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A6TF07 (CYSG2_KLEP7) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 51. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Siroheme synthase 2

Including the following 3 domains:

  1. Uroporphyrinogen-III C-methyltransferase 2
    Short name=Urogen III methylase 2
    EC=2.1.1.107
    Alternative name(s):
    SUMT 2
    Uroporphyrinogen III methylase 2
    Short name=UROM 2
  2. Precorrin-2 dehydrogenase 2
    EC=1.3.1.76
  3. Sirohydrochlorin ferrochelatase 2
    EC=4.99.1.4
Gene names
Name:cysG2
Ordered Locus Names:KPN78578_37170
ORF Names:KPN_03754
OrganismKlebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578) [Complete proteome] [HAMAP]
Taxonomic identifier272620 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeKlebsiella

Protein attributes

Sequence length457 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme By similarity. HAMAP-Rule MF_01646

Catalytic activity

S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1. HAMAP-Rule MF_01646

S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. HAMAP-Rule MF_01646

Precorrin-2 + NAD+ = sirohydrochlorin + NADH. HAMAP-Rule MF_01646

Siroheme + 2 H+ = sirohydrochlorin + Fe2+. HAMAP-Rule MF_01646

Pathway

Cofactor biosynthesis; adenosylcobalamin biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP-Rule MF_01646

Cofactor biosynthesis; adenosylcobalamin biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.

Porphyrin-containing compound metabolism; siroheme biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP-Rule MF_01646

Porphyrin-containing compound metabolism; siroheme biosynthesis; siroheme from sirohydrochlorin: step 1/1.

Porphyrin-containing compound metabolism; siroheme biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.

Sequence similarities

In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase family.

In the C-terminal section; belongs to the precorrin methyltransferase family.

Sequence caution

The sequence ABR79141.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 457457Siroheme synthase 2 HAMAP-Rule MF_01646
PRO_0000330519

Regions

Nucleotide binding22 – 232NAD By similarity
Nucleotide binding43 – 442NAD By similarity
Region1 – 204204precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase By similarity
Region216 – 457242Uroporphyrinogen-III C-methyltransferase By similarity
Region301 – 3033S-adenosyl-L-methionine binding By similarity
Region331 – 3322S-adenosyl-L-methionine binding By similarity

Sites

Active site2481Proton acceptor By similarity
Active site2701Proton donor By similarity
Binding site2251S-adenosyl-L-methionine; via carbonyl oxygen By similarity
Binding site3061S-adenosyl-L-methionine; via carbonyl oxygen By similarity
Binding site3821S-adenosyl-L-methionine; via amide nitrogen By similarity
Binding site4111S-adenosyl-L-methionine; via amide nitrogen and carbonyl oxygen By similarity

Amino acid modifications

Modified residue1281Phosphoserine By similarity

Sequences

Sequence LengthMass (Da)Tools
A6TF07 [UniParc].

Last modified April 29, 2008. Version 2.
Checksum: A62522225BC5253E

FASTA45749,979
        10         20         30         40         50         60 
MDHLPIFCQL RQRDCLLVGG GDVAERKARL LLDAGANVTV NALDFTPQFQ VWADSQMLTL 

        70         80         90        100        110        120 
VQGEFIPSLL DNCWLAIAAT DDETVNQQVS EAAEARRIFC NVVDAPRQAS FIMPSIIDRS 

       130        140        150        160        170        180 
PLMVAVSSGG TSPVLARLLR EKLESILPLH LGQLARYAGH LRARVKQQFA TVGERRRFWE 

       190        200        210        220        230        240 
KLFVNDRLAQ SLANDDRQAV ADTTEQLLTE PLEHRGEVVL VGAGPGDAGL LTLKGLQQIQ 

       250        260        270        280        290        300 
QADVVVYDRL VSDDIMNLVR RDADRVFVGK RSGYHCVPQE EINQILLREA QKGRRVVRLK 

       310        320        330        340        350        360 
GGDPFIFGRG GEELETLCEA GIPFSVVPGI TAASGCSAYS GIPLTHRDFA QGVRLVTGHL 

       370        380        390        400        410        420 
KTGGELDWAN LAVEKQTLVF YMGLNQAPAI REKLIAHGMA EDMPAAIVEN GTAVTQKVVS 

       430        440        450 
GTLGQLDILA QQMASPALII VGRVVGLRDK LNWFSNH 

« Hide

References

[1]The Klebsiella pneumonia Genome Sequencing Project
McClelland M., Sanderson E.K., Spieth J., Clifton W.S., Latreille P., Sabo A., Pepin K., Bhonagiri V., Porwollik S., Ali J., Wilson R.K.
Submitted (SEP-2006) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC 700721 / MGH 78578.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000647 Genomic DNA. Translation: ABR79141.1. Different initiation.
RefSeqYP_001337408.1. NC_009648.1.

3D structure databases

ProteinModelPortalA6TF07.
SMRA6TF07. Positions 1-457.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING272620.KPN_03754.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABR79141; ABR79141; KPN_03754.
GeneID5341883.
KEGGkpn:KPN_03754.
PATRIC20461937. VBIKlePne13394_3813.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0007.
HOGENOMHOG000290518.
KOK02302.
OrthoDBEOG6DRPFR.

Enzyme and pathway databases

BioCycKPNE272620:GKDC-3791-MONOMER.
UniPathwayUPA00148; UER00211.
UPA00148; UER00222.
UPA00262; UER00211.
UPA00262; UER00222.
UPA00262; UER00376.

Family and domain databases

Gene3D1.10.8.210. 1 hit.
3.30.950.10. 1 hit.
3.40.1010.10. 1 hit.
3.40.50.720. 1 hit.
HAMAPMF_01646. Siroheme_synth.
InterProIPR000878. 4pyrrol_Mease.
IPR014777. 4pyrrole_Mease_sub1.
IPR014776. 4pyrrole_Mease_sub2.
IPR006366. CobA/CysG_C.
IPR016040. NAD(P)-bd_dom.
IPR012409. Sirohaem_synth.
IPR019478. Sirohaem_synthase_dimer_dom.
IPR006367. Sirohaem_synthase_N.
IPR003043. Uropor_MeTrfase_CS.
[Graphical view]
PfamPF10414. CysG_dimeriser. 1 hit.
PF13241. NAD_binding_7. 1 hit.
PF00590. TP_methylase. 1 hit.
[Graphical view]
PIRSFPIRSF036426. Sirohaem_synth. 1 hit.
SUPFAMSSF53790. SSF53790. 1 hit.
TIGRFAMsTIGR01469. cobA_cysG_Cterm. 1 hit.
TIGR01470. cysG_Nterm. 1 hit.
PROSITEPS00839. SUMT_1. 1 hit.
PS00840. SUMT_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameCYSG2_KLEP7
AccessionPrimary (citable) accession number: A6TF07
Entry history
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: April 29, 2008
Last modified: June 11, 2014
This is version 51 of the entry and version 2 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