Adenosine metabolizing enzymes in seminal plasma of bull and man: a comparative study.
1. Adenosine metabolizing enzymes in seminal plasma of man and bull have been investigated. 2. A different level of 5'-nucleotidase activity has been found in two seminal plasmas: in bull 5'-nucleotidase represents 80% of the total AMP dephosphorylating enzymes while in man 5'-nucleotidase represents only 1.3% of the total AMP dephosphorylating activities. 3. Apart from the different levels of 5'-nucleotidase activity, different kinetic parameters have been reported for 5'-nucleotidase, acid prostatic phosphatases, ADA and PNP. 4. Adenosine kinase, xanthine oxidase and AdoHcy-hydrolase have not been detected in the seminal plasma of man and bull.
Minelli
A
A
Department of Experimental Medicine and Biochemistry, Università di Perugia, Italy.
Fabiani
R
R
Moroni
M
M
Mezzasoma
I
I
D015720:5'-Nucleotidase / Q000378:metabolism; D000135:Acid Phosphatase / Q000378:metabolism; D000241:Adenosine / Q000378:metabolism*; D000243:Adenosine Deaminase / Q000378:metabolism; D000249:Adenosine Monophosphate / Q000378:metabolism; D000818:Animals; D002417:Cattle; D006801:Humans; D007700:Kinetics; D008297:Male; D011467:Prostate / Q000201:enzymology; D011683:Purine-Nucleoside Phosphorylase / Q000378:metabolism; D012661:Semen / Q000201:enzymology*; D013045:Species Specificity
D000249:Adenosine Monophosphate; D011683:Purine-Nucleoside Phosphorylase; D000135:Acid Phosphatase; D015720:5'-Nucleotidase; D000243:Adenosine Deaminase; D000241:Adenosine