| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q7PC79 | Exportin-T; Exportin(tRNA); Protein PAUSED; tRNA exportin; | PSD; At1g72560; | NP_001077813.1;NP_001185383.1;NP_177400.2; | 988 | arabidopsis |
| Q9LF61 | Xylulose 5-phosphate/phosphate translocator, chloroplastic; Xul-5-P/phosphate translocator; | XPT; RPT; At5g17630; | NP_197265.1; | 417 | arabidopsis |
| Q24JK4 | DNA-repair protein XRCC1; AtXRCC1; Homolog of X-ray repair cross complementing 1; | XRCC1; At1g80420; | NP_001077856.1;NP_001185449.1;NP_178158.2;NP_850985.1; | 353 | arabidopsis |
| Q682D3 | DNA repair protein XRCC2 homolog; X-ray repair cross-complementing protein 2 homolog; AtXRCC2; | XRCC2; At5g64520; | NP_001032141.1;NP_851268.1; | 372 | arabidopsis |
| Q9FKM5 | DNA repair protein XRCC3 homolog; X-ray repair cross-complementing protein 3 homolog; AtXRCC3; | XRCC3; At5g57450; | NP_200554.1;NP_851202.1; | 304 | arabidopsis |
| Q682V0 | DNA repair protein XRCC4; | XRCC4; At3g23100; | NP_001154639.1;NP_188951.2; | 264 | arabidopsis |
| Q6NLW5 | Protein XRI1; Protein X-RAY INDUCED 1; | XRI1; At5g48720; | NP_001154770.1;NP_199683.2; | 300 | arabidopsis |
| Q9FQ02 | 5'-3' exoribonuclease 2; EC 3.1.13.-; Protein EXORIBONUCLEASE 2; | XRN2; At5g42540/At5g42550; | NP_199069.1; | 1012 | arabidopsis |
| Q9FQ03 | 5'-3' exoribonuclease 3; EC 3.1.13.-; Protein EXORIBONUCLEASE 3; | XRN3; At1g75660; | NP_565114.1; | 1020 | arabidopsis |
| Q9FQ04 | 5'-3' exoribonuclease 4; EC 3.1.13.-; Protein ACC INSENSITIVE 1; Protein ETHYLENE INSENSITIVE 5; Protein EXORIBONUCLEASE 4; | XRN4; AIN1 EIN5; At1g54490; | NP_175851.1; | 947 | arabidopsis |
| Q9LLL8 | Xylem serine proteinase 1; AtXSP1; EC 3.4.21.-; Cucumisin-like protein; | XSP1; At4g00230; | NP_567155.1; | 749 | arabidopsis |
| Q9ZVK1 | Probable xyloglucan endotransglucosylase/hydrolase protein 10; At-XTH10; XTH-10; EC 2.4.1.207; | XTH10; XTR14; At2g14620; | NP_179069.1; | 299 | arabidopsis |
| Q9SMP1 | Probable xyloglucan endotransglucosylase/hydrolase protein 11; At-XTH11; XTH-11; EC 2.4.1.207; | XTH11; At3g48580; | NP_566910.1; | 277 | arabidopsis |
| Q9FKL9 | Probable xyloglucan endotransglucosylase/hydrolase protein 12; At-XTH12; XTH-12; EC 2.4.1.207; | XTH12; At5g57530; | NP_200561.1; | 285 | arabidopsis |
| Q9FKL8 | Putative xyloglucan endotransglucosylase/hydrolase protein 13; At-XTH13; XTH-13; EC 2.4.1.207; | XTH13; At5g57540; | NP_200562.1; | 284 | arabidopsis |
| Q9ZSU4 | Xyloglucan endotransglucosylase/hydrolase protein 14; At-XTH14; XTH-14; EC 2.4.1.207; | XTH14; XTR9; At4g25820; | NP_194312.1; | 287 | arabidopsis |
| Q38911 | Probable xyloglucan endotransglucosylase/hydrolase protein 15; At-XTH15; XTH-15; EC 2.4.1.207; | XTH15; XTR7; At4g14130; | NP_193149.2; | 289 | arabidopsis |
| Q8LG58 | Probable xyloglucan endotransglucosylase/hydrolase protein 16; At-XTH16; XTH-16; EC 2.4.1.207; | XTH16; At3g23730; | NP_566738.1; | 291 | arabidopsis |
| O80803 | Probable xyloglucan endotransglucosylase/hydrolase protein 17; At-XTH17; XTH-17; EC 2.4.1.207; | XTH17; XTR1; At1g65310; | NP_176710.1; | 282 | arabidopsis |
| Q9M0D2 | Probable xyloglucan endotransglucosylase/hydrolase protein 18; At-XTH18; XTH-18; EC 2.4.1.207; | XTH18; At4g30280; | NP_194757.1; | 282 | arabidopsis |
