Reviewed, UniProtKB/Swiss-Prot Q8Z062 (FABH_ANASP)

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:	alr0239

Organism

Anabaena sp. (strain PCC 7120) [Complete proteome] [HAMAP]

Taxonomic identifier

103690 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Nostocales › Nostocaceae › Nostoc

Protein attributes

Sequence length	330 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
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.
Catalytic activity	Acetyl-CoA + malonyl-[acyl-carrier-protein] = acetoacyl-[acyl-carrier-protein] + CoA + CO2. HAMAP MF_01815
Pathway	Lipid metabolism; fatty acid biosynthesis. HAMAP MF_01815
Subunit structure	Homodimer By similarity.
Subcellular location	Cytoplasm Probable.
Domain	The last Arg residue of the ACP-binding site is essential for the weak association between ACP/acpP and fabH By similarity.
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
Gene Ontology (GO)
Biological process	fatty acid biosynthetic process Inferred from electronic annotation. Source: HAMAP
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	3-oxoacyl-[acyl-carrier-protein] synthase activity Inferred from electronic annotation. Source: HAMAP 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 – 330	330	3-oxoacyl-[acyl-carrier-protein] synthase 3 HAMAP MF_01815		PRO_0000110391
Regions
	Region	256 – 260	5	ACP-binding By similarity
Sites
	Active site	114	1	By similarity
	Active site	255	1	By similarity
	Active site	285	1	By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q8Z062-1 [UniParc]. Last modified March 1, 2002. Version 1. Checksum: F5B923CA617173E5	FASTA	330	35,355
	10 20 30 40 50 60 MQNLGIAITG SGSAVPETSL HNEELSQLVE TSDEWISTRT GIRQRRLALP TESLSSLAAA 70 80 90 100 110 120 ASRQAIASAG ITASDIDLIL LATSTPDDLF GTATKIQAEL GANKAVAFDL TAACSGFVFG 130 140 150 160 170 180 LVTAAQFIRT GVYQNVLLIG ADILSRWVDW QDRRTCVLFG DGAGAVVLQA NSSDRLLGFA 190 200 210 220 230 240 LKSDGTQNHY LNLAYQGTAK EILPNVKITQ GTYQPVTMNG KEVYRFAAQK VPEIIDKALF 250 260 270 280 290 300 EAQLTVDQID WLLLHQANQR ILDTVAQRLN IPAHKVISNL ANYGNTSAAS IPLALDEAVR 310 320 330 EGKIKPNDII ATSGFGAGLT WGAAIFQWGR

References

[1]

"Complete genomic sequence of the filamentous nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120." Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A., Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M., Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M. , Takazawa M., Yamada M., Yasuda M., Tabata S. DNA Res. 8:205-213(2001) [PubMed: 11759840] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	BA000019 Genomic DNA. Translation: BAB77763.1.
PIR	AG1836.
RefSeq	NP_484283.1.
3D structure databases
HSSP	HSSP built from PDB template 1HNK based on UniProtKB P24249.
ModBase	Search...
Protein-protein interaction databases
STRING	Q8Z062.
Genome annotation databases
GeneID	1103836.
GenomeReviews	Gene locus alr0239 in contig BA000019_GR.
KEGG	ana:alr0239.
NMPDR	fig|103690.1.peg.550.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q8Z062.
OMA	YIVPHQA.
Enzyme and pathway databases
BioCyc	NSP103690:ALR0239-MON.
Family and domain databases
HAMAP	MF_01815. [Tree]
InterPro	IPR013751. ACP_syn_III. IPR013747. ACP_syn_III_C. IPR004655. FabH_synth. IPR016038. Thiolase-like_subgr. [Graphical view]
Gene3D	G3DSA:3.40.47.10. Thiolase-like_subgr. 2 hits.
Pfam	PF08545. ACP_syn_III. 1 hit. PF08541. ACP_syn_III_C. 1 hit. [Graphical view]
TIGRFAMs	TIGR00747. fabH. 1 hit.
ProtoNet	Search...

Entry information

Entry name

FABH_ANASP

Accession

Primary (citable) accession number: Q8Z062

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 15, 2003
Last sequence update:	March 1, 2002
Last modified:	November 3, 2009
This is version 46 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)