Abstract:
:Studies were undertaken on the heat denaturation and proteolytic degradation by alpha-chymotrypsin of the normal red cell carbonic anhydrase isozyme, CA II, and two electrophoretic variants of carbonic anhydrase I, CA Ia and CA Ib, of the pigtail macaque. The heat degradation results showed a difference of about 40-fold in the rate constants between CA Ia and CA Ib, which is due to the marked thermostability of CA Ib compared to CA Ia. The enthalpies and entropies of activation were calculated from the heat denaturation constants. These values were compared, on enthalpy-entropy compensation plots, with those values previously determined for the human CA I and CA II isozymes. They were highly correlated and clearly fell into two distinct clusters, separated by about 200 kJ mol-1; one group comprising the macaque and human CA I isozymes and the other the CA II isozymes. The proteolytic degradation results showed that CA Ia is degraded about 2.5 times more rapidly than CA Ib by alpha-chymotrypsin. Thus, the characteristic 3/1 ratio of CA Ib/CA Ia in mature red cells could be accounted for by the greater susceptibility of CA Ia to degradation at some stage in red cell development.
journal_name
Arch Biochem Biophysjournal_title
Archives of biochemistry and biophysicsauthors
Osborne WR,Tashian REdoi
10.1016/0003-9861(84)90103-6subject
Has Abstractpub_date
1984-04-01 00:00:00pages
222-6issue
1eissn
0003-9861issn
1096-0384pii
0003-9861(84)90103-6journal_volume
230pub_type
杂志文章abstract::7-Chloro-4-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) is a specific covalent inhibitor of P-glycoprotein ATPase activity (M. K. Al-Shawi, and A. E. Senior, 1993, J. Biol. Chem. 268, 4197-4206). Complete inhibition occurs at a reaction stoichiometry of 1 mol NBD/mol P-glycoprotein, and the reagent has proved valuable in und...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0778
更新日期:1998-09-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90742-3
更新日期:1986-11-01 00:00:00
abstract::A human, 85-kDa arachidonoyl-specific, cytosolic phospholipase A2 was expressed using the baculovirus-insect cell expression system. Expression resulted in the production of an active protein which consisted of approximately 3% of the total protein in the host Spodoptera frugiperda (Sf9) cells at 67 h after infection....
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1993.1549
更新日期:1993-11-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2010.04.001
更新日期:2010-06-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90628-3
更新日期:1984-08-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2011.10.001
更新日期:2011-12-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1801
更新日期:2000-06-01 00:00:00
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pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0654
更新日期:1998-05-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1996.0072
更新日期:1996-02-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90743-5
更新日期:1986-11-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2020.108675
更新日期:2020-12-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90494-1
更新日期:1985-10-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90607-7
更新日期:1986-02-01 00:00:00
abstract::The purpose of the current study is to present further evidence for prothrombin self-association as assessed by chemical crosslinking. When the self-association (evaluated by covalent crosslinking with dithiobis(succinimidylpropionate) of prothrombin or fragment 1 was evaluated at the same molar concentration of prote...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(87)90588-1
更新日期:1987-09-01 00:00:00
abstract::Complete primary structures of five allergenically active oligosaccharitols (HPG-beta 2-N5a, -N6, -N7a, -N7b, and -N9) derived from a sea squirt H-antigen were studied. Structural characterization was carried out by a new method in which products of limited periodate oxidation, followed by derivatization with p-aminob...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(91)90569-5
更新日期:1991-11-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(85)90674-5
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pub_type: 杂志文章
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更新日期:2014-09-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90083-3
更新日期:1984-04-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90625-8
更新日期:1984-08-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(92)90726-d
更新日期:1992-05-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2007.06.032
更新日期:2007-09-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.2000.1794
更新日期:2000-05-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2011.03.004
更新日期:2011-05-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1006/abbi.1998.0740
更新日期:1998-07-15 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(86)90411-x
更新日期:1986-07-01 00:00:00
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journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/j.abb.2013.03.012
更新日期:2013-07-15 00:00:00
abstract::The Mr 245,000 calmodulin-binding protein of the dogfish erythrocyte cytoskeleton (D245) has been compared with human erythrocyte spectrin and mammalian brain fodrin [J. Levine and M. Willard (1981) J. Cell Biol. 90, 631-643]. Mammalian erythrocyte alpha-spectrin, brain alpha-fodrin, and D245 are all localized in the ...
journal_title:Archives of biochemistry and biophysics
pub_type: 杂志文章
doi:10.1016/0003-9861(84)90081-x
更新日期:1984-04-01 00:00:00