title: Patterns of purine nucleotides in fish erythrocytes.
abstract: 1. The purine nucleotides were determined in the whole blood of 9 fresh water teleosts and 2 marine selachians. 2. GTP and ATP accounted for 88-99% of the total erythrocytes purines. 3. The ATP/ADP ratio ranged from 11 to 60 in the erythrocytes of the fish examined. 4. GTP is widely distributed in fish erythrocytes but its level ranged from 1 to 33 nmol/mg Hb (0.4 to 9 mumol/ml erythrocyte). 5. Lepomis and Esox exhibited a GTP/ATP ratio as elevated as in Anguilla; moreover the concentration of GTP per mol of Hb (physiologically most indicative) is higher in Lepomis, Esox, Ictalurus and Silurus than in Anguilla.
mesh_terms: D000818:Animals; D001835:Body Weight; D002397:Catfishes; D002851:Chromatography, High Pressure Liquid; D004284:Dogfish; D004524:Eels; D004912:Erythrocytes / Q000378:metabolism*; D005399:Fishes / Q000097:blood*; D006400:Hematocrit; D006454:Hemoglobins / Q000378:metabolism; D009711:Nucleotides / Q000097:blood*; D010471:Perches; D011687:Purines / Q000097:blood*; D012860:Skates, Fish; D013045:Species Specificity; D014337:Trout
chemical_list: D006454:Hemoglobins; D009711:Nucleotides; D011687:Purines