PROSITE documentation PDOC51277
BURP domain profile


The BURP domain is a ~230-residue module, which has been named for the four members of the group initially identified, BNM2, USP, RD22, and PG1β. It is found in the C-terminal part of a number of plant cell wall proteins, which are defined not only by the BURP domain, but also by the overall similarity in their modular construction. The BURP domain proteins consists of either three or four modules: (i) an N-terminal hydrophobic domain - a presumptive transit peptide, joined to (ii) a short conserved segment or other short segment, (iii) an optional segment consisting of repeated units which is unique to each member, and (iv) the C-terminal BURP domain. Although the BURP domain proteins share primary structural features, their expression patterns and the conditions under which they are expressed differ. The presence of the conserved BURP domain in diverse plant proteins suggests an important and fundamental functional role for this domain [1]. It is possible that the BURP domain represents a general motif for localization of proteins within the cell wall matrix. The other structural domains associated with the BURP domain may specify other target sites for intermolecular interactions [2].

Some proteins known to contain a BURP domain are listed below [1,2,3]:

  • Brassica napus BNM2, which is expressed during the induction of microspore embryogenesis.
  • Field bean USPs, abundant non-storage seed proteins with unknown function.
  • Soybean USP-like proteins ADR6 (or SALI5-4A), an auxin -repressible, aluminium-inducible protein and SALI3-2, a protein that is up-regulated by aluminium.
  • Soybean seed coat BURP-domain protein 1 (SCB1). It might play a role in the differenciation of the seed coat parenchyma cells.
  • Arabidopsis thaliana RD22 drought induced protein.
  • Maize ZRP2, a protein of unknown function in cortex parenchyma.
  • Tomato PG1β, the β-subunit of polygalacturonase isozyme 1 (PG1), which is expressed in ripening fruits.
  • Cereal RAFTIN. It is essential specifically for the maturation phase of pollen development.

The profile we developed covers the entire BURP domain.

Last update:

November 2006 / First entry.


Technical section

PROSITE method (with tools and information) covered by this documentation:

BURP, PS51277; BURP domain profile  (MATRIX)


1AuthorsHattori J. Boutilier K.A. van Lookeren Campagne M.M. Miki B.L.A.
TitleA conserved BURP domain defines a novel group of plant proteins with unusual primary structures.
SourceMol. Gen. Genet. 259:424-428(1998).
PubMed ID9790599

2AuthorsBatchelor A.K. Boutilier K.A. Miller S.S. Hattori J. Bowman L.A. Hu M. Lantin S. Johnson D.A. Miki B.L.A.
TitleSCB1, a BURP-domain protein gene, from developing soybean seed coats.
SourcePlanta 215:523-532(2002).
PubMed ID12172833

3AuthorsWang A. Xia Q. Xie W. Datla R. Selvaraj G.
TitleThe classical Ubisch bodies carry a sporophytically produced structural protein (RAFTIN) that is essential for pollen development.
SourceProc. Natl. Acad. Sci. U.S.A. 100:14487-14492(2003).
PubMed ID14612572

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