(from Interpro) Accessory Sec protein Asp2. Proteins in this entry form part of an accessory Sec system which is involved in the export of serine-rich repeat (SRR) glycoproteins important for virulence in a number of Gram-positive species, including Streptococcus gordonii and Staphylococcus aureus. Asp2 and Asp3 interact directly with GspB and may function in part as chaperones in the early phase of GspB transport. Asp2 is a bifunctional protein that is essential for both GspB transport and correct glycosylation