Q8RGX7 (FABH_FUSNN) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
3-oxoacyl-[acyl-carrier-protein] synthase 3
EC=2.3.1.180

Alternative name(s):
3-oxoacyl-[acyl-carrier-protein] synthase III
Beta-ketoacyl-ACP synthase III
Short name=KAS III

Gene names

Name:	fabH
Ordered Locus Names:	FN0148

Organism

Fusobacterium nucleatum subsp. nucleatum (strain ATCC 25586 / CIP 101130 / JCM 8532 / LMG 13131)

Taxonomic identifier

190304 [NCBI]

Taxonomic lineage

Bacteria › Fusobacteria › Fusobacterales › Fusobacteriaceae › Fusobacterium

Protein attributes

Sequence length	328 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the condensation reaction of fatty acid synthesis by the addition to an acyl acceptor of two carbons from malonyl-ACP. Catalyzes the first condensation reaction which initiates fatty acid synthesis and may therefore play a role in governing the total rate of fatty acid production. Possesses both acetoacetyl-ACP synthase and acetyl transacylase activities. Its substrate specificity determines the biosynthesis of branched-chain and/or straight-chain of fatty acids By similarity. HAMAP MF_01815
Catalytic activity	Acetyl-CoA + malonyl-[acyl-carrier-protein] = acetoacetyl-[acyl-carrier-protein] + CoA + CO2. HAMAP MF_01815
Pathway	Lipid metabolism; fatty acid biosynthesis. HAMAP MF_01815
Subunit structure	Homodimer By similarity. HAMAP MF_01815
Subcellular location	Cytoplasm Probable HAMAP MF_01815.
Domain	The last Arg residue of the ACP-binding site is essential for the weak association between ACP/AcpP and FabH By similarity. HAMAP MF_01815
Sequence similarities	Belongs to the FabH family.

Ontologies

Keywords
Biological process	Fatty acid biosynthesis Lipid synthesis
Cellular component	Cytoplasm
Molecular function	Acyltransferase Transferase
Technical term	Complete proteome Multifunctional enzyme Reference proteome
Gene Ontology (GO)
Biological process	fatty acid biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	3-oxoacyl-[acyl-carrier-protein] synthase activity Inferred from electronic annotation. Source: InterPro beta-ketoacyl-acyl-carrier-protein synthase III 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 – 328	328	3-oxoacyl-[acyl-carrier-protein] synthase 3 HAMAP MF_01815		PRO_0000110429
Regions
	Region	254 – 258	5	ACP-binding By similarity
Sites
	Active site	113	1	By similarity
	Active site	253	1	By similarity
	Active site	283	1	By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8RGX7 [UniParc]. Last modified June 1, 2002. Version 1. Checksum: 6FC445A475A5015E	FASTA	328	35,658
	10 20 30 40 50 60 MQSIGIKGMG YYVPENVFTN FDFEKIIDTS DEWIRTRTGI IERRFASKDQ ATSDLATEAS 70 80 90 100 110 120 LKAIKNAKIS KEDVDMIILA TTTADYIAQG AACIVQNKLG LKKIPCFDLN AACTGFIYGL 130 140 150 160 170 180 EVAYSLVKSG LYKNILVIGA ETLSRIVDMQ NRNTCVLFGD GAAAAIIGEV EKGYGFLGFS 190 200 210 220 230 240 IGAEGEDNMI LKVPAGGSKK PNNEETIKNR ENFVIMKGQD VFKFAVSTLP KVTSDALEKA 250 260 270 280 290 300 KLKVNDLSMV FPHQANLRII ESAAKRMKFP LEKFYMNLSR YGNTSSASVG IALGEAIEKG 310 320 LVKKGDNIAL TGFGGGLTYG STIIKWAY

References

[1]

"Genome sequence and analysis of the oral bacterium Fusobacterium nucleatum strain ATCC 25586." Kapatral V., Anderson I., Ivanova N., Reznik G., Los T., Lykidis A., Bhattacharyya A., Bartman A., Gardner W., Grechkin G., Zhu L., Vasieva O., Chu L., Kogan Y., Chaga O., Goltsman E., Bernal A., Larsen N. , D'Souza M., Walunas T., Pusch G., Haselkorn R., Fonstein M., Kyrpides N.C., Overbeek R. J. Bacteriol. 184:2005-2018(2002) [PubMed: 11889109] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 25586 / CIP 101130 / JCM 8532 / LMG 13131.

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Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE009951 Genomic DNA. Translation: AAL94354.1.
RefSeq	NP_603055.1. NC_003454.1.
3D structure databases
ProteinModelPortal	Q8RGX7.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	991460.
GenomeReviews	Gene locus FN0148 in contig AE009951_GR.
KEGG	fnu:FN0148.
NMPDR	fig|190304.1.peg.734.
PATRIC	21950071. VBIFusNuc122357_0728.
Phylogenomic databases
HOGENOM	HBG649927.
OMA	TVAKMGY.
PhylomeDB	Q8RGX7.
ProtClustDB	PRK09352.
Enzyme and pathway databases
BioCyc	FNUC190304:FN0148-MONOMER.
Family and domain databases
HAMAP	MF_01815. FabH. [Tree]
InterPro	IPR013751. ACP_syn_III. IPR013747. ACP_syn_III_C. IPR004655. FabH_synth. IPR016039. Thiolase-like. IPR016038. Thiolase-like_subgr. [Graphical view]
Gene3D	G3DSA:3.40.47.10. Thiolase-like_subgr. 2 hits.
KO	K00648.
Pfam	PF08545. ACP_syn_III. 1 hit. PF08541. ACP_syn_III_C. 1 hit. [Graphical view]
SUPFAM	SSF53901. Thiolase-like. 1 hit.
TIGRFAMs	TIGR00747. FabH. 1 hit.
ProtoNet	Search...

Entry information

Entry name

FABH_FUSNN

Accession

Primary (citable) accession number: Q8RGX7

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 15, 2003
Last sequence update:	June 1, 2002
Last modified:	January 25, 2012
This is version 64 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program