Non-encapsulated Streptococcus pneumoniae often possess two genes. aliB-like ORF 1 and aliB-like ORF 2. in place of capsule genes. AliB-like ORF 1 is thought to encode a substrate binding protein of an ABC transporter which binds peptide SETTFGRDFN. https://www.roneverhart.com/5-15P-ANGLE-PLUG-B-W-HUBBELL-HBL5266CA/