10         20         30         40         50         60 
MRGSHHHHHH GSNANPNANP NANPNANPNA NPNANPNANP NANPNANPNA NPNANPNANP 

        70         80         90        100        110        120 
NANPNANPNA NPNANPNANP NANPNANPRS MDAEFRHDSG YEVHHQKLVF FAEDVGSNKG 

       130 
AIIGLLVGGV VIA

Parameters computed by ExPASy Protparam:

Number of amino acids: 133
Molecular weight: 13800.6
Theoretical pI: 6.74

Ext. coefficient: 1490 M^-1 cm^-1, at 280 nm

Full sequence without the numbering:

MRGSHHHHHHGSNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPRSMDAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLLVGGVVIA'

This is the non-Abeta leader from the above sequence:

MRGSHHHHHHGSNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPNANPRSM

These are 19 NANP repeats.

See: Proc Natl Acad Sci U S A. 2005 Nov 29;102(48):17342-7.