This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2bmb

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Current revision

X-ray structure of the bifunctional 6-hydroxymethyl-7,8- dihydroxypterin pyrophosphokinase dihydropteroate synthase from Saccharomyces cerevisiae

Structural highlights

2bmb is a 1 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.3Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FOL1_YEAST Catalyzes three sequential steps of tetrahydrofolate biosynthesis.^[1]

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

In Saccharomyces cerevisiae and other fungi, the enzymes dihydroneopterin aldolase, 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK) and dihydropteroate synthase (DHPS) are encoded by a polycistronic gene that is translated into a single polypeptide having all three functions. These enzymatic functions are essential to both prokaryotes and lower eukaryotes, and catalyse sequential reactions in folate biosynthesis. Deletion or disruption of either function leads to cell death. These enzymes are absent from mammals and thus make ideal antimicrobial targets. DHPS is currently the target of antifolate therapy for a number of infectious diseases, and its activity is inhibited by sulfonamides and sulfones. These drugs are typically used as part of a synergistic cocktail with the 2,4-diaminopyrimidines that inhibit dihydrofolate reductase. A gene encoding the S.cerevisiae HPPK and DHPS enzymes has been cloned and expressed in Escherichia coli. A complex of the purified bifunctional polypeptide with a pterin monophosphate substrate analogue has been crystallized, and its structure solved by molecular replacement and refined to 2.3A resolution. The polypeptide consists of two structural domains, each of which closely resembles its respective monofunctional bacterial HPPK and DHPS counterpart. The mode of ligand binding is similar to that observed in the bacterial enzymes. The association between the domains within the polypeptide as well as the quaternary association of the polypeptide via its constituent DHPS domains provide insight into the assembly of the trifunctional enzyme in S.cerevisiae and probably other fungal species.

The three-dimensional structure of the bifunctional 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase/dihydropteroate synthase of Saccharomyces cerevisiae.,Lawrence MC, Iliades P, Fernley RT, Berglez J, Pilling PA, Macreadie IG J Mol Biol. 2005 May 6;348(3):655-70. PMID:15826662^[2]

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

References

↑ Güldener U, Koehler GJ, Haussmann C, Bacher A, Kricke J, Becher D, Hegemann JH. Characterization of the Saccharomyces cerevisiae Fol1 protein: starvation for C1 carrier induces pseudohyphal growth. Mol Biol Cell. 2004 Aug;15(8):3811-28. PMID:15169867 doi:10.1091/mbc.e03-09-0680
↑ Lawrence MC, Iliades P, Fernley RT, Berglez J, Pilling PA, Macreadie IG. The three-dimensional structure of the bifunctional 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase/dihydropteroate synthase of Saccharomyces cerevisiae. J Mol Biol. 2005 May 6;348(3):655-70. PMID:15826662 doi:10.1016/j.jmb.2005.03.021

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2bmb"

@@ Line 3: / Line 3: @@
 <StructureSection load='2bmb' size='340' side='right'caption='[[2bmb]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2bmb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BMB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BMB FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2bmb]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BMB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BMB FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PMM:PTERIN-6-YL-METHYL-MONOPHOSPHATE'>PMM</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PMM:PTERIN-6-YL-METHYL-MONOPHOSPHATE'>PMM</scene></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2bmb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bmb OCA], [https://pdbe.org/2bmb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bmb RCSB], [https://www.ebi.ac.uk/pdbsum/2bmb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bmb ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/FOL1_YEAST FOL1_YEAST] Catalyzes three sequential steps of tetrahydrofolate biosynthesis.<ref>PMID:15169867</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 33: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Atcc 18824]]
 [[Category: Large Structures]]
-[[Category: Berglez, J]]
+[[Category: Saccharomyces cerevisiae]]
-[[Category: Fernley, R T]]
+[[Category: Berglez J]]
-[[Category: Iliades, P]]
+[[Category: Fernley RT]]
-[[Category: Lawrence, M C]]
+[[Category: Iliades P]]
-[[Category: Macreadie, I G]]
+[[Category: Lawrence MC]]
-[[Category: Pilling, P A]]
+[[Category: Macreadie IG]]
-[[Category: Folate biosynthesis]]
+[[Category: Pilling PA]]
-[[Category: Ligase]]
-[[Category: Multifunctional enzyme]]
-[[Category: Transferase]]

2bmb

From Proteopedia

Current revision

X-ray structure of the bifunctional 6-hydroxymethyl-7,8- dihydroxypterin pyrophosphokinase dihydropteroate synthase from Saccharomyces cerevisiae

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox