The relationship between carbonic anhydrase activity and glycolate excretion in the blue-green alga Coccochloris peniocystis

Planta ◽  
1976 ◽  
Vol 128 (3) ◽  
pp. 217-223 ◽  
Author(s):  
R. K. Ingle ◽  
Brian Colman
Keyword(s):  
Carbonic Anhydrase ◽  
Green Alga ◽  
Carbonic Anhydrase Activity ◽  
Blue Green Alga ◽  
The Relationship

scholarly journals THE RELATIONSHIP BETWEEN CARBONIC ANHYDRASE ACTIVITY AND ZINC CONTENT OF ERYTHROCYTES IN NORMAL, IN ANEMIC AND OTHER PATHOLOGIC CONDITIONS

Blood ◽  
1949 ◽  
Vol 4 (5) ◽  
pp. 467-478 ◽  
Author(s):  
BERT L. VALLEE ◽  
HERBERT D. LEWIS ◽  
MARK D. ALTSCHULE ◽  
JOHN G. GIBSON
Keyword(s):  
Carbonic Anhydrase ◽  
Red Blood Cells ◽  
Pernicious Anemia ◽  
Blood Cells ◽  
Zinc Concentration ◽  
Zinc Content ◽  
Carbonic Anhydrase Activity ◽  
Almost All ◽  
The Relationship ◽  
Parallel Fashion

Abstract A good correlation exists between zinc content and carbonic anhydrase activity of the red blood cells under all conditions studied, including anemia and polycythemia. In almost all patients with anemias other than pernicious anemia, both zinc and carbonic anhydrase levels were lowered in parallel fashion. These changes were proportional to decreases in hematocrit and hemoglobin levels and erythrocyte counts so that both zinc and carbonic anhydrase values per unit of RBC were in the normal range. In a few instances of anemia associated with leukemia and in one of sickle cell anemia, neither zinc content nor carbonic anhydrase activity was decreased in proportion to the anemia; in these cases the zinc and carbonic anhydrase levels per unit of blood were both elevated to the same degree. Patients with pernicious anemia showed no decrease in absolute values for zinc and carbonic anhydrase activity in spite of marked lowering of hematocrit and hemoglobin levels and of erythrocyte count. Accordingly, both zinc concentration and carbonic anhydrase activity per unit of blood were elevated, often to a marked degree. These increases were parallel, varying inversely with the degree of anemia; when they regressed under treatment, both did so at the same rate. There are no methods available for estimating carbonic anhydrase concentration; all methods now in use measure only the activity of the enzyme. It is suggested that zinc concentration could be used as an indicator of carbonic anhydrase content of the red blood cells.

Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

1981 ◽  
Vol 39 ◽  
pp. 410-411
Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens
Keyword(s):  
Growth Medium ◽  
Green Alga ◽  
Natural Habitat ◽  
Iron Limitation ◽  
Natural Environments ◽  
Blue Green Alga ◽  
Marine Cyanobacterium ◽  
Natural Systems ◽  
Thin Sectioning ◽  
Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

1123: Renal Oxalate Transport Depends on Local Carbonic Anhydrase Activity in the Proximal Tubule

2004 ◽  
Vol 171 (4S) ◽  
pp. 296-296
Author(s):  
Michael Straub ◽  
Joséphine Befolo-Elo ◽  
Richard E Hautmann ◽  
Edgar Braendle
Keyword(s):  
Carbonic Anhydrase ◽  
Proximal Tubule ◽  
Carbonic Anhydrase Activity ◽  
Oxalate Transport

Effects of amino acids on the blue-green alga (cyanobacteria) Tolypothrix scytonemoides (Gardner) Geitler

2006 ◽  
Vol 8 (3) ◽  
pp. 286-293
Author(s):  
Uma Maheshwari Rajendran ◽  
Elango Kathirvel ◽  
Anand Narayanaswamy
Keyword(s):  
Amino Acids ◽  
Green Alga ◽  
Blue Green Alga

Hill activity in cell-free preparations of a blue-green alga

1964 ◽  
Vol 88 (1) ◽  
pp. 11-19
Author(s):  
Walter A. Susor ◽  
David W. Krogmann
Keyword(s):  
Green Alga ◽  
Blue Green Alga ◽  
Hill Activity

scholarly journals Carbonic anhydrase activity in mitochondria from rat liver.

1982 ◽  
Vol 257 (12) ◽  
pp. 6850-6855
Author(s):  
S H Vincent ◽  
D N Silverman
Keyword(s):  
Carbonic Anhydrase ◽  
Rat Liver ◽  
Carbonic Anhydrase Activity
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