1pyl Summary

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Crystal structure of Ribonuclease Sa2

The structure was published by Sevcik, J., Dauter, Z., and Wilson, K.S., in 2004 in a paper entitled "Crystal structure reveals two alternative conformations in the active site of ribonuclease Sa2." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 1.507 Å and deposited in 2003.

The experimental data on which the structure is based was also deposited.

This PDB entry contains multiple copies of the structure of ribonuclease.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule has more than one probable quaternary state observed. For more details see the quaternary structure page.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A ribonuclease Q53752 (67-163) (Q53752_STRAU)search Streptomyces aureofacienssearch < 90% 97 98%
B ribonuclease Q53752 (67-163) (Q53752_STRAU)search Streptomyces aureofacienssearch < 90% 97 98%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
Q53752 (67 - 163) ribonuclease Streptomyces aureofaciens

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A, B Bacterial ribonucleasessearch Nuclear Transport Factor 2; Chain: A,search ribonucleasesearch

Chain ID Molecular function (GO)
A, B (Q53752) RNA bindingsearch endoribonuclease activitysearch ribonuclease activitysearch

Chain InterPro annotation
A, B Guanine-specific ribonuclease N1/T1search Ribonuclease/ribotoxinsearch