2zae

Crystal structure of protein Ph1601p in complex with protein Ph1771p of archaeal ribonuclease P from Pyrococcus horikoshii OT3

spinqualitylabelsall models 2zae, resolution 2.21Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2zae is a 4 chain structure with sequence from Pyrococcus horikoshii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.21Å Ligands: GOL, NO3, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RNP1_PYRHO Part of ribonuclease P (RNase P), a protein complex that generates mature tRNA molecules by cleaving their 5'-ends. Binds RNase P RNA. 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 Ribonuclease P (RNase P) is a ribonucleoprotein complex involved in the processing of the 5'-leader sequence of precursor tRNA. Human RNase P protein subunits Rpp21 and Rpp29, which bind to each other, with catalytic RNA (H1 RNA) are sufficient for activating endonucleolytic cleavage of precursor tRNA. Here we have determined the crystal structure of the complex between the Pyrococcus horikoshii RNase P proteins PhoRpp21 and PhoRpp29, the archaeal homologs of Rpp21 and Rpp29, respectively. PhoRpp21 and PhoRpp29 form a heterodimeric structure where the two N-terminal helices (alpha1 and alpha2) in PhoRpp21 predominantly interact with the N-terminal extended structure, the beta-strand (beta2), and the C-terminal helix (alpha3) in PhoRpp29. The interface is dominated by hydrogen bonds and several salt bridges, rather than hydrophobic interactions. The electrostatic potential on the surface of the heterodimer shows a positively charged cluster on one face, suggesting a possible RNA-binding surface of the PhoRpp21-PhoRpp29 complex. The present structure, along with the result of a mutational analysis, suggests that heterodimerization between PhoRpp21 and PhoRpp29 plays an important role in the function of P. horikoshii RNase P. Structure of an archaeal homolog of the human protein complex Rpp21-Rpp29 that is a key core component for the assembly of active ribonuclease P.,Honda T, Kakuta Y, Kimura K, Saho J, Kimura M J Mol Biol. 2008 Dec 19;384(3):652-62. Epub 2008 Oct 2. PMID:18929577 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribonuclease 3D structures

Proteopedia Page Contributors and Editors (what is this?)

OCA