Q8A137 (FABH2_BACTN) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
3-oxoacyl-[acyl-carrier-protein] synthase 3 protein 2
EC=2.3.1.180

Alternative name(s):
3-oxoacyl-[acyl-carrier-protein] synthase III protein 2
Beta-ketoacyl-ACP synthase III 2
Short name=KAS III 2

Gene names

Name:	fabH2
Ordered Locus Names:	BT_3834

Organism

Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / NCTC 10582 / E50 / VPI-5482)

Taxonomic identifier

226186 [NCBI]

Taxonomic lineage

Bacteria › Bacteroidetes › Bacteroidia › Bacteroidales › Bacteroidaceae › Bacteroides

Protein attributes

Sequence length	335 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 – 335	335	3-oxoacyl-[acyl-carrier-protein] synthase 3 protein 2 HAMAP MF_01815		PRO_0000110402
Regions
	Region	257 – 261	5	ACP-binding By similarity
Sites
	Active site	116	1	By similarity
	Active site	256	1	By similarity
	Active site	286	1	By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8A137 [UniParc]. Last modified June 1, 2003. Version 1. Checksum: 38464870119CED22	FASTA	335	36,979
	10 20 30 40 50 60 MEKINAVITG VGGYVPDYIL TNEEISKMVD TNDEWIMTRI GVKERHILNE EGLGSSYMAR 70 80 90 100 110 120 KAAKQLMKKT GANPDDIDLV IVATTTPDYH FPSTASILCD KLGLKNAFAF DLQAACCGFL 130 140 150 160 170 180 YLMETAANFI RSGRYKKIII VGADKMSSMV NYTDRATCPI FGDGAAAFMM EPTTEDLGVM 190 200 210 220 230 240 DSILRTDGKG LPFLHMKAGG SVCPPSYFTV DNKMHYLHQE GRTVFKYAVS SMSDVSAAIA 250 260 270 280 290 300 EKNGLTKDTI NWVVPHQANV RIIEAVAHRM ELPMDKVLVN IEHYGNTSAA TLPLCIWDFE 310 320 330 DKLKKGDNII FTAFGAGFTW GAVYVKWGYD GKKES

References

[1]

"A genomic view of the human-Bacteroides thetaiotaomicron symbiosis." Xu J., Bjursell M.K., Himrod J., Deng S., Carmichael L.K., Chiang H.C., Hooper L.V., Gordon J.I. Science 299:2074-2076(2003) [PubMed: 12663928] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 29148 / DSM 2079 / NCTC 10582 / E50 / VPI-5482.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE015928 Genomic DNA. Translation: AAO78939.1.
RefSeq	NP_812745.1. NC_004663.1.
3D structure databases
ProteinModelPortal	Q8A137.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1072737.
GenomeReviews	Gene locus BT_3834 in contig AE015928_GR.
KEGG	bth:BT_3834.
NMPDR	fig|226186.1.peg.3832.
PATRIC	21062694. VBIBacThe70966_3898.
Phylogenomic databases
HOGENOM	HBG649927.
OMA	YLMETAA.
PhylomeDB	Q8A137.
ProtClustDB	PRK09352.
Enzyme and pathway databases
BioCyc	BTHE226186:BT_3834-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

FABH2_BACTN

Accession

Primary (citable) accession number: Q8A137

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 15, 2003
Last sequence update:	June 1, 2003
Last modified:	January 25, 2012
This is version 65 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program