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91  structures 4322  species 1  interaction 7398  sequences 25  architectures

Family: ACP_syn_III_C (PF08541)

Summary: 3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III C terminal

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The Pfam group coordinates the annotation of Pfam families in Wikipedia, but we have not yet assigned a Wikipedia article to this family. If you think that a particular Wikipedia article provides good annotation, please let us know.

This tab holds the annotation information that is stored in the Pfam database. As we move to using Wikipedia as our main source of annotation, the contents of this tab will be gradually replaced by the Wikipedia tab.

3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III C terminal Provide feedback

This domain is found on 3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III EC:2.3.1.41, the enzyme responsible for initiating the chain of reactions of the fatty acid synthase in plants and bacteria.

Literature references

  1. Abbadi A, Brummel M, Schutt BS, Slabaugh MB, Schuch R, Spener F; , Biochem J 2000;345:153-160.: Reaction mechanism of recombinant 3-oxoacyl-(acyl-carrier-protein) synthase III from Cuphea wrightii embryo, a fatty acid synthase type II condensing enzyme. PUBMED:10600651 EPMC:10600651


Internal database links

External database links

This tab holds annotation information from the InterPro database.

InterPro entry IPR013747

This domain is found on 3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III EC, the enzyme responsible for initiating the chain of reactions of the fatty acid synthase in plants and bacteria.

Gene Ontology

The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.

Domain organisation

Below is a listing of the unique domain organisations or architectures in which this domain is found. More...

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Pfam Clan

This family is a member of clan Thiolase (CL0046), which has the following description:

Thiolases are ubiquitous and form a large superfamily. Thiolases can function either degradatively, in the beta-oxidation pathway of fatty acids, or biosynthetically. Biosynthetic thiolases catalyse the formation of acetoacetyl-CoA from two molecules of acetyl-CoA . This is one of the fundamental categories of carbon skeletal assembly patterns in biological systems and is the first step in a wide range of biosynthetic pathways [1]. Thiolase are usually dimeric or tetrameric enzymes. Within each monomer there are two similar domains related by pseudo dyad. The N-terminal of these two domains contains a large insertion of about 100 amino acids.

The clan contains the following 13 members:

ACP_syn_III ACP_syn_III_C Chal_sti_synt_C Chal_sti_synt_N FAE1_CUT1_RppA HMG_CoA_synt_C HMG_CoA_synt_N ketoacyl-synt Ketoacyl-synt_2 Ketoacyl-synt_C SpoVAD Thiolase_C Thiolase_N

Alignments

We store a range of different sequence alignments for families. As well as the seed alignment from which the family is built, we provide the full alignment, generated by searching the sequence database using the family HMM. We also generate alignments using four representative proteomes (RP) sets, the NCBI sequence database, and our metagenomics sequence database. More...

View options

We make a range of alignments for each Pfam-A family. You can see a description of each above. You can view these alignments in various ways but please note that some types of alignment are never generated while others may not be available for all families, most commonly because the alignments are too large to handle.

  Seed
(187)
Full
(7398)
Representative proteomes NCBI
(8046)
Meta
(1911)
RP15
(605)
RP35
(1328)
RP55
(1740)
RP75
(2044)
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1Cannot generate PP/Heatmap alignments for seeds; no PP data available

Key: ✓ available, x not generated, not available.

Format an alignment

  Seed
(187)
Full
(7398)
Representative proteomes NCBI
(8046)
Meta
(1911)
RP15
(605)
RP35
(1328)
RP55
(1740)
RP75
(2044)
Alignment:
Format:
Order:
Sequence:
Gaps:
Download/view:

Download options

We make all of our alignments available in Stockholm format. You can download them here as raw, plain text files or as gzip-compressed files.

  Seed
(187)
Full
(7398)
Representative proteomes NCBI
(8046)
Meta
(1911)
RP15
(605)
RP35
(1328)
RP55
(1740)
RP75
(2044)
Raw Stockholm Download   Download   Download   Download   Download   Download   Download   Download  
Gzipped Download   Download   Download   Download   Download   Download   Download   Download  

You can also download a FASTA format file containing the full-length sequences for all sequences in the full alignment.

External links

MyHits provides a collection of tools to handle multiple sequence alignments. For example, one can refine a seed alignment (sequence addition or removal, re-alignment or manual edition) and then search databases for remote homologs using HMMER3.

HMM logo

HMM logos is one way of visualising profile HMMs. Logos provide a quick overview of the properties of an HMM in a graphical form. You can see a more detailed description of HMM logos and find out how you can interpret them here. More...

Trees

This page displays the phylogenetic tree for this family's seed alignment. We use FastTree to calculate neighbour join trees with a local bootstrap based on 100 resamples (shown next to the tree nodes). FastTree calculates approximately-maximum-likelihood phylogenetic trees from our seed alignment.

Note: You can also download the data file for the tree.

Curation and family details

This section shows the detailed information about the Pfam family. You can see the definitions of many of the terms in this section in the glossary and a fuller explanation of the scoring system that we use in the scores section of the help pages.

Curation View help on the curation process

Seed source: Pfam-B_67 (release 18.0)
Previous IDs: ACP_C;
Type: Domain
Author: Mistry J
Number in seed: 187
Number in full: 7398
Average length of the domain: 89.30 aa
Average identity of full alignment: 33 %
Average coverage of the sequence by the domain: 25.98 %

HMM information View help on HMM parameters

HMM build commands:
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
Model details:
Parameter Sequence Domain
Gathering cut-off 20.6 20.6
Trusted cut-off 20.6 20.6
Noise cut-off 20.5 20.5
Model length: 90
Family (HMM) version: 5
Download: download the raw HMM for this family

Species distribution

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This visualisation provides a simple graphical representation of the distribution of this family across species. You can find the original interactive tree in the adjacent tab. More...

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Interactions

There is 1 interaction for this family. More...

ACP_syn_III

Structures

For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the ACP_syn_III_C domain has been found. There are 91 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.

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