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189  structures 499  species 3  interactions 1695  sequences 45  architectures

Family: NTF2 (PF02136)

Summary: Nuclear transport factor 2 (NTF2) domain

Pfam includes annotations and additional family information from a range of different sources. These sources can be accessed via the tabs below.

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.

Nuclear transport factor 2 (NTF2) domain Provide feedback

This family includes the NTF2-like Delta-5-3-ketosteroid isomerase proteins.

Literature references

  1. Stewart M, Kent HM, McCoy AJ; , J Mol Biol 1998;277:635-646.: Structural basis for molecular recognition between nuclear transport factor 2 (NTF2) and the GDP-bound form of the Ras-family GTPase Ran. PUBMED:9533885 EPMC:9533885


Internal database links

External database links

This tab holds annotation information from the InterPro database.

InterPro entry IPR002075

Nuclear transport factor 2 (NTF2) is a homodimer which stimulates efficient nuclear import of a cargo protein. NTF2 binds to both RanGDP and FxFG repeat-containing nucleoporins. NTF2 folds into a cone with a deep hydrophobic cavity, the opening of which is surrounded by several negatively charged residues. RanGDP binds to NTF2 by inserting a conserved phenylalanine residue into the hydrophobic pocket of NTF2 and making electrostatic interactions with the conserved negatively charged residues that surround the cavity [PUBMED:9533885].

This entry represent the main structural domain of NTF2 and related domains which are found in other nuclear import proteins.

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 NTF2 (CL0051), which has the following description:

This superfamily contains a variety of enzymes such as Scytalone dehydratase, Delta-5-3-ketosteroid isomerase, Limonene-1,2-epoxide hydrolase among others. The family also includes presumed non-enzymatic homologues such as NTF2.

The clan contains the following 24 members:

CaMKII_AD DUF1348 DUF2358 DUF3225 DUF3804 DUF4440 DUF4467 LEH Lumazine_bd Lumazine_bd_2 MBA1 MecA_N Mtr2 NTF2 PHZA_PHZB Ring_hydroxyl_B Scytalone_dh SnoaL SnoaL_2 SnoaL_3 SnoaL_4 Tim44 VirB8 WI12

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
(43)
Full
(1695)
Representative proteomes NCBI
(2094)
Meta
(108)
RP15
(254)
RP35
(446)
RP55
(711)
RP75
(981)
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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
(43)
Full
(1695)
Representative proteomes NCBI
(2094)
Meta
(108)
RP15
(254)
RP35
(446)
RP55
(711)
RP75
(981)
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
(43)
Full
(1695)
Representative proteomes NCBI
(2094)
Meta
(108)
RP15
(254)
RP35
(446)
RP55
(711)
RP75
(981)
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: IPR002075
Previous IDs: none
Type: Domain
Author: Mian N, Bateman A, Griffiths-Jones SR
Number in seed: 43
Number in full: 1695
Average length of the domain: 119.60 aa
Average identity of full alignment: 22 %
Average coverage of the sequence by the domain: 36.72 %

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 21.0 21.0
Trusted cut-off 21.0 21.0
Noise cut-off 20.9 20.9
Model length: 118
Family (HMM) version: 15
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 are 3 interactions for this family. More...

NTF2 Ras Carot_N

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 NTF2 domain has been found. There are 189 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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