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Literature summary extracted from

  • Inokuchi, N.; Saitoh, S.; Kobayashi, H.; Itagaki, T.; Koyama, T.; Uchiyama, S.; Irie, M.
    Comparison of base specificity and other enzymic properties of two protozoan ribonucleases from Physarum polycephalum and Dictyostelium discoideum (1999), Biosci. Biotechnol. Biochem., 63, 141-145.
    View publication on PubMed

Organism

EC Number Organism UniProt Comment Textmining
3.1.26.1 Physarum polycephalum
-
-
-

Reaction

EC Number Reaction Comment Organism Reaction ID
3.1.26.1 Endonucleolytic cleavage to a 5'-phosphomonoester B1 site, i.e. base recognition site for the base at 5'-side of scissile phosphodiester bond, and B2 site, i.e. base recognition site for the base at 3'-side of the scissile bond, identification Physarum polycephalum

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.1.26.1 additional information
-
-
Physarum polycephalum

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.26.1 ApA + H2O
-
Physarum polycephalum 5'-AMP + adenosine
-
?
3.1.26.1 ApC + H2O
-
Physarum polycephalum 5'-CMP + adenosine
-
?
3.1.26.1 ApG + H2O
-
Physarum polycephalum 5'-GMP + adenosine
-
?
3.1.26.1 ApU + H2O
-
Physarum polycephalum 5'-UMP + adenosine
-
?
3.1.26.1 CpA + H2O
-
Physarum polycephalum 5'-AMP + cytidine
-
?
3.1.26.1 CpC + H2O
-
Physarum polycephalum 5'-CMP + cytidine
-
?
3.1.26.1 CpG + H2O
-
Physarum polycephalum 5'-GMP + cytidine
-
?
3.1.26.1 CpU + H2O
-
Physarum polycephalum 5'-UMP + cytidine
-
?
3.1.26.1 GpA + H2O
-
Physarum polycephalum 5'-AMP + guanosine
-
?
3.1.26.1 GpC + H2O
-
Physarum polycephalum 5'-CMP + guanosine
-
?
3.1.26.1 GpG + H2O
-
Physarum polycephalum 5'-GMP + guanosine
-
?
3.1.26.1 GpU + H2O
-
Physarum polycephalum 5'-UMP + guanosine
-
?
3.1.26.1 additional information substrate specificity Physarum polycephalum ?
-
?
3.1.26.1 poly(I) + H2O
-
Physarum polycephalum 5'-IMP
-
?
3.1.26.1 polyA + H2O
-
Physarum polycephalum AMP
-
?
3.1.26.1 polyC + H2O
-
Physarum polycephalum 5'CMP
-
?
3.1.26.1 polyU + H2O
-
Physarum polycephalum 5'UMP
-
?
3.1.26.1 RNA + H2O yeast RNA, base specificity of B1 site is A,G,U > C and of B2 A > G > C > U, depolymerization Physarum polycephalum mononucleotides
-
?
3.1.26.1 UpA + H2O
-
Physarum polycephalum 5'-AMP + uridine
-
?
3.1.26.1 UpC + H2O
-
Physarum polycephalum 5'-CMP + uridine
-
?
3.1.26.1 UpG + H2O
-
Physarum polycephalum 5'-GMP + uridine
-
?
3.1.26.1 UpU + H2O
-
Physarum polycephalum 5'-UMP + uridine
-
?

Synonyms

EC Number Synonyms Comment Organism
3.1.26.1 RNase Phyb
-
Physarum polycephalum

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.1.26.1 50
-
-
Physarum polycephalum

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
3.1.26.1 20 50 stable upto 45°C, loss of approximately 30% activity at 50°C, inactive at 55°C Physarum polycephalum

Turnover Number [1/s]

EC Number Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
3.1.26.1 additional information
-
additional information
-
Physarum polycephalum

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.1.26.1 5
-
-
Physarum polycephalum

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.1.26.1 3 6 very labile below pH 3.0, stable up to pH 6.0 Physarum polycephalum