NDLI: Human and mouse mitochondrial orthologs of bacterial ClpX

Content Provider	Springer Nature Link
Author	Corydon, Thomas J. Wilsbech, Mette Jespersgaard, Cathrine Andresen, Brage S. Børglum, Anders D. Pedersen, Søren Bolund, Lars Gregersen, Niels Bross, Peter
Copyright Year	2000
Abstract	We have determined the cDNA sequence and exon/intron structure of the human CLPX gene encoding a human ortholog of the E. coli ClpX chaperone and protease subunit. The CLPX gene comprises 14 exons and encodes a 633-amino acid-long precursor polypeptide. The polypeptide contains an N-terminal putative mitochondrial transit peptide, and expression of a full-length ClpX cDNA tagged at its C-terminus (Myc-His) shows that the polypeptide is transported into mitochondria. FISH analysis localized the CLPX gene to human Chromosome (Chr) 15q22.1-22.32. This localization was refined by radiation hybrid mapping placing the CLPX gene 4.6 cR distal to D15S159. Murine ClpX cDNA was sequenced, and the mouse Clpx locus was mapped to a position between 31 and 42 cM offset from the centromere on mouse Chr 9. Experimental observations indicate the presence of a pseudogene in the mouse genome and sequence variability between mouse ClpX cDNAs from different strains. Alignment of the human and mouse ClpX amino acid sequences with ClpX sequences from other organisms shows that they display the typical modular organization of domains with one AAA+ domain common to a large group of ATPases and several other domains conserved in ClpX orthologs linked by non-conserved sequences. Notably, a C-4 zinc finger type motif is recognized in human and mouse ClpX. This motif of so far unknown function is present only in a subset of the known ClpX sequences.
Starting Page	899
Ending Page	905
Page Count	7
File Format	PDF
ISSN	09388990
Journal	Mammalian Genome
Volume Number	11
Issue Number	10
e-ISSN	14321777
Language	English
Publisher	Springer-Verlag
Publisher Date	2014-02-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cell Biology Anatomy Zoology
Content Type	Text
Resource Type	Article
Subject	Genetics

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