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Phosphate-starvation-inducible E family This entry represents an integral membrane protein with 4 transmembrane helices. The second alpha helix contains a conserved glutamic acid residue and the third helix contains a conserved arginine residue. These two buried charged residues may interact. The type example for this family is the Phosphate-starvation-inducible E (PsiE) expression protein, which is under direct positive and negative control by PhoB and cAMP-CRP, respectively. The function of PsiE remains to be determined. This entry is sometimes found in proteins that contain other domains such as pfam11563. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",