Importance

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Abstract

PTH analogs comprising an amino acid sequence that is: SVSEIQLLHNX.sub.1 X.sub.2 X.sub.3 HX.sub.4 X.sub.3 X.sub.3 X.sub.3 X.sub.5 RVX.sub.5 WLR X.sub.4 X.sub.4 LX.sub.3 X.sub.3 VX.sub.1 X.sub.3 X.sub.3 X (SEQ ID NO:10) wherein X.sub.1 is a neutral or positively charged amino acid, X.sub.2 is a neutral amino acid, X.sub.3 is a neutral, positively charged, or negatively charged amino acid, X.sub.4 is a positively charged amino acid, X.sub.5 is a positively charged or negatively charged amino acid, and X is selected from the group consisting of Hol, Ho, a homoserine amide, or the sequence of amino acids comprising residues 35-84 of PTH, have enhanced activity and increased serum half-life as compared with human PTH. The PTH analogs can be produced as fusion proteins in high yields in E. coli host cells; the fusion proteins can be subsequently cleaved to produce the PTH analog.

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First Claim