Protein Variants | Comment | Organism |
---|---|---|
additional information | removal of the 41 C-terminal amino acids (fourth Ca2+-binding loop) separated by several nanometers from Lys21 drastically decreases the affinity and reactivity of the synthetase for calmodulin | Oryctolagus cuniculus |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | - |
Oryctolagus cuniculus | |
0.0009 | - |
Calmodulin | calmodulin from paramecium tetraurelia | Oryctolagus cuniculus | |
0.0013 | - |
Calmodulin | calmodulin from Xenopus laevis | Oryctolagus cuniculus | |
0.0049 | - |
Calmodulin | calmodulin from bovine testis | Oryctolagus cuniculus |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ca2+ | required | Oryctolagus cuniculus |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
n ATP + calmodulin + n ubiquitin | Oryctolagus cuniculus | monoubiquitylation strongly decreases the biological activity of calmodulin towards phosphorylase kinase by reducing its affinity approximately threefold and the maximal degree of activation approximately twofold | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Oryctolagus cuniculus | - |
- |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
reticulocyte | - |
Oryctolagus cuniculus | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
n ATP + calmodulin + n ubiquitin | monoubiquitylation strongly decreases the biological activity of calmodulin towards phosphorylase kinase by reducing its affinity approximately threefold and the maximal degree of activation approximately twofold | Oryctolagus cuniculus | ? | - |
? | |
[RING-E3-ubiquitin-carrier protein]-S-ubiquitinyl-L-cysteine + [calmodulin]-L-lysine | calmodulin from bovine testis, Xenopus laevis or Paramecium tetraurelia. Paramecium calmodulin which is dimethylated at Lys13 is an efficient susbstrate | Oryctolagus cuniculus | [RING-E3-ubiquitin-carrier protein]-L-cysteine + [calmodulin]-N6-ubiquitinyl-L-lysine | - |
? | |
[RING-E3-ubiquitin-carrier protein]-S-ubiquitinyl-L-cysteine + [calmodulin]-L-lysine | the ubiquitylation site has the octapeptide structure -L-F-D-K21-D-G-D-G- with Lys21 being the ubiquitylated residue in vertebrate and other calmodulins. Removal of the 41 C-terminal amino acids (fourth Ca2+-binding loop) separated by several nanometers from Lys21 drastically decreases the affinity and reactivity of the synthetase for calmodulin. The nearly identical site -V-F-D-K94-D-G-N-G- in the third Ca2+-binding loop of vertebrate calmodulin is apparently not ubiquitylated by the synthetase | Oryctolagus cuniculus | [RING-E3-ubiquitin-carrier protein]-L-cysteine + [calmodulin]-N6-ubiquitinyl-L-lysine | - |
? |