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L-aspartase-like superfamily
SCOP classification
Superfamily statistics
Functional annotation
| General category | Metabolism |
| Detailed category | Amino acids metabolism and transport |
Function annotation of SCOP domain superfamilies
InterPro annotation
| Cross references | IPR008948 SSF48557 Protein matches |
| Abstract | The enzyme L-aspartate ammonia-lyase (aspartase) catalyses the reversible deamination of the amino acid L-aspartic acid, using a carbanion mechanism to produce fumaric acid and ammonium ion. Aspartases from different organisms show high sequence homology, and this homology extends to functionally related enzymes such as the class II fumarases, the argininosuccinate and adenylosuccinate lyases. The high-resolution structure of aspartase reveals a monomer that is composed of three domains oriented in an elongated S-shape [ 9230045]. The central domain, comprised of five-helices, provides the subunit contacts in the functionally active tetramer. The active sites are located in clefts between the subunits and structural and mutagenic studies have identified several of the active site functional groups. A separate regulatory site has been identified. The substrate, aspartic acid, can also play the role of an activator, binding at this site along with a required divalent metal ion. |
InterPro database
PDBeMotif information about ligands, sequence and structure motifs
PDBeMotif resource
Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation ]
Internal database links
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Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry
out SCOP domain assignments to all genomes at the superfamily level.
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Alignments of sequences to 18 models
in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical
are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.
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Browse and view proteins in genomes which have
different domain combinations including a L-aspartase-like domain.
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Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.
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Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.
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There are 18 hidden Markov models representing the L-aspartase-like superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.
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Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]
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