This domain can be found at the N terminus of TgpA from Pseudomonas aeruginosa. TgpA is a transglutaminase that plays a critical role in the viability of Pseudomonas aeruginosa [1,2]. This domain is composed of 5 transmembrane helices [2].

1: TgpA, a protein with a eukaryotic-like transglutaminase domain, plays a critical role in the viability of Pseudomonas aeruginosa. Milani A, Vecchietti D, Rusmini R, Bertoni G; PLoS One. 2012;7:e50323. PMID:23209712

2: Structural and functional characterization of TgpA, a critical protein for the viability of Pseudomonas aeruginosa. Uruburu M, Mastrangelo E, Bolognesi M, Ferrara S, Bertoni G, Milani M; J Struct Biol. 2019;205:18-25. PMID:30599211