alkaline shock response membrane anchor protein AmaP
The founding member of this family, AmaP (Asp23 membrane anchoring protein), is related to Asp23 through part of its length, but includes a highly hydrophobic N-terminal region that should make it an integral membrane protein. Asp23 (alkaline shock protein of 23 kDa), described in PMID:7864904, is a cytosolic protein in Staphylococcus aureus, strongly induced by a pH shift from 7 to 10, and also recruited to the membrane. AmaP appears to be the partner protein with an integral membrane segment and the ability to anchor Asp23 to the membrane. This model was built to identify full-length homologs of AmaP, while excluding Asp23. Some but not all members of this family score above the cutoffs of Pfam model version pfam03780.11, but full-length homologs of Asp23 score considerably higher. Asp23 family members previously were known as DUF322.