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- DatabaseRoberts, Richard J.Summary: "A collection of information about restriction enzymes and related proteins. It contains published and unpublished references, recognition and cleavage sites, isoschizomers, commercial availability, methylation sensitivity, crystal and sequence data. DNA methyltransferases, homing endonucleases, nicking enzymes, specificity subunits and control proteins are also included. Putative DNA methyltransferases and restriction enzymes, as predicted from analysis of genomic sequences, are also listed."Digital Access Database
- ArticleLeishmania donovani: ultrastructural localization of diaminobenzidine reactivity in the amastigotes.Enriquez GL, Ebert F, Mühlpfordt H.Tropenmed Parasitol. 1978 Sep;29(3):315-8.Intracellular amastigotes of Leishmania donovani obtained from spleens of infected hamsters were studied by means of the diaminobenzidine technique for the presence of cytochromes and the activities of cytochrome oxidase and peroxidase. In the absence of H2O2, the oxidation of DAB, evidenced by electron-dense deposits localized on the cristae, inclusions, and enveloping membranes of the mitochondria and kinetoplast, revealed the activity of the cytochrome oxidase and the presence of the cytochromes. The increased deposition of DAB oxidation especially on the enveloping membranes in the presence of H2O2 suggests the activity of a peroxidase, probably cytochrome c peroxidase.