Reviewed, UniProtKB/Swiss-Prot Q8KEA8 (GCH1_CHLTE)

Names and origin

Protein names

Recommended name:
    GTP cyclohydrolase 1
    EC=3.5.4.16
Alternative name(s):
    GTP cyclohydrolase I
      Short name=GTP-CH-I

Gene names

Name:	folE
Ordered Locus Names:	CT0781

Organism

Chlorobium tepidum [Complete proteome] [HAMAP]

Taxonomic identifier

1097 [NCBI]

Taxonomic lineage

Bacteria › Chlorobi › Chlorobia › Chlorobiales › Chlorobiaceae › Chlorobaculum

Protein attributes

Sequence length	224 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	GTP + H2O = formate + 2-amino-4-hydroxy-6-(erythro-1,2,3-trihydroxypropyl)-dihydropteridine triphosphate. HAMAP MF_00223
Pathway	Cofactor biosynthesis; dihydroneopterin triphosphate biosynthesis; 2-amino-4-hydroxy-6-(erythro-1,2,3-trihydroxypropyl)-dihydropteridine triphosphate from GTP: step 1/1. HAMAP MF_00223
Subunit structure	Toroid-shaped homodecamer, composed of two pentamers of five dimers By similarity.
Sequence similarities	Belongs to the GTP cyclohydrolase I family.

Ontologies

Keywords
Biological process	One-carbon metabolism
Ligand	GTP-binding Metal-binding Nucleotide-binding Zinc
Molecular function	Hydrolase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	one-carbon compound metabolic process Inferred from electronic annotation. Source: HAMAP tetrahydrofolate biosynthetic process Inferred from electronic annotation. Source: HAMAP
Cellular component	cytoplasm Inferred from electronic annotation. Source: InterPro
Molecular function	GTP binding Inferred from electronic annotation. Source: UniProtKB-KW GTP cyclohydrolase I activity Inferred from electronic annotation. Source: HAMAP zinc ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 224	224	GTP cyclohydrolase 1 HAMAP MF_00223		PRO_0000119396
Sites
	Metal binding	114	1	Zinc By similarity
	Metal binding	117	1	Zinc By similarity
	Metal binding	185	1	Zinc By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8KEA8-1 [UniParc]. Last modified October 1, 2002. Version 1. Checksum: F2E4A9B7157D7807	FASTA	224	25,368
	10 20 30 40 50 60 MKQEKTVSPT VENNRSAESR LSQCDLDECF DESHDRDEEV LGSMTDAVYS LLKGVGEDPE 70 80 90 100 110 120 REGLLLTPER VAKSLRFLTK GYRQDPEQLL KKAVFTESYD EMVLVKDIDI YSMCEHHMLP 130 140 150 160 170 180 FFGKAHVAYI PDGKIVGLSK IPRVVEVFAR RLQVQERLTQ QIRDAIQNVL NPRGVAVVIE 190 200 210 220 ATHMCMVMRG VEKQNAVTTT SAMSGDFMTS QSTRSEFLRL IGNH

References

[1]

"The complete genome sequence of Chlorobium tepidum TLS, a photosynthetic, anaerobic, green-sulfur bacterium." Eisen J.A., Nelson K.E., Paulsen I.T., Heidelberg J.F., Wu M., Dodson R.J., DeBoy R.T., Gwinn M.L., Nelson W.C., Haft D.H., Hickey E.K., Peterson J.D., Durkin A.S., Kolonay J.F., Yang F., Holt I.E., Umayam L.A., Mason T.M. , Brenner M., Shea T.P., Parksey D.S., Nierman W.C., Feldblyum T.V., Hansen C.L., Craven M.B., Radune D., Vamathevan J.J., Khouri H.M., White O., Gruber T.M., Ketchum K.A., Venter J.C., Tettelin H., Bryant D.A., Fraser C.M. Proc. Natl. Acad. Sci. U.S.A. 99:9509-9514(2002) [PubMed: 12093901] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 49652 / DSM 12025 / TLS.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AE006470 Genomic DNA. Translation: AAM72018.1.
RefSeq	NP_661676.1.
3D structure databases
HSSP	HSSP built from PDB template 1IS8 based on UniProtKB P22288.
ModBase	Search...
Genome annotation databases
GeneID	1006416.
GenomeReviews	Gene locus CT0781 in contig AE006470_GR.
KEGG	cte:CT0781.
NMPDR	fig|194439.1.peg.770.
TIGR	CT0781.
Phylogenomic databases
HOGENOM	Q8KEA8.
OMA	Q8KEA8. ARIVEMF.
Enzyme and pathway databases
BioCyc	CTEP194439:CT_0781-MON.
BRENDA	3.5.4.16. 189605.
Family and domain databases
HAMAP	MF_00223. [Tree]
InterPro	IPR001474. GTP_CycHdrlase_I. IPR018234. GTP_CycHdrlase_I_CS. [Graphical view]
PANTHER	PTHR11109. GTP_cyclohydro_I. 1 hit.
Pfam	PF01227. GTP_cyclohydroI. 1 hit. [Graphical view]
ProDom	PD003330. GTP_cyclohydroI. 1 hit. [Graphical view] [Entries sharing at least one domain]
TIGRFAMs	TIGR00063. folE. 1 hit.
PROSITE	PS00859. GTP_CYCLOHYDROL_1_1. 1 hit. PS00860. GTP_CYCLOHYDROL_1_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

GCH1_CHLTE

Accession

Primary (citable) accession number: Q8KEA8

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 15, 2002
Last sequence update:	October 1, 2002
Last modified:	June 16, 2009
This is version 45 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

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