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Literature summary extracted from
- The involvement of human ribonucleases H1 and H2 in the variation of response of cells to antisense phosphorothioate oligonucleotides (2002), Eur. J. Biochem., 269, 583-592.
Cloned(Commentary)
| EC Number | Cloned (Comment) | Organism |
|---|---|---|
| 3.1.26.4 | expression of enzyme type 1 and 2 as GFP-fusion proteins in all 6 cell lines, transfection of cell lines with antisense oligodeoxynucleotides directed against RNA polymerase II, replication protein A, and Ha-ras, determination of response in expression levels of the enzyme type 1 and 2, overview | Homo sapiens |
General Stability
| EC Number | General Stability | Organism |
|---|---|---|
| 3.1.26.4 | partially purified enzyme extract is labile against freezing and dilution, addition of 45% glycerol | Homo sapiens |
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.26.4 | antisense oligodeoxynucleotides | directed against RNA polymerase II, replication protein A, and Ha-ras, determination of response in expression levels of the enzyme type 1 and 2, overview | Homo sapiens | |
| 3.1.26.4 | additional information | presence of intrinsic cell-type specific factors affecting the activity and localization of type 2 enzyme | Homo sapiens |
Localization
| EC Number | Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|---|
| 3.1.26.4 | additional information | enzyme type 1 of all cell lines and enzyme type 2 of 15PC3 are distributed throughout the whole cell, presence of intrinsic cell-type specific factors affecting the activity and localization of type 2 enzyme | Homo sapiens | - |
- |
| 3.1.26.4 | nucleus | type 2 enzyme, restricted to, except in cell line 15PC3 | Homo sapiens | 5634 | - |
Metals/Ions
| EC Number | Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.26.4 | KCl | - |
Homo sapiens |  |
| 3.1.26.4 | Mg2+ | - |
Homo sapiens | |
Natural Substrates/ Products (Substrates)
| EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.1.26.4 | additional information | Homo sapiens | presence of intrinsic cell-type specific factors affecting the activity and localization of type 2 enzyme | ? | - |
? | |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.1.26.4 | Homo sapiens | - |
type 1 and type 2 enzymes | - |
Purification (Commentary)
| EC Number | Purification (Comment) | Organism |
|---|---|---|
| 3.1.26.4 | partially | Homo sapiens |
Source Tissue
| EC Number | Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|---|
| 3.1.26.4 | 15PC3 cell | prostate cancer cell line, high level in enzyme type 1 and 2 activity | Homo sapiens | - |
| 3.1.26.4 | HEK-293 cell | embryonal kidney cell line, high level in enzyme type 1 activity, low level in enzyme type 2 activity | Homo sapiens | - |
| 3.1.26.4 | HeLa cell | cervical carcinoma cell line, high level in enzyme type 1 activity, moderate level in enzyme type 2 activity | Homo sapiens | - |
| 3.1.26.4 | HTB-82 cell | rhabdomyosarcoma cell line, low level in enzyme type 1 and 2 activity | Homo sapiens | - |
| 3.1.26.4 | MiaPaCa-2 cell | pancreatic carcinoma cell line, low level in enzyme type 1 activity, high level in enzyme type 2 activity | Homo sapiens | - |
| 3.1.26.4 | T-24 cell | bladder carcinoma cell line, low level in enzyme type 1 activity, moderate level in enzyme type 2 activity | Homo sapiens | - |
Specific Activity [micromol/min/mg]
| EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|---|
| 3.1.26.4 | additional information | - |
determination of RNA levels | Homo sapiens |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.1.26.4 | additional information | presence of intrinsic cell-type specific factors affecting the activity and localization of type 2 enzyme | Homo sapiens | ? | - |
? | |
| 3.1.26.4 | RNA*DNA hybrid + H2O | specific for the RNA moiety | Homo sapiens | ? | - |
? | |
Synonyms
| EC Number | Synonyms | Comment | Organism |
|---|---|---|---|
| 3.1.26.4 | ribonuclease H | - |
Homo sapiens |
| 3.1.26.4 | RNase H | - |
Homo sapiens |
Temperature Optimum [°C]
| EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 3.1.26.4 | 37 | - |
assay at | Homo sapiens |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.1.26.4 | 7.5 | - |
assay at | Homo sapiens |
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Release 2023.1 (January 2023)
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