Structure of the Escherichia coli phosphonate binding protein PhnD and rationally optimized phosphonate biosensors.

The phnD gene of Escherichia coli encodes the periplasmic binding protein of the phosphonate (Pn) uptake and utilization pathway. We have crystallized and determined structures of E. coli PhnD (EcPhnD) in the absence of ligand and in complex with the environmentally abundant 2-aminoethylphosphonate (2AEP).

[The biopsychosocial profile of juvenile delinquents referred to a mental health clinic].

This study consists of a record review of the juvenile delinquents admitted to a state child and adolescent mental health clinic in Puerto Rico during 1987. The review was done using as reference models the basic findings of other researchers in Puerto Rico and the United States and mainly of those of Dorothy Lewis. The purpose of the study was to describe the bio-psychosocial profile of the juvenile delinquents admitted to this clinic.