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We are deeply saddened by the passing of Amos Bairoch (1957–2025), the creator of PROSITE. We wish to dedicate our latest paper, published shortly before his death, to him. He will always be a source of inspiration to us.
Our deepest condolences go out to his family and friends, and to all those who had the privilege of working with him. Rest in peace, Amos. Your work will live on long after you are gone.
Amos Bairoch

PROSITE documentation PDOC51203
CS domain profile


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PURL: https://purl.expasy.org/prosite/documentation/PDOC51203

Description

The bipartite CS domain, which was named after CHORD-containing proteins and SGT1 [1], is a ~100-residue protein-protein interaction module. It is only present in eukaryota (alveolata, fungi, metazoa, and plant divisions). The CS domain can be found in stand-alone form, as well as fused with other domains, such as CHORD, SGS (see <PDOC51048>), TPR (see <PDOC50005>), cytochrome b5 (see <PDOC00170>) or b5 reductase, in multidomain proteins [2].

The CS domain has a compact antiparallel β-sandwich fold consisting of seven β-strands (see <PDB:1EJF>) [2,3].

Some proteins known to contain a CS domain are listed below [2]:

  • Eukaryotic proteins of the SGT1 family.
  • Eukaryotic Rar1, related to pathogenic resistance in plants, and to development in animals.
  • Eukaryotic nuclear movement protein nudC.
  • Eukaryotic proteins of the p23/wos2 family, which act as co-chaperone.
  • Animal b5+b5R flavo-hemo cytochrome NAD(P)H oxydoreductase type B.
  • Mammalian integrin β-1-binding protein 2 (melusin).

The profile we developed covers the entire CS domain.

Note:

The CS domain is also known as the p23-like domain [2].

Last update:

May 2006 / First entry.

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Technical section

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

CS, PS51203; CS domain profile  (MATRIX)


References

1AuthorsShirasu K. Lahaye T. Tan M.-W. Zhou F. Azevedo C. Schulze-Lefert P.
TitleA novel class of eukaryotic zinc-binding proteins is required for disease resistance signaling in barley and development in C. elegans.
SourceCell 99:355-366(1999).
PubMed ID10571178

2AuthorsGarcia-Ranea J.A. Mirey G. Camonis J. Valencia A.
Titlep23 and HSP20/alpha-crystallin proteins define a conserved sequence domain present in other eukaryotic protein families.
SourceFEBS Lett. 529:162-167(2002).
PubMed ID12372593

3AuthorsLee Y.-T. Jacob J. Michowski W. Nowotny M. Kuznicki J. Chazin W.J.
TitleHuman Sgt1 binds HSP90 through the CHORD-Sgt1 domain and not the tetratricopeptide repeat domain.
SourceJ. Biol. Chem. 279:16511-16517(2004).
PubMed ID14761955
DOI10.1074/jbc.M400215200



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