| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species | 
| Q8RY24 | Probable sucrose-phosphate synthase 3; EC 2.4.1.14; Sucrose phosphate synthase 3F; AtSPS3F; UDP-glucose-fructose-phosphate glucosyltransferase; | SPS3; SPSB; At1g04920; | NP_171984.2; | 1062 | arabidopsis | 
| F4JLK2 | Probable sucrose-phosphate synthase 4; EC 2.4.1.14; Sucrose phosphate synthase 4F; AtSPS4F; UDP-glucose-fructose-phosphate glucosyltransferase; | SPS4; SPSC; At4g10120; | NP_001031609.1;NP_192750.2; | 1050 | arabidopsis | 
| Q94BN2 | Spermine synthase; SPMSY; EC 2.5.1.22; Spermidine aminopropyltransferase; | SPMS; SPDS3; At5g53120; | NP_001078748.1;NP_001078749.1;NP_568785.1;NP_851178.1;NP_851179.1; | 359 | arabidopsis | 
| O82491 | FACT complex subunit SPT16; Facilitates chromatin transcription complex subunit SPT16; | SPT16; At4g10710; | NP_192809.1; | 1074 | arabidopsis | 
| Q94C60 | Transcription elongation factor SPT4 homolog 2; | At5g63670; | NP_568976.1; | 116 | arabidopsis | 
| Q8LCQ3 | Transcription elongation factor SPT4 homolog 1; | At5g08565; | NP_568201.1; | 116 | arabidopsis | 
| Q9STN3 | Putative transcription elongation factor SPT5 homolog 1; | At4g08350; | NP_192575.3; | 1041 | arabidopsis | 
| O80770 | Putative transcription elongation factor SPT5 homolog 2; | At2g34210; | NP_180968.2; | 989 | arabidopsis | 
| Q9FUA4 | Transcription factor SPATULA; Basic helix-loop-helix protein 24; AtbHLH24; bHLH 24; Transcription factor EN 99; bHLH transcription factor bHLH024; | SPT; BHLH24 EN99; At4g36930; | NP_568010.1; | 373 | arabidopsis | 
| Q8LBH4 | SPX domain-containing protein 1; Protein SPX DOMAIN GENE 1; AtSPX1; | SPX1; At5g20150; | NP_197515.1; | 256 | arabidopsis | 
| O48781 | SPX domain-containing protein 2; Protein SPX DOMAIN GENE 2; AtSPX2; | SPX2; At2g26660; | NP_180234.1; | 287 | arabidopsis | 
| Q5PP62 | SPX domain-containing protein 3; Protein SPX DOMAIN GENE 3; AtSPX3; | SPX3; At2g45130; | NP_182038.1; | 245 | arabidopsis | 
| Q94A21 | SPX domain-containing protein 4; Protein SPX DOMAIN GENE 4; AtSPX4; | SPX4; At5g15330; | NP_568312.1; | 318 | arabidopsis | 
| Q2V4F9 | SPX domain-containing membrane protein At1g63010; | At1g63010; | NP_001077762.1;NP_001077763.1;NP_564807.2;NP_974073.2; | 697 | arabidopsis | 
| Q9T050 | SPX domain-containing membrane protein At4g11810; | At4g11810; | NP_192918.1; | 707 | arabidopsis | 
| Q93ZQ5 | SPX domain-containing membrane protein At4g22990; | At4g22990; | NP_567674.1; | 699 | arabidopsis | 
| Q96301 | Probable UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase SPINDLY; EC 2.4.1.-; | SPY; At3g11540; | NP_187761.1; | 914 | arabidopsis | 
| Q9SIR9 | Serpin-Z10; ArathZ10; | At2g25240; | NP_180096.3; | 385 | arabidopsis | 
| Q9SH52 | Serpin-Z1; ArathZ1; | At1g64030; | NP_176586.1; | 385 | arabidopsis | 
| Q9ZQR6 | Serpin-Z2; ArathZ2; | At2g14540; | NP_179060.1; | 407 | arabidopsis | 


