The crucial experiment is the crucial stage of research… The crucial experiment appears like a simple scheme, but it is the most delicate operation and the most difficult to set up - Etienne Wolff (1904-1996)

Ecach is intended for higher education and researchers in the field.  It uses UniProtKB as a source for functional information on Escherichia coli K12 proteins and RCSB Protein Data Bank [Warning] for biological macromolecular structures.  Some readers will find it helpful to read chapters consecutively as there is logic in their order.  Students worldwide are encouraged to ask questions or request additional information for further comprehension of the topic.

Ecach is supported by grant A-2006-00376 from the 'Reuben H. Fleet Foundation Fund' at 'The San Diego Foundation'.
Ecach has been linked to at EcoSal Links to Other Resources (since 2005) and at UniProtKB/Swiss-Prot P00936 CYAA_ECOLI.