Reviewed, UniProtKB/Swiss-Prot Q49150 (PQQCD_METEX)

Names and origin

Protein names

Recommended name:
    Bifunctional coenzyme PQQ synthesis protein C/D
Alternative name(s):
    Pyrroloquinoline quinone biosynthesis protein C/D
Including the following 2 domains:
    1- Recommended name:
            Pyrroloquinoline-quinone synthase
              EC=1.3.3.11
        Alternative name(s):
            Coenzyme PQQ synthesis protein C
    2- Recommended name:
            Coenzyme PQQ synthesis protein D

Gene names

Name:

pqqCD

Organism

Methylobacterium extorquens (Protomonas extorquens)

Taxonomic identifier

408 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Methylobacteriaceae › Methylobacterium

Protein attributes

Sequence length	372 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Ring cyclization and eight-electron oxidation of 3a-(2-amino-2-carboxyethyl)-4,5-dioxo-4,5,6,7,8,9-hexahydroquinoline-7,9-dicarboxylic-acid to PQQ By similarity.
Catalytic activity	6-(2-amino-2-carboxyethyl)-7,8-dioxo-1,2,3,4,7,8-hexahydroquinoline-2,4-dicarboxylate + 3 O2 = 4,5-dioxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate + 2 H2O2 + 2 H2O. HAMAP MF_00654
Pathway	Cofactor biosynthesis; pyrroloquinoline quinone biosynthesis. HAMAP MF_00654
Sequence similarities	In the N-terminal section; belongs to the pqqC family. In the C-terminal section; belongs to the pqqD family.

Ontologies

Keywords
Biological process	PQQ biosynthesis
Molecular function	Oxidoreductase
Gene Ontology (GO)
Biological process	oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW pyrroloquinoline quinone biosynthetic process Inferred from electronic annotation. Source: HAMAP
Molecular function	pyrroloquinoline-quinone synthase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 372	372	Bifunctional coenzyme PQQ synthesis protein C/D HAMAP MF_00654		PRO_0000219980
Regions
	Region	1 – 267	267	PqqC HAMAP MF_00654
	Region	268 – 280	13	Linker HAMAP MF_00654
	Region	281 – 372	92	PqqD HAMAP MF_00654

Sequences

	Sequence		Length	Mass (Da)
	Q49150-1 [UniParc]. Last modified June 16, 2003. Version 2. Checksum: 3E502CEB4097695D	FASTA	372	41,577
	10 20 30 40 50 60 MTAQFPPPVP DTEQRLLSHE ELEAALRDIG ARRYHNLHPF HRLLHDGKLS KDQVRAWALN 70 80 90 100 110 120 RYYYQAMIPV KDAALLARLP DAQLRRIWRQ RIVDHDGDHE GDGGIERWLK LAEGVGFTRD 130 140 150 160 170 180 YVLSTKGILS ATRFSVDAYV HFVSERSLLE AIASSLTEMF SPTIISERVA GMLKNYDFIT 190 200 210 220 230 240 KDTLAYFDKR LTQAPRDADF ALDYVKRHAT TPEMQRAAID ALTFKCNVLW TQLDALYFAY 250 260 270 280 290 300 VAPGMVPPDA WQPGEGLVAE TNSAEDSPAA AASPAATTAE PTAFSGSDVP RLPRGVRLRF 310 320 330 340 350 360 DEVRNKHVLL APERTFDLDD NAVAVLKLVD GRNTVSQIAQ ILGQTYDADP AIIEADILPM 370 LAGLAQKRVL ER

References

[1]

"Isolation, phenotypic characterization, and complementation analysis of mutants of Methylobacterium extorquens AM1 unable to synthesize pyrroloquinoline quinone and sequences of pqqD, pqqG, and pqqC." Morris C.J., Biville F., Turlin E., Lee E., Ellermann K., Fan W.H., Ramamoorthi R., Springer A.L., Lidstrom M.E. J. Bacteriol. 176:1746-1755(1994) [PubMed: 8132470] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-111. Strain: AM1 / NCIMB 9133.

[2]

"Sequence analysis of pqq genes required for biosynthesis of pyrroloquinoline quinone in Methylobacterium extorquens AM1 and the purification of a biosynthetic intermediate." Toyama H., Chistoserdova L., Lidstrom M.E. Microbiology 143:595-602(1997) [PubMed: 9043136] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 110-372. Strain: AM1 / NCIMB 9133.

Cross-references

Sequence databases
EMBLGenBankDDBJ	L25889 Unassigned DNA. Translation: AAA17880.1. U72662 Genomic DNA. Translation: AAB58899.1.
PIR	C55527.
3D structure databases
ModBase	Search...
Enzyme and pathway databases
BRENDA	1.3.3.11. 20440.
Family and domain databases
HAMAP	MF_00654. Fused. [Tree] MF_00655. Fused. [Tree]
InterPro	IPR016084. Haem_Oase-like_multi-hlx. IPR011845. PQQ_synth_PqqC. IPR008792. PQQ_synth_PqqD. IPR004305. TENA/THI4/PQQ_synth_PqqC. [Graphical view]
Gene3D	G3DSA:1.20.910.10. Haem_Oase-like_multi-hlx. 1 hit.
Pfam	PF05402. PqqD. 1 hit. PF03070. TENA_THI-4. 1 hit. [Graphical view]
TIGRFAMs	TIGR02111. PQQ_syn_pqqC. 1 hit.
ProtoNet	Search...

Entry information

Entry name

PQQCD_METEX

Accession

Primary (citable) accession number: Q49150
Secondary accession number(s): P71518

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 16, 2003
Last sequence update:	June 16, 2003
Last modified:	January 20, 2009
This is version 39 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)