SOLUTION NMR STRUCTURE OF LIPOPROTEIN SPR FROM ESCHERICHIA COLI K12. NORTHEAST STRUCTURAL GENOMICS TARGET ER541-37-162 2K1G LIPOPROTEIN, SOLUTION NMR STRUCTURE, BACTERIAL LIPOPROTEIN, CYSTEINE PEPTIDASE, NPLC/P60 FAMILY, CONSTRUCT OPTIMIZED, MEMBRANE, PALMITATE, STRUCTURAL GENOMICS, PSI-2, PROTEIN STRUCTURE INITIATIVE, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM, NESG