The expanding family of Arabidopsis thaliana small heat stress proteins and a new family of proteins containing alpha-crystallin domains (Acd proteins)

Cell Stress Chaperones. 2001 Jul;6(3):225-37. doi: 10.1379/1466-1268(2001)006<0225:tefoat>;2.


Comprehensive analysis of the Arabidopsis genome revealed a total of 13 sHsps belonging to 6 classes defined on the basis of their intracellular localization and sequence relatedness plus 6 ORFs encoding proteins distantly related to the cytosolic class Cl or the plastidial class of sHsps. The complexity of the Arabidopsis sHsp family far exceeds that in any other organism investigated to date. Furthermore, we have identified a new family of ORFs encoding multidomain proteins that contain one or more regions with homology to the ACD (Acd proteins). The functions of the Acd proteins and the role of their ACDs remain to be investigated.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Arabidopsis / genetics*
  • Arabidopsis / metabolism
  • Arabidopsis Proteins / chemistry
  • Arabidopsis Proteins / genetics*
  • Arabidopsis Proteins / metabolism
  • Crystallins / chemistry
  • Databases, Genetic
  • Heat-Shock Proteins / chemistry
  • Heat-Shock Proteins / classification
  • Heat-Shock Proteins / genetics*
  • Heat-Shock Proteins / metabolism
  • Molecular Sequence Data
  • Molecular Weight
  • Open Reading Frames
  • Phylogeny
  • Plant Proteins / chemistry
  • Promoter Regions, Genetic
  • Protein Isoforms
  • Sequence Alignment


  • Arabidopsis Proteins
  • Crystallins
  • Heat-Shock Proteins
  • Plant Proteins
  • Protein Isoforms