背景：PGA4 （Pepsinogen 4; group I）; or Pepsinogen A; is a member of the peptidase A1 family.
Pepsin is expressed as a pro-form zymogen; pepsinogen; whose primary structure has an additional 44 amino acids.
Pepsin is stored as pepsinogen so it will only be released when needed; and does not digest the body's own proteins in the stomach's lining.
Five types of zymogens of pepsins; gastric digestive proteinases; are known： pepsinogens A; B; and F; progastricsin; and prochymosin.
There are two major groups of pepsinogen; namely pepsinogen A （PGA） and pepsinogen C （PGC） （or progastricsin）; and each frequently has isozymogens.
The PGA3; PGA4 and PGA5 genes encode identical human pepsinogen A enzymes.
仕様
サイズ：50ug
種由来：Human
発現宿主：HEK293 Cells
純度：＞97 ％ as determined by reducing SDS-PAGE.
エンドトキシン濃度：＜1.0 EU per μg of the protein as determined by the LAL method.
アクセッションNo.：P00790
アミノ酸配列：Met 1-Ala 388
遺伝子構造：A DNA sequence encoding the human PGA4 （NP_001073276.1） （Met 1-Ala 388） was fused with a polyhistidine tag at the C-terminus.
別名（遺伝子名）：FLJ58952;FLJ77962;PGA3;PGA4;PGA5
分子量：41.7 kDa
組成：Lyophilized from sterile PBS; pH 7.4
保存条件：Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at ＜ -20℃ for 3 months.
