1v1f Summary

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STRUCTURE OF THE ARABIDOPSIS THALIANA SOS3 COMPLEXED WITH CALCIUM(II) AND MANGANESE(II) IONS

The structure was published by Sanchez-Barrena, M.J., Martinez-Ripoll, M., Zhu, J.K., and Albert, A., in 2005 in a paper entitled "The Structure of the Arabidopsis Thaliana SOS3: Molecular Mechanism of Sensing Calcium for Salt Stress Response" (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 3.0 Å and deposited in 2004.

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

The PDB entry contains the structure of CALCINEURIN B-LIKE PROTEIN 4. This molecule has the UniProt identifier O81223 (CNBL4_ARATH)search. The sample contained 222 residues which is 100% of the natural sequence. Out of 222 residues 188 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 most likely forms homodimers.

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 CALCINEURIN B-LIKE PROTEIN 4 O81223 (1-222) (CNBL4_ARATH)search Arabidopsis thalianasearch 93% 222 84%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
O81223 (1 - 222) CALCINEURIN B-LIKE PROTEIN 4 Arabidopsis thaliana

Chain Structural classification (CATH)
A (O81223) EF-handsearch

Chain ID Molecular function (GO) Cellular component (GO) Biological process (GO)
A (O81223) calcium ion bindingsearch protein bindingsearch calcium-dependent protein serine/threonine phosphatase activitysearch metal ion bindingsearch cytoplasmsearch plasma membranesearch nucleussearch calcineurin complexsearch membranesearch hypotonic salinity responsesearch stomatal movementsearch detection of calcium ionsearch cellular potassium ion homeostasissearch dephosphorylationsearch calcium-mediated signalingsearch

Chain InterPro annotation
A EF-hand domainsearch EF-hand domain pairsearch Calcineurin B proteinsearch