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 37NN | pdb_000037nn

Crystal structure of the R. denitrificans GapR bound to 10mer DNA duplex (DNA visible)

External Resource: Annotation


Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF10073GapR-like, DNA-binding domain (GapR_DNA-bd)GapR-like, DNA-binding domainGapR is a nucleoid-associated protein (NAP) critical for cellular function in Caulobacter crescentus (also known as Caulobacter vibrioides). Loss of GapR causes severe defects in growth, cell division, DNA replication, and chromosome segregation [2,3 ...GapR is a nucleoid-associated protein (NAP) critical for cellular function in Caulobacter crescentus (also known as Caulobacter vibrioides). Loss of GapR causes severe defects in growth, cell division, DNA replication, and chromosome segregation [2,3]. This is a DNA-binding protein which has mainly an alpha-helical secondary structure. In the absence of DNA, GapR is a dimer, with each monomer folded into two extended alpha-helices, while in the presence of DNA, GapR forms a tetramer, with the C-terminal alpha-helix of each monomer reorganised into two shorter helices, which allows GapR to encircle the DNA [1,2,3]. This is the DNA-binding domain of GapR from Caulobacter crescentus and related sequences. This domain is not only highly conserved in Alphaproteobacteria, it is also present in cyanobacteria, firmicutes, planctomycetes, actinobacteria, and even archaea and eukaryotes, possibly through horizontal gene transfer. This domain is also found in phages, in which it is associated to DNA-related processes [2].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
I [auth W],
J [auth Z],
K [auth T],
L [auth X]		DNA (5'-D(*TP*AP*AP*TP*TP*AP*AP*TP*TP*A)-3')---
GapR - -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR046367GapR-like, DNA-binding domainDomain
IPR018753GapR-likeFamily