| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q6Q560 | Protein ISD11; Iron-sulfur protein biogenesis, desulfurase-interacting protein 11; | ISD11; YER048W-A; | NP_010968.1; | 94 | yeast |
| P32488 | Increasing suppression factor 1; Mitochondrial biogenesis regulation protein 3; | ISF1; MBR3; YMR081C; | NP_013798.1; | 338 | yeast |
| Q99312 | IMP-specific 5'-nucleotidase 1; EC 3.1.3.-; | ISN1; YOR155C; | NP_014798.3; | 450 | yeast |
| Q06098 | Serine/threonine-protein kinase ISR1; EC 2.7.11.1; Inhibition of staurosporine resistance protein 1; | ISR1; YPR106W; | NP_015431.1; | 443 | yeast |
| P53843 | Vacuolar protein sorting-associated protein IST1; Increased sodium tolerance protein 1; | IST1; YNL265C; | NP_014134.1; | 298 | yeast |
| P38250 | Increased sodium tolerance protein 2; | IST2; YBR086C; | NP_009643.2; | 946 | yeast |
| P40565 | U2 snRNP component IST3; Increased sodium tolerance protein 3; U2 snRNP protein SNU17; | IST3; SNU17; YIR005W; | NP_012270.1; | 148 | yeast |
| Q03020 | Iron sulfur cluster assembly protein 1, mitochondrial; Iron sulfur cluster scaffold protein 1; | ISU1; NUA1; YPL135W; | NP_015190.1; | 165 | yeast |
| Q12056 | Iron sulfur cluster assembly protein 2, mitochondrial; Iron sulfur cluster scaffold protein 2; | ISU2; NUA2; YOR226C; | NP_014869.3; | 156 | yeast |
| P38144 | ISWI chromatin-remodeling complex ATPase ISW1; EC 3.6.4.-; | ISW1; YBR245C; | NP_009804.1; | 1129 | yeast |
| Q08773 | ISWI chromatin-remodeling complex ATPase ISW2; EC 3.6.4.-; Imitation switch protein 2; | ISW2; YOR304W; | NP_014948.1; | 1120 | yeast |
| P21374 | Pre-mRNA-splicing factor ISY1; Interactor of SYF1; PRP19-associated complex protein 30; | ISY1; NTC30 UTR3; YJR050W; | NP_012584.3; | 235 | yeast |
| P53125 | Imitation switch two complex protein 1; | ITC1; YGL133W; | NP_011382.1; | 1264 | yeast |
| P47119 | Inosine triphosphate pyrophosphatase; ITPase; Inosine triphosphatase; EC 3.6.1.19; Hydroxylaminopurine sensitivity protein 1; Non-canonical purine NTP pyrophosphatase; Non-standard purine NTP pyrophosphatase; Nucleoside-triphosphate diphosphatase; Nucleos疩?疪 | HAM1; YJR069C; | NP_012603.1; | 197 | yeast |
| P30605 | Myo-inositol transporter 1; | ITR1; YDR497C; | NP_010785.1; | 584 | yeast |
| P30606 | Myo-inositol transporter 2; | ITR2; YOL103W; | NP_014538.2; | 609 | yeast |
| Q04638 | Translation termination inhibitor protein ITT1; | ITT1; YML068W; | NP_013643.1; | 464 | yeast |
| Q04934 | Protein IVY1; Interaction with VPS33 and YPT7 protein 1; | IVY1; YDR229W; | NP_010515.3; | 453 | yeast |
| Q07532 | RNA polymerase II nuclear localization protein IWR1; Interacting with RNA polymerase II protein 1; | IWR1; YDL115C; | NP_010168.4; | 353 | yeast |
| Q06505 | Transcription factor SPN1; Interacts with SPT6 protein 1; Suppresses postrecruitment functions protein 1; | SPN1; IWS1; YPR133C; | NP_015458.1; | 410 | yeast |
