1uhb | pdb_00001uhb

Crystal structure of porcine alpha trypsin bound with auto catalyticaly produced native peptide at 2.15 A resolution

spinqualitylabelsall models 1uhb, resolution 2.15Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1uhb is a 3 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACT, CA Related: 1qqu Activity: Trypsin, with EC number 3.4.21.4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Trypsin, a serine protease enzyme plays a pivotal role in digestion and is autocatalytic. The crystal structure of a complex formed between porcine trypsin and an auto catalytically produced peptide is reported here. This complex shows a reduction in enzyme activity as compared to native beta-trypsin. The nonapeptide has a lysine, which is recognized by Asp 189 at the specificity pocket. The auto catalytically produced native nonapeptide is bound at the active site cleft like other trypsin inhibitors but the important interactions with the oxyanion hole are absent. The peptide covers only a part of the active site cleft and hence the enzyme activity is reduced rather than being inhibited. Trypsin activity reduced by an autocatalytically produced nonapeptide.,Ibrahim BS, Shamaladevi N, Pattabhi V J Biomol Struct Dyn. 2004 Jun;21(6):737-44. PMID:15106996 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Trypsin

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