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LACTB
HPA
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  • LACTB
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

LACTB
Synonyms FLJ14902, MRPL56
Gene descriptioni

Full gene name according to HGNC.

Lactamase beta
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Enzymes
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 15
Cytoband q22.2
Chromosome location (bp) 63121833 - 63142061
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

3
Ensembl ENSG00000103642 (version 109)
Entrez gene 114294
HGNC HGNC:16468
UniProt P83111 (UniProt - Evidence at protein level)
neXtProt NX_P83111
GeneCards LACTB
Antibodypedia LACTB antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Mitochondrial serine protease that acts as a regulator of mitochondrial lipid metabolism 1. Acts by decreasing protein levels of PISD, a mitochondrial enzyme that converts phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn), thereby affecting mitochondrial lipid metabolism 2. It is unclear whether it acts directly by mediating proteolysis of PISD or by mediating proteolysis of another lipid metabolism protein 3. Acts as a tumor suppressor that has the ability to inhibit proliferation of multiple types of breast cancer cells: probably by promoting decreased levels of PISD, thereby affecting mitochondrial lipid metabolism 4.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Hydrolase, Protease
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Lipid metabolism
Gene summary (Entrez)i

Useful information about the gene from Entrez

This gene encodes a mitochondrially-localized protein that has sequence similarity to prokaryotic beta-lactamases. Many of the residues responsible for beta-lactamase activity are not conserved in this protein, suggesting it may have a different enzymatic function. Increased expression of the related mouse gene was found to be associated with obesity. Alternative splicing results in multiple transcript variants encoding different protein isoforms. [provided by RefSeq, Dec 2013]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
LACTB-201
ENSP00000261893
ENST00000261893
P83111
[Direct mapping] Serine beta-lactamase-like protein LACTB, mitochondrial
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   MEMSAT3 predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005739 [mitochondrion]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006629 [lipid metabolic process]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0019216 [regulation of lipid metabolic process]
GO:0042802 [identical protein binding]
Show all
547 aa
60.7 kDa
No 0
LACTB-202
ENSP00000392956
ENST00000413507
P83111
[Direct mapping] Serine beta-lactamase-like protein LACTB, mitochondrial
Show all
Enzymes
   Peptidases
   Serine-type peptidases
   MEMSAT3 predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0005739 [mitochondrion]
GO:0005829 [cytosol]
GO:0006508 [proteolysis]
GO:0006629 [lipid metabolic process]
GO:0008233 [peptidase activity]
GO:0016787 [hydrolase activity]
GO:0019216 [regulation of lipid metabolic process]
Show all
373 aa
41.2 kDa
No 0
LACTB-203
ENSP00000454085
ENST00000557972
H0YNN5
[Direct mapping] Serine beta-lactamase-like protein LACTB, mitochondrial
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
126 aa
14.6 kDa
No 0

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