Complementary structures

WilD78 Wille, D. Enumeration of self-complementary structures. J. Comb. Theory B 25 (1978) 143-150. 

The cP4-AuCu3 type an example of the use of alternative and complementary structural notations and symbols... 

Determination of the structure of the entire rabbit heme-hemopexin complex (11) (Fig. 8) clearly revealed the expected complementary structures of the N- and C-domains. More importantly, several fundamental... 

Complementary structures of biological materials, especially those of proteins, often result in specific recognitions and various types of biological affinity. These include many pairs of substances, such as enzyme-inhibitor, enzyme-substrate (analog), enzyme-coenzyme, hormone-receptor, and antigen-antibody, as summarized in Table 11.2. Thus, bioaffinity represents a useful approach to separating specific biological materials. 

It is the combination of complementary structural information from NOE measurements together with the J-coupling information obtained from other experiments which makes NMR so successful. 

DNA forms a complementary structure of two helically oriented polynucleotide chains (fig. 1.13). The polar sugar and phosphate groups are situated on the surface, where they can interact with water the nitrogenous bases from the two chains form intermolecular hydrogen bonds in the core of the structure. 

The complementary structural information of both NMR spectroscopy and MS detection is particularly valuable for the analysis of closely related glycosidic natural products, where compounds of the same molecular mass (isobars, see Table 5.1.1), and even with identical MS/MS fragmentation patterns, frequently occur, as this example demonstrates. 

In the normal structure of DNA each strand is paired with another strand called the complementary strand because it has each base paired with its complementary base. When DNA replicates, the strands separate and a new strand with complementary structure grows alongside each. In this way the original1 double helix now becomes two identical double helices and so on. 

Combinatorial ligands Complementary structures Separate classes Cost stability specificity binding capacity... 

Swanson, D.R. 1991. Complementary structures in disjoint science literatures, in A. Bookstein et al. (Eds.), SIGIR91 Proceedings of the Fourteenth Annual International ACM/SIGIR Conference on Research and Development in Information Retrieval Chicago, Oct 13-16, 1991, pp. 280-289. New York Association for Computing Machinery. 

The case might occur in which the two complementary structures happened to be identical however, in this case also the stability of the complex of two molecules would be due to their complementariness rather than their identity. 

The detailed mechanism by means of which a gene or a virus molecule produces replicas of itself is not yet known. In general the use of a gene or a virus as a template would lead to the formation of a molecule not with identical structure but with complementary structure... If the structure that serves as a template (the gene or virus molecule) consists of, say, two parts, which are themselves complementary in structure, then each of these parts can serve as the mold for the production of a replica of the other part, and the complex of two complementary parts thus can serve as the mold for the production of duplicates itself. 

Crick FHC, Watson JD (1954) The complementary structure of deoxyribonucleic acid. Proc R Soc Lond Ser A223 80- 96... 

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