The CaPRP1 gene encoding a putative proline-rich glycoprotein is highly expressed in rapidly elongating early roots and leaves in hot pepper (Capsicum annuum L. cv. Pukang)

Hyung Gon Mang, Jae Hoon Lee, Jong A. Park, Jaeho Pyee, Hyun Sook Pai, Joo Hun Lee, Woo Taek Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Most of the proline-rich cell wall glycoprotein genes isolated from higher plants are preferentially expressed in the transmitting tissues of the flower organ. In conducting expressed sequence tag (EST) analysis, which was prepared from 5-day-old early roots of hot pepper (Capsicum annuum L. cv. Pukang), we identified a cDNA clone, pCaPRP1, encoding a putative cell wall proline-rich glycoprotein. CaPRP1 (Mr=28 kDa, pI=9.98) was most closely related to Nicotiana alata NaPRP4 (71%), while most distantly related to soybean PvPRP (37%). The predicted primary structure of CaPRP1 contains a putative N-terminal signal peptide, six repeats of the Lys-Pro-Pro tripeptide, four repeats of a five-amino acid sequence [Pro-(Ser/The)-Pro-Pro-Pro] and one potential N-glycosylation site (Asn-Asn-Ser). In contrast to most proline-rich cell wall glycoprotein genes, CaPRP1 was highly expressed in rapidly elongating very early roots and young leaves as well as developing flower tissues. Although the physiological function of CaPRP1 is not yet clear, there are several possibilities for its role in cell expansion and elongation during early development of hot pepper plants.

Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalBiochimica et Biophysica Acta - General Subjects
Volume1674
Issue number1
DOIs
Publication statusPublished - 2004 Sep 6

Bibliographical note

Funding Information:
This work was supported by grants from Plant Metabolism Research Center at Kyung Hee University (Science Research Center Program from Korea Science and Engineering Foundation) and Plant Diversity Research Center (21st Century Frontier Research Program funded by Ministry of Science and Technology of Korean government, project number PF0330404-00) to W.T.K.

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology

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