Details for type III site-specific deoxyribonuclease complex
Gene ontology ID
GO:0019813
Definition
A heterodimeric enzyme complex composed of two subunits, Res and Mod, that functions as an endonuclease and cleaves DNA. Cleavage will only occur when there are two un-methylated copies of a specific recognition site in an inverse orientation on the DNA. Cleavage occurs at a specific distance away from one of the recognition sites. The Mod subunit can act alone as a methyltansferase. DNA restriction systems such as this are used by bacteria to defend against phage and other foreign DNA that may enter a cell
Synonyms
1. type III restriction enzyme complex
References
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is an element of the parent element
is a part of the parent element
is related to the parent element
derives from the parent element
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at least 1 tissue/ enzyme/ localization link in this branch
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tissue/ enzyme/ localization link to BRENDA
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