| Q6GJF8 | CYSK_STAAR | Staphylococcus aureus (strain MRSA252) | cysK SAR0514 | Detail |
| Q5XAQ3 | CYSK_STRP6 | Streptococcus pyogenes serotype M6 (strain ATCC BAA-946 / MGAS10394) | cysK M6_Spy1375 | Detail |
| Q59966 | CYSK_SYNE7 | Synechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2) | srpG Synpcc7942_B2664 pANL40 | Detail |
| P06106 | CYSD_YEAST | Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) | MET17 MET15 MET25 YLR303W L8003.1 | Detail |
| Q8RX73 | DDPS3_ARATH | Arabidopsis thaliana (Mouse-ear cress) | At5g58780 MZN1.22 | Detail |
| P29848 | CYSM_SALTY | Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) | cysM STM2440 | Detail |
| Q8S2T1 | DDPS6_ARATH | Arabidopsis thaliana (Mouse-ear cress) | At2g17570 MJB20.13 | Detail |
| P71062 | EPSL_BACSU | Bacillus subtilis (strain 168) | epsL yvfC BSU34250 | Detail |
| P71065 | EPSO_BACSU | Bacillus subtilis (strain 168) | epsO yvfF BSU34220 | Detail |
| P65861 | CRTB_MYCBO | Mycobacterium bovis (strain ATCC BAA-935 / AF2122/97) | crtB phyA BQ2027_MB3430C | Detail |