This domain is found N-terminal to a beta-lactamase domain, and it may have phosphatase activity [1]. This domain is found in Beta-lactamase hydrolase-like protein from Agrobacterium fabrum, which may play a role in cell adherence or biofilm development [2].

1: Crystal structure of NMA1982 from Neisseria meningitidis at 1.5 angstroms resolution provides a structural scaffold for nonclassical, eukaryotic-like phosphatases. Krishna SS, Tautz L, Xu Q, McMullan D, Miller MD, Abdubek P, Ambing E, Astakhova T, Axelrod HL, Carlton D, Chiu HJ, Clayton T, DiDonato M, Duan L, Elsliger MA, Grzechnik SK, Hale J, Hampton E, Han GW, Haugen J, Jaroszewski L, Jin KK, Klock HE, Knuth MW, Koesema E, Morse AT, Mustelin T, Nigoghossian E, Oommachen S, Reyes R, Rife CL, van den Bedem H, Weekes D, White A, Hodgson KO, Wooley J, Deacon AM, Godzik A, Lesley SA, Wilson IA; Proteins. 2007;69:415-421. PMID:17636569

2: BigR, a transcriptional repressor from plant-associated bacteria, regulates an operon implicated in biofilm growth. Barbosa RL, Benedetti CE; J Bacteriol. 2007;189:6185-6194. PMID:17586627