1nxt Summary

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MicArec pH 4.0

The structure was published by Bent, C.J., Isaacs, N.W., Mitchell, T.J., and Riboldi-Tunnicliffe, A., in 2004 in a paper entitled "Crystal structure of the response regulator 02 receiver domain, the essential YycF two-component system of Streptococcus pneumoniae in both complexed and native states." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.34 Å and deposited in 2003.

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

The PDB entry contains the structure of DNA-binding response regulator. This molecule has the UniProt identifier Q9S1K0 (Q9S1K0_STREE)search. The sample contained 120 residues which is < 90% of the natural sequence. Out of 120 residues 116 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 DNA-binding response regulator Q9S1K0 (1-120) (Q9S1K0_STREE)search Streptococcus pneumoniaesearch < 90% 120 96%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
Q9S1K0 (1 - 120) DNA-binding response regulator Streptococcus pneumoniae TIGR4

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A CheY-relatedsearch Rossmann foldsearch Response regulator receiver domainsearch

Chain ID Biological process (GO)
A (Q9S1K0) phosphorelay signal transduction systemsearch

Chain InterPro annotation
A Signal transduction response regulator, receiver domainsearch CheY-like superfamilysearch