1) The Archaeoglobus AglB lacked a beta- barrel-like structure, which had been found in other AglB and PglB structures. 2) AfAglB uses acceptor substrate NH2?Ala-Ala-Tyr-Asn-Val-Thr-Lys-Arg-(Lys-TAMRA) for in vitro assay. 3) Single oligosaccharide chain comprising four Hex and three dHex (2590.1361 Da) were transferred but detailed chemical structure of glycan not known.