5c98

1.45A resolution structure of SRPN18 from Anopheles gambiae

spinqualitylabelsall models 5c98, resolution 1.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5c98 is a 2 chain structure with sequence from Anoga. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: SRPN18, AgaP_AGAP007691 (ANOGA) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Serine protease inhibitors (serpins) in insects function within development, wound healing and immunity. The genome of the African malaria vector, Anopheles gambiae, encodes 23 distinct serpin proteins, several of which are implicated in disease-relevant physiological responses. A. gambiae serpin 18 (SRPN18) was previously categorized as non-inhibitory based on the sequence of its reactive-center loop (RCL), a region responsible for targeting and initiating protease inhibition. The crystal structure of A. gambiae SRPN18 was determined to a resolution of 1.45 A, including nearly the entire RCL in one of the two molecules in the asymmetric unit. The structure reveals that the SRPN18 RCL is extremely short and constricted, a feature associated with noncanonical inhibitors or non-inhibitory serpin superfamily members. Furthermore, the SRPN18 RCL does not contain a suitable protease target site and contains a large number of prolines. The SRPN18 structure therefore reveals a unique RCL architecture among the highly conserved serpin fold. 1.45 A resolution structure of SRPN18 from the malaria vector Anopheles gambiae.,Meekins DA, Zhang X, Battaile KP, Lovell S, Michel K Acta Crystallogr F Struct Biol Commun. 2016 Dec 1;72(Pt 12):853-862. Epub 2016, Nov 19. PMID:27917832 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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