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Structural basis for specific substrate recognition by the chloroplast signal recognition particle protein cpSRP43

The structure was published by Stengel, K.F., Holdermann, I., Cain, P., Robinson, C., Wild, K., and Sinning, I., in 2008 in a paper entitled "Structural basis for specific substrate recognition by the chloroplast signal recognition particle protein cpSRP43." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 1.5 Å and deposited in 2008.

The experimental data on which the structure is based was also deposited.

The PDB entry contains the structure of Signal recognition particle 43 kDa protein. This molecule has the UniProt identifier O22265 (SR43C_ARATH)search. The sample contained 183 residues which is < 90% of the natural sequence. Out of 183 residues 183 were observed and are deposited in the PDB.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule is most likely monomeric.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A Signal recognition particle 43 kDa protein O22265 (85-267) (SR43C_ARATH)search Arabidopsis thalianasearch < 90% 183 100%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
O22265 (85 - 267) Signal recognition particle 43 kDa protein Arabidopsis thaliana

Chain Structural classification (SCOP) Sequence family (Pfam)
A Chromo domainsearch, Artificial ankyrin repeat proteinssearch Ankyrin repeatsearch
Chain InterPro annotation
A Chromo domain/shadowsearch Ankyrin repeatsearch Chromo domain-likesearch Ankyrin repeat-containing domainsearch