CD-n.m.r. study of the solution conformation of bradykinin analogs containing alpha-aminoisobutyric acid.
CD-n.m.r. study of the solution conformation of bradykinin analogs containing alpha-aminoisobutyric acid.
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CD-核磁共振
DOI:
10.1111/j.1399-3011.1987.tb02275.x
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发表时间:
1987
期刊:
影响因子:
--
通讯作者:
Stewart,JM
中科院分区:
文献类型:
--
作者:
Cann,JR;London,RE;Unkefer,CJ;Vavrek,RJ;Stewart,JM
The conformation in aqueous solution of several α‐aminoisobutyric acid (AIB)‐containing analogs of bradykinin (BK) has been probed by complementary CD and1H n.m.r. measurements. The conclusion reached is that substitution of AIB for Pro2and/or Pro3in BK stabilizes a degree of β‐turn conformation in theN‐terminal tetrapeptide moiety of the resulting analogs. Changing the solvent from water to DMSO or TFE further enhances the contribution of particular hydrogen bonded structures to the time‐averaged conformation of these peptides. Bradykinin and [AIB7]‐BK adopt similar hydrogen bonded conformations in TFE, apparently with a contribution from a β‐turn involving their common Arg1‐Pro2‐Pro3‐Gly4moiety. The contrasting biological activities of BK and its AIB‐analogs are considered in terms of the conformational analogy between the AIB‐residue andcis1Pro and the propensity for a β‐turn at theN‐terminus of the peptide.
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影响因子:
2.9
作者:
J. Cann;J. Stewart;R. London;N. Matwiyoff
通讯作者:
N. Matwiyoff
影响因子:
2.9
作者:
R. London;J. Stewart;J. Cann;N. Matwiyoff
通讯作者:
N. Matwiyoff
DOI:
10.1073/pnas.66.1.111
发表时间:
1970
影响因子:
11.1
作者:
D. Urry;M. Ohnishi;R. Walter
通讯作者:
R. Walter
影响因子:
3
作者:
R. Vavrek;J. Stewart
通讯作者:
J. Stewart
影响因子:
2
作者:
CHEN, GC;YANG, JT
通讯作者:
YANG, JT