Os01g0683550

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Annotated Information

Function

The Shortened Uppermost Internode 1(SUI1) family of genes are pivotal for development of rice stems. SUI-family genes regulate the development of intercalary meristem(IM) for internode elongation and also the cell expansion of the panicle stem rachis in rice. The SUI-family genes encode base-exchange types of phosphatidylserine synthases (PSSs), which possess enzymatic activity in a yeast complementary assay.

The genetic characterization of some revertants identified three unlinked suppressor loci: SUI1, SUI2 and sui3, which when mutated restored the expression of the HIS4 allele despite the absence of the AUG initiator codon. Both sui1 and sui2 are recessive and cause temperature-sensitive growth on enriched medium. The temperature-sensitive phenotype and the ability to restore HIS4 expression associated with either sui1 or sui2 mutations cosegregate in crosses. SUI3 mutations are dominant and do not alter the thermal profile for growth. None of the mutations at the three loci suppresses known frameshift, missense or nonsense mutations. Each is capable of suppressing the nine different point mutations of the initiator codon at HIS4 or HIS4-lacZ as well as a two base change (ACC) and a three base deletion of the AUG codon, suggesting that the site of suppression resides outside the normal initiator region. sui1 and sui2 suppressor mutations were mapped to chromosomes XIV and X, respectively. Suppression by sui1, sui2 and SUI3 mutations results in 14-, 11- and 47-fold increases, respectively, relative to isogenic parent strains, in the expression of a HIS4 allele lacking the initiator AUG codon. Part of this increase in the HIS4 expression by sui2 and SUI3 can be attributed to increases of HIS4 mRNA levels, presumably mediated by perturbation of the general amino acid control system of yeast.

Expression

SUI3 is mainly expressed in the fringe and internode（Yin et al. 2013）

Labs working on this gene

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References

1.Hengfu Yin;Peng Gao;Chengwu Liu;Jun Yang;Zhongchi Liu;Da Luo

 SUI-family genes encode phosphatidylserine synthases and regulate stem development in rice
 Planta, 2013, 237(1): 15-27

Structured Information

ORIGIN

       1 agcagagacc gccgtcgctt ccacagcatt cggctcccat ccatcaccgt agacgagtaa
      61 tcaactccat tgatgccagc ggtgaggtga tggaatatgg atctagtaac gatcagagga
     121 tgcaggacat ggaaatatgg ccgtcggacg gcggcggcgt ggaggaatac gacccgtgga
     181 cggcttggct ttacaagcca cacacggtct cggttctcct tgccggcgca tgcctcctga
     241 tctgggcaag tggggtcctt catccagaga ttacaagctc tcatgataag gtcataccta
     301 ttaaaagggg tgtctgggct atgatcgcag ttttcctagc atactgcact ctccaagcac
     361 cttcaacgat acttattagg cctcatcctg ctgtgtggcg tttggtgcat ggcatggctg
     421 ttgtgtacct tgttgctcta acttttcttc ttttccagaa acgtgatgat gccaggcagt
     481 ttatgaagca ccttcaccct ggtctcggag ttgaactacc agagagatca tatggttctg
     541 actgccgtat gtatgttcca gaaaacccta ccaacagatt tattaatatt caagagacat
     601 tgtttgatga atttgttatt gcccatgtct tgggttggtg gggtaaggca gtaatgatac
     661 ggaaccaact tctcctatgg gtcttgtcag ttggttttga gctcatggag cttacattta
     721 ggcacatgct gccaaatttt aacgagtgtt ggtgggacag tattatattg gatatcatga
     781 tatgtaattg gtttggtgta tttgggcggg gatgcacaca gtccgttact ttgatggcaa
     841 aacatacgaa tgggttggac tgggtaaaaa ggtcattatg tcagttcaca cccgctaaat
     901 gggataagga tcaatggcat cctttcatgg agccaaggag attcatccaa gtgttctgtc
     961 tctgcgtcgg tttcatgaca gtggaactta acaccttctt cctgaaattt tgtctctgga
    1021 ttcctcccag gaaccccttg aaaaccagtg aagaaggtgg gagctttttg ttggctttcg
    1081 ttagctatat gcatggtaga gctgcttata tgcatgaagt ttggacacgg tgagttattt
    1141 tatagtatgt agcatattct tggcaaatta acaagggcat acagtttatg tcgatacatg
    1201 cttggtcagt ctttgtgcta acatgaatca acataaccag gtttgtttca agatccaatg
    1261 cctacttggt tgattactct ttggatttgt gtggggattt ctcttgcgct tttcttgctg
    1321 gaatggtcac gaagg