Cloned (Comment) | Organism |
---|---|
DNA and amino acid sequence determination of isozyme SSAT-2, localization of isozyme SSAT-2 on chromosome 17p13.1, expression of isozyme SSAT-2 in HEK-293 cells | Homo sapiens |
localization of isozyme SSAT-1 on chromosome Xp22 | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
acetyl-CoA + spermidine | Homo sapiens | - |
CoA + N1-acetylspermidine | - |
? | |
acetyl-CoA + spermine | Homo sapiens | - |
CoA + N1-acetylspermine | - |
? | |
additional information | Homo sapiens | isozyme SSAT-2 shows very low activity in intact wild-type cells, but is equally active to isozyme SSAT-1 in recombinantly transfected cells | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | P21673 | 2 isozymes SSAT-1 and SSAT-2 | - |
Homo sapiens | P21673 | isozyme SSAT-1; 2 isozymes SSAT-1 and SSAT-2 | - |
Homo sapiens | Q96F10 | isozyme SSAT-2; 2 isozymes SSAT-1 and SSAT-2 | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
small cell lung cancer cell | isozyme SSAT-2 | Homo sapiens | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
- |
Homo sapiens |
0.00007 | - |
recombinant HEK-293 cells expressing isozyme SSAT-2, substrate putrescine | Homo sapiens |
0.00008 | - |
recombinant HEK-293 cells expressing isozyme SSAT-2, substrate N1-acetylspermine | Homo sapiens |
0.00009 | - |
recombinant HEK-293 cells expressing isozyme SSAT-1, substrate putrescine | Homo sapiens |
0.0002 | - |
recombinant HEK-293 cells expressing isozyme SSAT-1, substrate N1-acetylspermine | Homo sapiens |
0.00023 | - |
recombinant HEK-293 cells expressing isozyme SSAT-2, substrate spermine | Homo sapiens |
0.00025 | - |
recombinant HEK-293 cells expressing isozyme SSAT-2, substrate spermidine | Homo sapiens |
0.0004 | - |
recombinant HEK-293 cells expressing isozyme SSAT-1, substrate spermine | Homo sapiens |
0.00068 | - |
recombinant HEK-293 cells expressing isozyme SSAT-2, substrate norspermidine | Homo sapiens |
0.001 | - |
recombinant HEK-293 cells expressing isozyme SSAT-1, substrate spermidine | Homo sapiens |
0.0011 | - |
recombinant HEK-293 cells expressing isozyme SSAT-1, substrate norspermidine | Homo sapiens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
acetyl-CoA + N1-acetylspermine | - |
Homo sapiens | CoA + N1,N12-diacetylspermine | - |
? | |
acetyl-CoA + norspermidine | - |
Homo sapiens | CoA + N1-acetylnorspermidine | - |
? | |
acetyl-CoA + putrescine | - |
Homo sapiens | CoA + N1-acetylputrescine | - |
? | |
acetyl-CoA + spermidine | - |
Homo sapiens | CoA + N1-acetylspermidine | - |
? | |
acetyl-CoA + spermine | - |
Homo sapiens | CoA + N1-acetylspermine | - |
? | |
additional information | isozyme SSAT-2 shows very low activity in intact wild-type cells, but is equally active to isozyme SSAT-1 in recombinantly transfected cells | Homo sapiens | ? | - |
? | |
additional information | substrate specificity of isozyme SSAT-1 in descending order: norspermidine equal spermidine, spermine, N1-acetylspermine, putrescine | Homo sapiens | ? | - |
? | |
additional information | substrate specificity of isozyme SSAT-2 in descending order: norspermidine, spermidine equal spermine, N1-acetylspermine equal putrescine | Homo sapiens | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
spermidine/spermine N1-acetyltransferase | - |
Homo sapiens |
SSAT-1 | - |
Homo sapiens |
SSAT-2 | - |
Homo sapiens |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Homo sapiens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.2 | - |
assay at | Homo sapiens |