar acids and purines (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043). (from Pfam)

Date:

2024-08-14

This family includes the periplasmic binding proteins, and the LacI family transcriptional regulators. The periplasmic binding proteins are the primary receptors for chemotaxis and transport of many sugar based solutes. The LacI family of proteins consist of transcriptional regulators related to the lac repressor. In this case, generally the sugar binding domain binds a sugar which changes the DNA binding activity of the repressor domain (Pfam:PF00356). [1]. 1583688. 1.7 A X-ray structure of the periplasmic ribose receptor from Escherichia coli. Mowbray SL, Cole LB;. J Mol Biol 1992;225:155-175. [2]. 8638105. Crystal structure of the lactose operon repressor and its complexes with DNA and inducer. Lewis M, Chang G, Horton NC, Kercher MA, Pace HC, Schumacher MA, Brennan RG, Lu P;. Science 1996;271:1247-1254. (from Pfam)

Date:

2024-10-16

This family of regulatory proteins consists of the N-terminal HTH region of GntR-like bacterial transcription factors. At the C-terminus there is usually an effector-binding/oligomerisation domain. The GntR-like proteins include the following sub-families: MocR, YtrR, FadR, AraR, HutC and PlmA, DevA, DasR [1-2][4][5]. Many of these proteins have been shown experimentally to be autoregulatory, enabling the prediction of operator sites and the discovery of cis/trans relationships [3]. The DasR regulator has been shown to be a global regulator of primary metabolism and development in Streptomyces coelicolor [5]. [1]. 12867439. PlmA, a new member of the GntR family, has plasmid maintenance functions in Anabaena sp. strain PCC 7120. Lee MH, Scherer M, Rigali S, Golden JW;. J Bacteriol 2003;185:4315-4325. [2]. 11756427. Subdivision of the helix-turn-helix GntR family of bacterial regulators in the FadR, HutC, MocR, and YtrA subfamilies. Rigali S, Derouaux A, Giannotta F, Dusart J;. J Biol Chem 2002;277:12507-12515. [3]. 15247334. Extending the classification of bacterial transcription factors beyond the helix-turn-helix motif as an alternative approach to discover new cis/trans relationships. Rigali S, Schlicht M, Hoskisson P, Nothaft H, Merzbacher M, Joris B, Titgemeyer F;. Nucleic Acids Res 2004;32:3418-3426. [4]. 16936034. A new GntR family transcriptional regulator in streptomyces coelicolor is required for morphogenesis and antibiotic production and controls transcription of an ABC transporter in response to carbon source. Hillerich B, Westpheling J;. J Bacteriol. 2006;188:7477-7487. [5]. 16925557. The sugar phosphotransfer. TRUNCATED at 1650 bytes (from Pfam)

Date:

2024-10-16

GntR-family transcriptional regulator is one of a group of transcriptional regulators with a conserved N-terminal helix-turn-helix DNA-binding domain and a diverse C-terminal effector-binding and oligomerization domain

Date:

2024-04-17