InterPro : IPR013196

Name  Helix-turn-helix, type 11 Short Name  HTH_11
Type  Domain Description  Winged helix DNA-binding proteins share a related winged helix-turn-helix DNA-binding motif, where the "wings", or loops, are small beta-sheets. The winged helix motif consists of two wings (W1, W2), three alpha helices (H1, H2, H3) and three beta-sheets (S1, S2, S3) arranged in the order H1-S1-H2-H3-S2-W1-S3-W2 []. The DNA-recognition helix makes sequence-specific DNA contacts with the major groove of DNA, while the wings make different DNA contacts, often with the minor groove or the backbone of DNA. Several winged-helix proteins display an exposed patch of hydrophobic residues thought to mediate protein-protein interactions.This entry represents a subset of the winged helix domain superfamily which is predominantly found in bacterial proteins, though there are also some archaeal and eukaryotic examples. This domain is commonly found in the biotin (vitamin H) repressor protein BirA which regulates transcription of the biotin operon []. It is also found in other proteins including regulators of amino acid biosynthsis such as LysM [], and regulators of carbohydrate metabolisms such as LicR and FrvR [, ].

Sequence Features

GO Displayer


InterPro protein domain ID --> Contigs



0 Child Features

0 Contains

2 Found In

Id Name Short Name Type
IPR011991 Winged helix-turn-helix DNA-binding domain WHTH_DNA-bd_dom Domain
IPR016842 Protein of unknown function UCP026546, HtH-CBS UCP026546_HTH-CBS Family

1 Parent Features

Id Name Short Name Type
IPR011991 Winged helix-turn-helix DNA-binding domain WHTH_DNA-bd_dom Domain

5 Publications

First Author Title Year Journal Volume Pages
Wilson KP Escherichia coli biotin holoenzyme synthetase/bio repressor crystal structure delineates the biotin- and DNA-binding domains. 1992 Proc Natl Acad Sci U S A 89 9257-61
Gajiwala KS Winged helix proteins. 2000 Curr Opin Struct Biol 10 110-6
Reizer J Novel phosphotransferase system genes revealed by bacterial genome analysis: unique, putative fructose- and glucoside-specific systems. 1994 Protein Sci 3 440-50
Brinkman AB The Sulfolobus solfataricus Lrp-like protein LysM regulates lysine biosynthesis in response to lysine availability. 2002 J Biol Chem 277 29537-49
Tobisch S Regulation of the lic operon of Bacillus subtilis and characterization of potential phosphorylation sites of the LicR regulator protein by site-directed mutagenesis. 1999 J Bacteriol 181 4995-5003

To cite PlanMine, please refer to the following publication:

Rozanski, A., Moon, H., Brandl, H., Martín-Durán, J. M., Grohme, M., Hüttner, K., Bartscherer, K., Henry, I., & Rink, J. C.
PlanMine 3.0—improvements to a mineable resource of flatworm biology and biodiversity
Nucleic Acids Research, gky1070. doi:10.1093/nar/gky1070 (2018)