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Volumn 19, Issue 20, 2009, Pages 5825-5828

The proteoglycan region of the tumor-associated carbonic anhydrase isoform IX acts as anintrinsic buffer optimizing CO2 hydration at acidic pH values characteristic of solid tumors

Author keywords

Carbonic anhydrase; CO2 hydration; Hypoxia; Isozymes I, II, IX, XII, XIV; pH dependency; pKa; Solid tumor; Tumor acidification

Indexed keywords

CARBON DIOXIDE; CARBONATE DEHYDRATASE II; CARBONATE DEHYDRATASE IX; CARBONATE DEHYDRATASE XII; PROTEOGLYCAN;

EID: 70349199011     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2009.08.088     Document Type: Article
Times cited : (66)

References (28)
  • 4
    • 5144224910 scopus 로고    scopus 로고
    • Development of Sulfonamide Carbonic Anhydrase Inhibitors
    • Supuran C.T., Scozzafava A., and Conway J. (Eds), CRC Press, Boca Raton
    • Supuran C.T., Scozzafava A., and Casini A. Development of Sulfonamide Carbonic Anhydrase Inhibitors. In: Supuran C.T., Scozzafava A., and Conway J. (Eds). Carbonic Anhydrase-Its Inhibitors and Activators (2004), CRC Press, Boca Raton 67-147
    • (2004) Carbonic Anhydrase-Its Inhibitors and Activators , pp. 67-147
    • Supuran, C.T.1    Scozzafava, A.2    Casini, A.3
  • 27
    • 0015239422 scopus 로고    scopus 로고
    • Khalifah, R. G. J. Biol. Chem. 1971, 246, 2561. An SX.18MV-R Applied Photophysics (Oxford, UK) stopped-flow instrument has been used to assay the catalytic/inhibition of various CA isozymes. Phenol Red (at a concentration of 0.2 mM) has been used as indicator, working at the absorbance maximum of 557 nm, with 10 mM Hepes (pH 7.4) as buffer, 0.1 M Na2SO4 or NaClO4 (for maintaining constant the ionic strength; these anions are not inhibitory in the used concentration),7,8 following the CA-catalyzed CO2 hydration reaction for a period of 5-10 s. Saturated CO2 solutions in water at 25 °C were used as substrate. Triplicate experiments were done for each enzyme, and the values reported throughout the paper are the mean of such results. For obtaining the pH dependency, the following buffer/indicator pairs were used: pH 6.0, Mes, methyl red, working at 433 nM; pH 6.2 and 6.5, Mes, chlorophenol red, working at 574 nM; pH 6.8
    • 4,6,8


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.