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1gcb

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Revision as of 08:29, 23 October 2019

GAL6, YEAST BLEOMYCIN HYDROLASE DNA-BINDING PROTEASE (THIOL)

Structural highlights

1gcb is a 1 chain structure with sequence from Atcc 18824. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BLH1_YEAST] The normal physiological role of the enzyme is unknown, but it is not essential for the viability of yeast cells. Has aminopeptidase activity, shortening substrate peptides sequentially by 1 amino acid. Has bleomycin hydrolase activity, which can protect the cell from the toxic effects of bleomycin. Has homocysteine-thiolactonase activity, protecting the cell against homocysteine toxicity. Acts as a repressor in the GAL4 regulatory system, but this does not require either the peptidase or nucleic acid-binding activities.^[1] ^[2]

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

Bleomycin hydrolase is a cysteine protease that hydrolyzes the anticancer drug bleomycin. The homolog in yeast, Gal6, has recently been identified and found to bind DNA and to act as a repressor in the Gal4 regulatory system. The crystal structure of Gal6 at 2.2 A resolution reveals a hexameric structure with a prominent central channel. The papain-like active sites are situated within the central channel, in a manner resembling the organization of active sites in the proteasome. The Gal6 channel is lined with 60 lysine residues from the six subunits, suggesting a role in DNA binding. The carboxyl-terminal arm of Gal6 extends into the active site cleft and may serve a regulatory function. Rather than each residing in distinct, separable domains, the protease and DNA-binding activities appear structurally intertwined in the hexamer, implying a coupling of these two activities.

Crystal structure of a conserved protease that binds DNA: the bleomycin hydrolase, Gal6.,Joshua-Tor L, Xu HE, Johnston SA, Rees DC Science. 1995 Aug 18;269(5226):945-50. PMID:7638617^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Wang H, Ramotar D. Cellular resistance to bleomycin in Saccharomyces cerevisiae is not affected by changes in bleomycin hydrolase levels. Biochem Cell Biol. 2002;80(6):789-96. PMID:12555812
↑ Zimny J, Sikora M, Guranowski A, Jakubowski H. Protective mechanisms against homocysteine toxicity: the role of bleomycin hydrolase. J Biol Chem. 2006 Aug 11;281(32):22485-92. Epub 2006 Jun 12. PMID:16769724 doi:http://dx.doi.org/M603656200
↑ Joshua-Tor L, Xu HE, Johnston SA, Rees DC. Crystal structure of a conserved protease that binds DNA: the bleomycin hydrolase, Gal6. Science. 1995 Aug 18;269(5226):945-50. PMID:7638617

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1gcb"

@@ Line 1: / Line 1: @@
 ==GAL6, YEAST BLEOMYCIN HYDROLASE DNA-BINDING PROTEASE (THIOL)==
-<StructureSection load='1gcb' size='340' side='right' caption='[[1gcb]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
+<StructureSection load='1gcb' size='340' side='right'caption='[[1gcb]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1gcb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GCB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GCB FirstGlance]. <br>
@@ Line 33: / Line 33: @@
 </StructureSection>
 [[Category: Atcc 18824]]
+[[Category: Large Structures]]
 [[Category: Johnston, S A]]
 [[Category: Joshua-Tor, L]]

1gcb

From Proteopedia

Revision as of 08:29, 23 October 2019

GAL6, YEAST BLEOMYCIN HYDROLASE DNA-BINDING PROTEASE (THIOL)

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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