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14  structures 260  species 0  interactions 707  sequences 11  architectures

Family: Str_synth (PF03088)

Summary: Strictosidine synthase

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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.

Strictosidine synthase Provide feedback

Strictosidine synthase (E.C. 4.3.3.2) is a key enzyme in alkaloid biosynthesis. It catalyses the condensation of tryptamine with secologanin to form strictosidine.

Literature references

  1. Bracher D, Kutchan TM; , Arch Biochem Biophys 1992;294:717-723.: Strictosidine synthase from Rauvolfia serpentina: analysis of a gene involved in indole alkaloid biosynthesis. PUBMED:1567228 EPMC:1567228


Internal database links

External database links

This tab holds annotation information from the InterPro database.

InterPro entry IPR018119

This entry represents a conserved region found in strictosidine synthase (EC), a key enzyme in alkaloid biosynthesis. It catalyses the Pictet-Spengler stereospecific condensation of tryptamine with secologanin to form strictosidine [PUBMED:18081287]. The structure of the native enzyme from the Indian medicinal plant Rauvolfia serpentina (Serpentwood) (Devilpepper) represents the first example of a six-bladed four-stranded beta-propeller fold from the plant kingdom [PUBMED:18280746].

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 Beta_propeller (CL0186), which has the following description:

This large clan contains proteins that contain beta propellers. These are composed of between 6 and 8 repeats. The individual repeats are composed of a four stranded sheet. The clan includes families such as WD40 Pfam:PF00400 where the individual repeats are modeled. The clan also includes families where the entire propeller is modeled such as Pfam:PF02239 usually because the individual repeats are not discernible. These proteins carry out a very wide diversity of functions including catalysis.

The clan contains the following 60 members:

Apc4_WD40 Arylesterase Arylsulfotran_2 Arylsulfotrans Beta_propel CNH Coatomer_WDAD CPSF_A Cytochrom_D1 DPPIV_N DUF1513 DUF1668 DUF1900 DUF2415 DUF3312 DUF4652 DUF839 eIF2A FG-GAP FG-GAP_2 Glu_cyclase_2 Gmad1 GSDH IKI3 Kelch_1 Kelch_2 Kelch_3 Kelch_4 Kelch_5 Kelch_6 Lactonase Ldl_recept_b Lgl_C LVIVD Me-amine-dh_H MRJP Nbas_N Neisseria_PilC NHL Nucleoporin_N Nup160 PD40 Pectate_lyase22 Peptidase_S9_N Phytase-like PQQ PQQ_2 PQQ_3 RAG2 RCC1 RCC1_2 Reg_prop SBBP SBP56 SdiA-regulated SGL Str_synth TcdB_toxin_midN VCBS WD40

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
(8)
Full
(707)
Representative proteomes NCBI
(1067)
Meta
(163)
RP15
(98)
RP35
(227)
RP55
(319)
RP75
(391)
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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
(8)
Full
(707)
Representative proteomes NCBI
(1067)
Meta
(163)
RP15
(98)
RP35
(227)
RP55
(319)
RP75
(391)
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
(8)
Full
(707)
Representative proteomes NCBI
(1067)
Meta
(163)
RP15
(98)
RP35
(227)
RP55
(319)
RP75
(391)
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.

Pfam alignments:

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_1533 (release 6.5)
Previous IDs: none
Type: Family
Author: Griffiths-Jones SR
Number in seed: 8
Number in full: 707
Average length of the domain: 85.90 aa
Average identity of full alignment: 36 %
Average coverage of the sequence by the domain: 22.65 %

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 20.8 20.8
Trusted cut-off 20.8 20.9
Noise cut-off 20.7 20.7
Model length: 89
Family (HMM) version: 11
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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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 Str_synth domain has been found. There are 14 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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