XPNPEP1 also known as Xaa-Pro aminopeptidase 1 isoform 1, is encodes the cytosolic form of a metalloaminopeptidase that catalyzes the cleavage of the N-terminal amino acid adjacent to a proline residue. This product may play a role in degradation and maturation of tachykinins, neuropeptides, and peptide hormones. Source: Recombinant protein corresponding to aa1-623 of human XPNPEP1, fused to His-tag at N-terminal expressed in E. coli. Molecular Weight: ~73.4kD Amino Acid Sequence: MGSSHHHHHH SSGLVPRGSH MGSEFELRRQ ASMPPKVTSE LLRQLRQAMR NSEYVTEPIQ AYIIPSGDAH QSEYIAPCDC RRAFVSGFDG SAGTAIITEE HAAMWTDGRY FLQAAKQMDS NWTLMKMGLK DTPTQEDWLV SVLPEGSRVG VDPLIIPTDY WKKMAKVLRS AGHHLIPVKE NLVDKIWTDR PERPCKPLLT LGLDYTGISW KDKVADLRLK MAERNVMWFV VTALDEIAWL FNLRGSDVEH NPVFFSYAII GLETIMLFID GDRIDAPSVK EHLLLDLGLE AEYRIQVHPY KSILSELKAL CADLSPREKV WVSDKASYAV SETIPKDHRC CMPYTPICIA KAVKNSAESE GMRRAHIKDA VALCELFNWL EKEVPKGGVT EISAADKAEE FRRQQADFVD LSFPTISSTG PNGAIIHYAP VPETNRTLSL DEVYLIDSGA QYKDGTTDVT RTMHFGTPTA YEKECFTYVL KGHIAVSAAV FPTGTKGHLL DSFARSALWD SGLDYLHGTG HGVGSFLNVH EGPCGISYKT FSDEPLEAGM IVTDEPGYYE DGAFGIRIEN VVLVVPVKTK YNFNNRGSLT FEPLTLVPIQ TKMIDVDSLT DKECDWLNNY HLTCRDVIGK ELQKQGRQEA LEWLIRETQP ISKQH Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.