2bir: Difference between revisions
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==ADDITIVITY OF SUBSTRATE BINDING IN RIBONUCLEASE T1 (Y42A MUTANT)== | ==ADDITIVITY OF SUBSTRATE BINDING IN RIBONUCLEASE T1 (Y42A MUTANT)== | ||
<StructureSection load='2bir' size='340' side='right' caption='[[2bir]], [[Resolution|resolution]] 2.30Å' scene=''> | <StructureSection load='2bir' size='340' side='right'caption='[[2bir]], [[Resolution|resolution]] 2.30Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2bir]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspoz Aspoz]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BIR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BIR FirstGlance]. <br> | <table><tr><td colspan='2'>[[2bir]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspoz Aspoz]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BIR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BIR FirstGlance]. <br> | ||
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==See Also== | ==See Also== | ||
*[[Ribonuclease|Ribonuclease]] | *[[Ribonuclease 3D structures|Ribonuclease 3D structures]] | ||
*[[Temp|Temp]] | *[[Temp|Temp]] | ||
== References == | == References == | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Aspoz]] | [[Category: Aspoz]] | ||
[[Category: Large Structures]] | |||
[[Category: Doumen, J]] | [[Category: Doumen, J]] | ||
[[Category: Loverix, S]] | [[Category: Loverix, S]] | ||
Revision as of 10:52, 19 February 2020
ADDITIVITY OF SUBSTRATE BINDING IN RIBONUCLEASE T1 (Y42A MUTANT)ADDITIVITY OF SUBSTRATE BINDING IN RIBONUCLEASE T1 (Y42A MUTANT)
Structural highlights
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 PubMedIt has been established that Tyr-42, Tyr-45, and Glu-46 take part in a structural motif that renders guanine specificity to ribonuclease T1. We report on the impact of Tyr-42, Tyr-45, and Glu-46 substitutions on the guanine specificity of RNase T1. The Y42A and E46A mutations profoundly affect substrate binding. No such effect is observed for Y45A RNase T1. From the kinetics of the Y42A/Y45A and Y42A/E46A double mutants, we conclude that these pairs of residues contribute to guanine specificity in a mutually independent way. From our results, it appears that the energetic contribution of aromatic face-to-face stacking interactions may be significant if polycyclic molecules, such as guanine, are involved. Additivity of protein-guanine interactions in ribonuclease T1.,Loverix S, Doumen J, Steyaert J J Biol Chem. 1997 Apr 11;272(15):9635-9. PMID:9092491[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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