Skip Header

You are using a version of Internet Explorer that may not display all features of this website. Please upgrade to a modern browser.
Contribute Send feedback
Read comments (?) or add your own

P0AC11 (DHP2_ECOLX) Reviewed, UniProtKB/Swiss-Prot

Last modified January 22, 2014. Version 52. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Dihydropteroate synthase type-2

EC=2.5.1.15
Alternative name(s):
Dihydropteroate pyrophosphorylase type II
Dihydropteroate synthase type II
Short name=DHPS
Gene names
Name:sulII
Encoded onPlasmid pGS05 Ref.1
Plasmid pGS03B Ref.1
Plasmid IncQ RSF1010 Ref.1
OrganismEscherichia coli
Taxonomic identifier562 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeEscherichia

Protein attributes

Sequence length271 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

DHPS catalyzes the formation of the immediate precursor of folic acid. It is implicated in resistance to sulfonamide. The type II enzyme is stable whereas type I DHPS loses its activity rapidly.

Catalytic activity

(2-amino-4-hydroxy-7,8-dihydropteridin-6-yl)methyl diphosphate + 4-aminobenzoate = diphosphate + dihydropteroate.

Cofactor

Binds 1 magnesium ion per subunit. Magnesium is required for activity, even if it interacts primarily with the substrate By similarity.

Pathway

Cofactor biosynthesis; tetrahydrofolate biosynthesis; 7,8-dihydrofolate from 2-amino-4-hydroxy-6-hydroxymethyl-7,8-dihydropteridine diphosphate and 4-aminobenzoate: step 1/2.

Subunit structure

Homodimer Probable.

Miscellaneous

The sulII gene is located on various IncQ (Broad-host-range) plasmids and other small non-conjugative resistance plasmids.

Sequence similarities

Belongs to the DHPS family.

Contains 1 pterin-binding domain.

Ontologies

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 271271Dihydropteroate synthase type-2
PRO_0000168203

Regions

Domain1 – 259259Pterin-binding
Region52 – 532Substrate binding By similarity

Sites

Metal binding121Magnesium By similarity
Binding site201Substrate By similarity
Binding site851Substrate By similarity
Binding site1041Substrate By similarity
Binding site1741Substrate By similarity
Binding site2131Substrate By similarity
Binding site2471Substrate By similarity
Binding site2491Substrate By similarity

Sequences

Sequence LengthMass (Da)Tools
P0AC11 [UniParc].

Last modified November 8, 2005. Version 1.
Checksum: 4B00E71A3F7970FB

FASTA27128,470
        10         20         30         40         50         60 
MNKSLIIFGI VNITSDSFSD GGRYLAPDAA IAQARKLMAE GADVIDLGPA SSNPDAAPVS 

        70         80         90        100        110        120 
SDTEIARIAP VLDALKADGI PVSLDSYQPA TQAYALSRGV AYLNDIRGFP DAAFYPQLAK 

       130        140        150        160        170        180 
SSAKLVVMHS VQDGQADRRE APAGDIMDHI AAFFDARIAA LTGAGIKRNR LVLDPGMGFF 

       190        200        210        220        230        240 
LGAAPETSLS VLARFDELRL RFDLPVLLSV SRKSFLRALT GRGPGDVGAA TLAAELAAAA 

       250        260        270 
GGADFIRTHE PRPLRDGLAV LAALKETARI R 

« Hide

References

[1]"RSF1010 and a conjugative plasmid contain sulII, one of two known genes for plasmid-borne sulfonamide resistance dihydropteroate synthase."
Raedstroem P., Swedberg G.
Antimicrob. Agents Chemother. 32:1684-1692(1988) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
M36657 Genomic DNA. Translation: AAA24936.1.
PIRA34950.
RefSeqNP_957531.1. NC_005324.1.
YP_002455756.1. NC_011795.1.
YP_002891091.1. NC_012690.1.
YP_002894395.1. NC_012692.1.
YP_002995721.1. NC_012886.1.
YP_006940094.1. NC_018995.1.
YP_006952281.1. NC_019060.1.
YP_006952747.1. NC_019065.1.
YP_006952891.1. NC_019066.1.
YP_006953258.1. NC_019070.1.
YP_006953602.1. NC_019080.1.
YP_007349479.1. NC_020086.1.
YP_008574999.1. NC_022377.1.
YP_794145.1. NC_008490.1.
YP_891140.1. NC_008597.1.

3D structure databases

ProteinModelPortalP0AC11.
ModBaseSearch...
MobiDBSearch...

Proteomic databases

PRIDEP0AC11.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID13877054.
13905222.
13905650.
13905795.
13906179.
13906535.
15152799.
17035774.
2716515.
4397525.
4525479.
7205328.
7872496.
7872620.
8094934.

Phylogenomic databases

ProtClustDBCLSK862171.

Enzyme and pathway databases

UniPathwayUPA00077; UER00156.

Family and domain databases

Gene3D3.20.20.20. 1 hit.
InterProIPR006390. DHP_synth.
IPR011005. Dihydropteroate_synth-like.
IPR000489. Pterin-binding.
[Graphical view]
PfamPF00809. Pterin_bind. 1 hit.
[Graphical view]
SUPFAMSSF51717. SSF51717. 1 hit.
TIGRFAMsTIGR01496. DHPS. 1 hit.
PROSITEPS00792. DHPS_1. 1 hit.
PS00793. DHPS_2. 1 hit.
PS50972. PTERIN_BINDING. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameDHP2_ECOLX
AccessionPrimary (citable) accession number: P0AC11
Secondary accession number(s): P19539
Entry history
Integrated into UniProtKB/Swiss-Prot: November 8, 2005
Last sequence update: November 8, 2005
Last modified: January 22, 2014
This is version 52 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways