| 释义 |
superˈhelical, a. Biochem.
[f. superhelix, after helical a.]
Belonging to or consisting of a superhelix.
1966Jrnl. Gen. Physiol. XXXXIX. 125, I wonder whether you would explain again how you calculated the number of superhelical turns. 1974Nature 5 Apr. 476/3 The superhelical structure imposes upon the DNA molecule a topological restraint. 1980Sci. Amer. July 108/1 It is possible to gain a general understanding of how a left-handed superhelical coil..is transformed into a right-handed interwound superhelix by considering the linking number.
Hence superˈhelically adv.; also ˌsuperheˈlicity, the state of being superhelical.
1974Nature 20 Sept. 248/2 The affinity of the repressor for the operator..increases with increasing negative superhelicity up to a factor of approximately 14 for the DNA with -160 superhelical turns. 1978Ibid. 12 Jan. 118/2 Superhelically wound oligonucleosome fibres. 1980A. Kornberg DNA Replication i. 25 Supertwisting, supercoiling, and superhelicity are terms for the twisting upon itself of the duplex DNA strands. |