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Identification of Mycobacterium tuberculosis DNA in a pre-Columbian Peruvian mummy.
The existence of tuberculosis in the pre-Columbian Americas is controversial because the morphology of the lesion is not specific, the organism is culturally nonviable in ancient tissues, andExpand
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Pre-Columbian tuberculosis in northern Chile: molecular and skeletal evidence.
Analysis of 483 skeletons from Arica (Chile) and review of mummy dissection records demonstrates an overall 1% prevalence rate for tuberculosis between 2000 B.C. and A.D. 1500. Tuberculosis casesExpand
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Formation of intersubunit disulfide bonds and properties of the single histidine and cysteine residues in each subunit relative to the decameric structure of cyanase.
Reaction of the single cysteine residue in each subunit of cyanase with certain SH reagents gives an active decameric derivative that dissociates reversibly to an inactive dimer derivative (Anderson,Expand
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Reaction of the N-terminal methionine residues in cyanase with diethylpyrocarbonate.
Cyanase is an inducible enzyme in Escherichia coli that catalyzes the reaction of cyanate with bicarbonate to give ammonia and carbon dioxide. The enzyme is a decamer of identical subunits (M(r) =Expand
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