Detailed Peptide Information


This page shows detailed information of individual peptides present in PlantPepDB database. The page is majorly divided into 3 sections. The first sections contains primary information like peptide activity, source, sequence, etc. In the secondary information section user can access the tertiary structure as well as the physico-chemical properties by clicking the respective links. Further there is also link of the source database and research article from which the peptide data is retrieved. Download the information by clicking



Primary Information
PPepDB IDPPepDB_5821
Peptide NameAPI1_SOLTU
PMID(s)--NA--
Plant Source (Scientific Name)Solanum tuberosum
Plant Source (Common Name)Potato
Plant FamilySolanaceae
Peptide Family--NA--
Peptide FunctionSignaling-peptide
Peptide Function DescriptionAspartic protease inhibitor; Direct protein sequencing; Glycoprotein; Protease inhibitor; Serine protease inhibitor; Signal; Vacuole | Aspartic protease inhibitor 1 precursor (pA1) (gCDI-A1) (STPIA),(STPID).Vacuole (By similarity).
Activity Against--NA--
IC50 value--NA--
SequenceIGKADSSYFKIVKSSKFGYNLLYCPITRPPIVCPFCRDDDFCAKVGVVIQIPLSTNIFEDQLLNIQFNIPTVKLCVSYTIWKVGNLNTHLWTMLLETGGTMMKCLFFLCLCLFPILVFSSTFTSQNPINLPSESPVPKPVLDTNGKKLNPNGKRRLALVNENPLDVLFQEVNSSYRIISTFWGALGGDVYLGKSPNSDAPCPDGVFRYNSDVGPSGTPVRF
Sequence Length221
ValidationExperimental evidence at protein level
Average Molecular Weight (Da)24545.55
Monoisotopic Molecular Weight (Da)24529.54
Isoelectric Point (pI)8.56
Method / Extraction--NA--


Secondary Information
Tertiary Structure and DSSP ReportClick to View Structure
Physico-Chemical Properties of peptidesClick to View Physico-Chemical Details of PPepDB_5821


External links (Uniprot, PDB and Source Information Database)
UniprotQ41480
NCBI--NA--
EMBLD17328
Link to Source DatabasesSPdb10785
Addtional InformationFUNCTION:Inhibitor of cathepsin D (aspartic protease). May also inhibit trypsin and chymotrypsin (serine proteases). Protects the plant by inhibiting proteases of invading organisms.TISSUE SPECIFICITY:Tubers, young leaves and flower bud. Not detected in root, stem or mature leaves.INDUCTION:By methyl jasmonate and wounding; but not by sucrose.MISCELLANEOUS:Has a single chain structure.SIMILARITY:Belongs to the protease inhibitor I3 (leguminous Kunitz-type inhibitor) family.