| UniProtKB/Swiss-Prot |
| Q949W8, XK2_ARATH; | C5FSW4, XKS1_ARTOC; | A1CAU3, XKS1_ASPCL; |
| B0Y4D5, XKS1_ASPFC; | B8NTI4, XKS1_ASPFN; | Q4WUV8, XKS1_ASPFU; |
| A2QMS4, XKS1_ASPNC; | Q8X167, XKS1_ASPNG; | Q2U3V4, XKS1_ASPOR; |
| Q0CIL2, XKS1_ASPTN; | Q5ASE0, XKS1_EMENI; | A1DEK3, XKS1_NEOFI; |
| Q9C0U6, XKS1_SCHPO; | P42826, XKS1_YEAST; | P12867, XYLB_ACTM4; |
| P54271, XYLB_ACTS3; | P26909, XYLB_ARTS7; | P39211, XYLB_BACSU; |
| Q3SYZ6, XYLB_BOVIN; | P09099, XYLB_ECOLI; | P44401, XYLB_HAEIN; |
| O75191, XYLB_HUMAN; | P29444, XYLB_KLEPN; | Q9CFG8, XYLB_LACLA; |
| P21939, XYLB_LACPE; | P35850, XYLB_LEVBR; | Q3TNA1, XYLB_MOUSE; |
| Q5R830, XYLB_PONAB; | Q3MIF4, XYLB_RAT; | Q5HL88, XYLB_STAEQ; |
| Q8CR47, XYLB_STAES; | P27155, XYLB_STAXY; | Q9RK00, XYLB_STRCO; |
| P27156, XYLB_STRRU; |
|