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Literature summary extracted from

  • Feng, Y.; Chelico, L.
    Intensity of deoxycytidine deamination of HIV-1 proviral DNA by the retroviral restriction factor APOBEC3G is mediated by the noncatalytic domain (2011), J. Biol. Chem., 286, 11415-11426.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
3.5.4.B9 expressed in Sf9 insect cells Homo sapiens

Protein Variants

EC Number Protein Variants Comment Organism
3.5.4.B9 F126A/W127A the mutant has altered DNA scanning properties in jumping which results in decreased abilities to induce mutagenesis during reverse transcription. The mutant demonstrates a stronger preference than native enzyme for C residues at the 5'-ssDNA end and is processive Homo sapiens
3.5.4.B9 H186R the clinical mutant is associated with high viral loads. The mutant has altered DNA scanning properties in sliding which results in decreased abilities to induce mutagenesis during reverse transcription. The mutant retains a strong preference for deamination of the 5'-CCC motif and exhibits a processivity factor that is similar to native enzym Homo sapiens

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.5.4.B9 cytosine in single-stranded viral DNA + H2O Homo sapiens native enzyme demonstrates a preference for deamination of the C residue proximal to the 5'-ssDNA end in the 5'CCC motif and deaminates the two C residues processively uracil in single-stranded viral DNA + NH3
-
 ?
3.5.4.B9 additional information Homo sapiens the enzyme has a catalytically inactive N-terminal CD1 domain that mediates processivity and an active C-terminal CD2 domain that catalyzes deaminations. The enzyme cannot bind well to double-stranded DNA. Native enzyme is still able to processively deaminate two C residues with a double-stranded DNA region in-between, but with a 2fold decrease in the processivity factor ?
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
3.5.4.B9 Homo sapiens
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.5.4.B9
-
 Homo sapiens

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.5.4.B9 cytosine in single-stranded viral DNA + H2O native enzyme demonstrates a preference for deamination of the C residue proximal to the 5'-ssDNA end in the 5'CCC motif and deaminates the two C residues processively Homo sapiens uracil in single-stranded viral DNA + NH3
-
 ?
3.5.4.B9 additional information the enzyme has a catalytically inactive N-terminal CD1 domain that mediates processivity and an active C-terminal CD2 domain that catalyzes deaminations. The enzyme cannot bind well to double-stranded DNA. Native enzyme is still able to processively deaminate two C residues with a double-stranded DNA region in-between, but with a 2fold decrease in the processivity factor Homo sapiens ?
-
 ?

Synonyms

EC Number Synonyms Comment Organism
3.5.4.B9 Apo3G
-
 Homo sapiens
3.5.4.B9 APOBEC3G
-
 Homo sapiens

General Information

EC Number General Information Comment Organism
3.5.4.B9 physiological function the enzyme restricts replication of HIV-1 by inducing viral genome mutagenesis through deamination of cytosine to uracil on HIV-1 cDNA processively through jumping and sliding. The jumping and sliding of Apo3G is needed for efficient mutational inactivation of HIV-1 Homo sapiens