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Homology modeling of rho-crystallin from bullfrog (Rana catesbeiana) lens.
J Mol Graph Model
March 2004
Department of Biochemistry, University of Karachi, Karachi 75270, Pakistan.
rho-Crystallins are major protein component found in the eye lenses of frogs of the genus Rana. Structural analysis has indicated that frog rho-crystallins belong to aldo-keto reductase superfamily (AKRs) which include aldehyde and aldose reductases, prostaglandin F synthase and several detoxification enzymes. Members of AKRs catalyze the oxidation-reduction reaction over a range of substrates using NAD(P)(H) as a cofactor.
View Article and Find Full Text PDFTaxon-specific zeta -crystallin in Japanese tree frog (Hyla japonica) lens.
J Biol Chem
July 2001
Department of Chemistry, Faculty of Medicine, Fukui Medical University, 23-3 Shimoaizuki, Matsuoka, Fukui 910-1193, USA.
The present study demonstrated that the 38-kDa protein, instead of rho-crystallin (36 kDa), is expressed taxon specifically in the lens of Japanese tree frog (Hyla japonica). The 38-kDa protein was distinguished from rho-crystallin expressed in the lenses of bullfrog (Rana catesbeiana) and European common frog (Rana temporaria) immunochemically. Although the N terminus of the 38-kDa protein was blocked, the analyses of partial amino acid sequences showed that the protein was zeta-crystallin.
View Article and Find Full Text PDFSequence analysis of frog rho-crystallin by cDNA cloning and sequencing: a member of the aldo-keto reductase family.
Biochem Biophys Res Commun
September 1995
Laboratory of Crystallin Research, National Taiwan University, Taipei.
rho-Crystallin is a major enzyme crystallin present in the lenses of amphibian species with a blocked amino terminus. In order to facilitate the determination of the primary sequence of this taxon-specific crystallin, cDNA mixture was synthesized from the poly(A)+mRNA of bullfrog eye lenses. cDNAs encoding rho-crystallin were then amplified by polymerase chain reaction (PCR) using a new protocol of Rapid Amplification of cDNA Ends (RACE).
View Article and Find Full Text PDFThe purpose of this study was to analyze immunochemically the synthesis and distribution of tissue-specific proteins, i.e., alpha-, beta- gamma- and rho-crystallins, in morphologically distinct regions of the frog (Rana temporaria L.
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