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97  structures 5711  species 3  interactions 7201  sequences 35  architectures

Family: ADK_lid (PF05191)

Summary: Adenylate kinase, active site lid

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This is the Wikipedia entry entitled "Adenylate kinase". More...

Adenylate kinase Edit Wikipedia article

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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.

Adenylate kinase, active site lid Provide feedback

Comparisons of adenylate kinases have revealed a particular divergence in the active site lid. In some organisms, particularly the Gram-positive bacteria, residues in the lid domain have been mutated to cysteines and these cysteine residues are responsible for the binding of a zinc ion. The bound zinc ion in the lid domain, is clearly structurally homologous to Zinc-finger domains. However, it is unclear whether the adenylate kinase lid is a novel zinc-finger DNA/RNA binding domain, or that the lid bound zinc serves a purely structural function [1].

Literature references

  1. Berry MB, Phillips GN Jr; , Proteins 1998;32:276-288.: Crystal structures of Bacillus stearothermophilus adenylate kinase with bound Ap5A, Mg2+ Ap5A, and Mn2+ Ap5A reveal an intermediate lid position and six coordinate octahedral geometry for bound Mg2+ and Mn2+. PUBMED:9715904 EPMC:9715904


Internal database links

External database links

This tab holds annotation information from the InterPro database.

InterPro entry IPR007862

Adenylate kinases (ADK; EC) are phosphotransferases that catalyse the Mg-dependent reversible conversion of ATP and AMP to two molecules of ADP, an essential reaction for many processes in living cells. In large variants of adenylate kinase, the AMP and ATP substrates are buried in a domain that undergoes conformational changes from an open to a closed state when bound to substrate; the ligand is then contained within a highly specific environment required for catalysis. Adenylate kinase is a 3-domain protein consisting of a large central CORE domain flanked by a LID domain on one side and the AMP-binding NMPbind domain on the other [PUBMED:17299745]. The LID domain binds ATP and covers the phosphates at the active site. The substrates first bind the CORE domain, followed by closure of the active site by the LID and NMPbind domains.

Comparisons of adenylate kinases have revealed a particular divergence in the active site lid. In some organisms, particularly the Gram-positive bacteria, residues in the lid domain have been mutated to cysteines and these cysteine residues (two CX(n)C motifs) are responsible for the binding of a zinc ion. The bound zinc ion in the lid domain is clearly structurally homologous to Zinc-finger domains. However, it is unclear whether the adenylate kinase lid is a novel zinc-finger DNA/RNA binding domain, or that the lid bound zinc serves a purely structural function [PUBMED:9715904].

Gene Ontology

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Domain organisation

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

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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 (reference proteomes) using the family HMM. We also generate alignments using four representative proteomes (RP) sets, the UniProtKB sequence database, the NCBI sequence database, and our metagenomics sequence database. More...

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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
(578)
Full
(7201)
Representative proteomes UniProt
(19818)
NCBI
(18000)
Meta
(500)
RP15
(1941)
RP35
(4501)
RP55
(6608)
RP75
(9086)
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PP/heatmap 1                

1Cannot generate PP/Heatmap alignments for seeds; no PP data available

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

Format an alignment

  Seed
(578)
Full
(7201)
Representative proteomes UniProt
(19818)
NCBI
(18000)
Meta
(500)
RP15
(1941)
RP35
(4501)
RP55
(6608)
RP75
(9086)
Alignment:
Format:
Order:
Sequence:
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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
(578)
Full
(7201)
Representative proteomes UniProt
(19818)
NCBI
(18000)
Meta
(500)
RP15
(1941)
RP35
(4501)
RP55
(6608)
RP75
(9086)
Raw Stockholm Download   Download   Download   Download   Download   Download   Download   Download   Download  
Gzipped Download   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.

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: Manual
Previous IDs: none
Type: Domain
Sequence Ontology: SO:0000417
Author: Finn RD
Number in seed: 578
Number in full: 7201
Average length of the domain: 36.30 aa
Average identity of full alignment: 47 %
Average coverage of the sequence by the domain: 15.90 %

HMM information View help on HMM parameters

HMM build commands:
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 45638612 -E 1000 --cpu 4 HMM pfamseq
Model details:
Parameter Sequence Domain
Gathering cut-off 26.6 26.6
Trusted cut-off 26.6 26.6
Noise cut-off 26.5 26.5
Model length: 36
Family (HMM) version: 14
Download: download the raw HMM for this family

Species distribution

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Archea Archea Eukaryota Eukaryota
Bacteria Bacteria Other sequences Other sequences
Viruses Viruses Unclassified Unclassified
Viroids Viroids Unclassified sequence Unclassified sequence

Selections

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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...

ADK ADK_lid ADK

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 ADK_lid domain has been found. There are 97 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 sequence.

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