On page 344 of Signature in the Cell Meyer makes note of the interdependence of functionality existing in cells. The cellular relationships between DNA, ATP and proteins have sometimes been dubbed as the chicken-egg dilemma for origin of life explanations. Chicken-egg causal pathways are common to designed outcomes. They signal a logical point at which intelligent input can be indentified. But is a chicken-egg scenario compelling either for design or deniers of it? Meyer does more than leave the issue hanging.
The most highlighted approach to resolving the chicken-egg conundrum is probably the RNA world explanation. Its enzymatic and information storage properties are said to have been sufficient by proponents of the RNA world. The RNA world hypothesis has been much explored both at Telic Thoughts and within many other sites, papers and books.
Proteins are needed to synthesize DNA and DNA is needed for protein synthesis. ATP, the primary energy currency of cells, is itself synthesized in a process involving proteins. Breakthroughs are often commended with the benefit of hindsight for their simplicity and elegance. Now that a resolution is right in front of you it can be akin to a why was that not seen before reaction. That no doubt would be the reaction of RNA world proponents but a realistic assessment of the approach reveals that an attempt to explain away a chicken-egg dilemma requires that we back end an added dilemma namely, the need to explain a transition to a protein world i.e. the cellular dynamics we actually observe.
When analyzing the orign of life we find a chicken-egg puzzle within a chicken-egg. While this type of thing is not unique to the origin of life the second chicken-egg is central to the RNA world as well as a core theme in Meyer's book. The origin of stored information in nucleic acids is not explained by RNA's dual enzyme/storage roles. Natural selection requires specifiable criteria which do not necessarily coincide with the outcome one is attempting to demonstrate. Information storage and transmission entails a convention by which sequenced elements are defined. The orign of that convention must be plausibly included within a more encompassing process. That process involves more than citing chemical affinity between some amino acids and anticodons.
The information storage found in DNA is sequence dependent. Take the sequencing of a functional gene and scramble the order of its amino acid coding codons as well as the stop codon and function is lost. Function is lost because a once biologically meaningful sequence is made nonsense. Functional information is lost even as content and chemical bonding remain constant.
Explaining the origin of functional sequencing requires more than a hypothesis which includes both enzymatic and storage physical material. Functional information is a consequence of sequential order as much as it is content. It has inherently conceptual properties. Alphabet soups, like their prebiotic counterparts, are unordered with respect to sequencing. Your very material lunch soup is not free.