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  • Title: Molecular cloning and sequence analysis of a developmentally regulated cysteine-rich outer membrane protein from Chlamydia trachomatis.
    Author: Clarke IN, Ward ME, Lambden PR.
    Journal: Gene; 1988 Nov 30; 71(2):307-14. PubMed ID: 3066701.
    Abstract:
    Two overlapping genomic fragments have been cloned from Chlamydia trachomatis serovar L1 DNA. Sequence determination of 2530 bp has revealed two open reading frames coding for 'cysteine-rich' (Cr) proteins. One of these proteins was confirmed, by analysis of the inferred amino acid sequence, as the 60-kDa Cr outer membrane protein associated with differentiation of reticulate bodies (RBs) into elementary bodies (EBs). The other smaller 15-kDa protein contained a high percentage of methionine and cysteine and may correspond to a reported smaller and co-ordinately synthesised Cr outer-membrane protein also associated with RB to EB differentiation. Sequencing showed three potential stem-loop structures within the 5', 3' and intergenic regions of the cloned fragment. Southern-blot analysis revealed that the cloned fragment is conserved in ten serovars of C. trachomatis and that a strongly cross-hybridising fragment is also present in Chlamydia psittaci.
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