| Code | Name | ID | MW | PDB ID | Crystallographer | Purification |
|---|---|---|---|---|---|---|
| MPD | unknown | IDP90781 | 40,706.68 kDa | 4R7J | Youngchang Kim | Magdalena Makowska-Grzyska (ANL) |
| SEE | trihydroxy(l-serinato-kappao~3~)borate(1-) | IDP07508 | 30,965.30 kDa | 6AZI | George Minasov | Olga Kiryukhina (NU) |
| CTO | triacetylchitotriose | IDP05616 | 37,100.63 kDa | 5I1T | Salvatore Nocadello | Salvatore Nocadello (NU) |
| TOY | tobramycin | IDP91783 | 28,035.22 kDa | 4EBK | Peter Stogios | Elena Evdokimova (UT) |
| TOY | tobramycin | IDP91868 | 16,430.38 kDa | 4EVY | Peter Stogios | Elena Evdokimova (UT) |
| TMP | thymidine-5'-phosphate | IDP90611 | 23,649.22 kDa | 3LV8 | Andrei Halavaty | James Winsor (NU) |
| TYD | thymidine-5'-diphosphate | IDP90611 | 23,649.22 kDa | 3LV8 | Andrei Halavaty | James Winsor (NU) |
| THM | thymidine | IDP00692 | 46,292.79 kDa | 3H5Q | Igor Shumilin | Olena Onopriyenko (UT) |
| THM | thymidine | IDP90611 | 23,649.22 kDa | 3N2I | Andrei Halavaty | James Winsor (NU) |
| SCN | thiocyanate ion | IDP95696 | 19,601.19 kDa | 6B8W | George Minasov | Christopher Mcchesney (UT) |
| SCN | thiocyanate ion | IDP05606 | 33,481.78 kDa | 3TL2 | Bartek Blus | Marina Kudritska (UT) |
| TPP | thiamine diphosphate | IDP90564 | 69,622.32 kDa | 3M34 | Boguslaw Nocek | Magdalena Makowska-Grzyska (ANL) |
| TPP | thiamine diphosphate | IDP90564 | 69,622.32 kDa | 3M6L | Boguslaw Nocek | Magdalena Makowska-Grzyska (ANL) |
| TPP | thiamine diphosphate | IDP90564 | 69,622.32 kDa | 3M7I | Boguslaw Nocek | Magdalena Makowska-Grzyska (ANL) |
| TDP | thiamin diphosphate | IDP02454 | 72,395.74 kDa | 3M49 | Natalia Maltseva | Natalia Maltseva (ANL) |
| TES | testosterone | IDP95820 | 65,651.83 kDa | 6MDQ | Mateusz Czub | Karolina Majorek (UVA) |
| TCH | taurocholic acid | IDP07301 | 24,432.23 kDa | 6PXA | Kemin Tan | Min Zhou (ANL) |
| TTN | tartronate | IDP05761 | 46,004.31 kDa | 5TU0 | George Minasov | Albin Cardona-Correa (NU) |
| TTN | tartronate | IDP92786 | 14,743.02 kDa | 5IQJ | George Minasov | Tatiana Skarina (UT) |
| TAR | tartrate | IDP90784 | 47,213.53 kDa | 3NRS | Boguslaw Nocek | Natalia Maltseva (ANL) |