Anti-Pepsinogen I (Pepsinogen I, PG I, Zymogen of pepsin CAS#: 9001-10-9) antibody

AntigenDescriptionProperties
Safety InformationImagesOther Info

Antigen

NamePepsinogen I (PG I)
SynonymsPG I; pepsin; 9001-10-9; Pepsinogen
SequenceIMYKVPLIRK KSLRRTLSER GLLKDFLKKH NLNPARKYFP QWEAPTLVDE QPLENYLDME YFGTIGIGTP AQDFTVVFDT GSSNLWVPSV YCSSLACTNH NRFNPEDSST YQSTSETVSI TYGTGSMTGI LGYDTVQVGG ISDTNQIFGL SETEPGSFLY YAPFDGILGL AYPSISSSGA TPVFDNIWNQ GLVSQDLFSV YLSADDQSGS VVIFGGIDSS YYTGSLNWVP VTVEGYWQIT VDSITMNGEA IACAEGCQAI VDTGTSLLTG PTSPIANIQS DIGASENSDG DMVVSCSAIS SLPDIVFTIN GVQYPVPPSA YILQSEGSCI SGFQGMNLPT ESGELWILGD VFIRQYFTVF DRANNQVGLA PVAHHHHHH

Description

NameAnti-Pepsinogen I antibody
SynonymsAnti-PG I antibody; Pepsinogen I antibody; PG I antibody
HostMouse; Goat; Rabbit
ReactivityAll species
Antibody Product Type  Primary
UseDetection; Capture
Conjugate Unconjugated; Biotin; APC; Alkaline Phosphatase (AP); FITC; HRP; PE
SpecifityRecognizes Pepsinogen I. Does not cross-react with human Pepsinogen II.
ApplicationELISA; Immunohistochemistry (IHC); Western Blotting (WB); Immunofluorescence (fixed cells) (IF/ICC); Immunoprecipitation (IP); Cell-ELISA (cELISA); Immunoassay (IA); Immunocytochemistry (ICC)

Properties

FormLiquid/Lyophilized
HandlingThe antibody solution should be gently mixed before use.
Storage ConditionStore at 4°C for frequent use. Stored at -20°C in a manual defrost freezer for a year without detectable loss of activity. Avoid repeated freeze-thaw cycles.
ClonalityMonoclonal/Polyclonal
IsotypeIgG

Safety Information

RIDADRNONH for all modes of transport
Flash Point(F) Not applicable
Flash Point(C) Not applicable

Images

ELISAPepsinogen I Elisa
SDS-page and WBPepsinogen I SDS-page and WB

Other Info

About the antigenPepsinogen I belongs to the peptidase A1 family. It shows particularly broad specificity and although bonds involving phenylalanine and leucine are preferred, many others are also cleaved to some extent. The gene endoces a 388 amino acid protein with a 15 amino acid signal peptide and 46 amino acid propeptide.  PGA5: Pepsinogen 5, group I (pepsinogen A). Pepsinogens are the inactive precursors of pepsin, the major acid protease found in the stomach. Pepsin is one of the main proteolytic enzymes secreted by the gastric mucosa. Pepsin consists of a single polypeptide chain and arises from its precursor, pepsinogen, by removal of a 41 amino acid segment from the N-terminus. Pepsinogen is synthesized in the stomach lining, and hydrochloric acid, also produced by the gastric mucosa, is necessary to convert the inactive enzyme and to maintain the optimum acidity (pH 1-3) for pepsin function. Pepsin is particularly effective in cleaving peptide bonds involving aromatic amino acids. Pepsin shows extremely broad specificity; although bonds involving phenylalanine and leucine are preferred, many others are also cleaved to some extent. PGA5 is a member of the subfamily A1 within the pepsin family and is the predominant endopeptidase in the gastric juice of vertebrates. PGA5 is inhibited by ovUS-1, a uterine serpin.
More InformationPepsinogen I, the precursors of pepsin, is produced by the gastric mucosa and released into the gastric lumen and peripheral circulation. Pepsinogen consists of a single polypeptide chain of 375 amino acids with an average molecular weight of 42 kD. PG I (isoenzyme 1-5) is secreted mainly by chief cells in the fundic mucosa, whereas PG II (isoenzyme 6-7) is secreted by the pyloric glands and the proximal duodenal mucosa.
Precursor reflects numbers of stomach surface cells as well as glandular cells, and monitors gastric atrophy indirectly. They are also extraordinarily stable because they perform their jobs under the harsh conditions present in the digestive system. The atrophy of the corpus mucosa leads to low synthesis of pepsinogen I and hence its low release into the serum. Serum pepsinogen I indicates function and states of gastric mucosa.
pepsinogen1

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