LapD, LAP, Leucine aminopeptidase P
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Lap-D using the Feature Mapper tool.
The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).
The LapP protein in earlyembryos is present in an insoluble form and is thought to be membrane orvesicle associated.
Activity is highest in larvae and adults. It is found mainly in the gut but is also found in the Malpighian tubules.
JBrowse - Visual display of RNA-Seq signals
View Dmel\Lap-D in JBrowse3-98.3
No recombinants with Lap-A.
Please Note This section lists cDNAs and ESTs that fall within the genomic extent of the gene model, which may include cDNAs and ESTs of genes within introns, or of overlapping genes. Please see JBrowse for alignment of the cDNAs and ESTs to the gene model.
For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.
A screen to identify modifiers for the Leucine aminopeptidase locates them on the X, second and third chromosomes.
Lap-A and Lap-D gene products may generate tetramers and dimers of polypeptide subunits. The gut form (LapG) may be a tetramer, in 5 forms due to different combinations of Lap-A and Lap-D subunits. The smaller LapP (pupal hemolymph form) proposed to be a dimer in three forms. Monomers may account for the more highly mobile activities.
No difference in allele fixed in lines selected over 700 generations for high (negative) and low (positive) geotaxis.
The developmental variation and tissue distributions of LapP and LapG have been determined.
LapP and LapG expression is regulated during development: they represent part of a coordinated system for mobilizing stored protein from yolk.
Lap-D consists of two isozymes, designated LapP and LapG. In pupae most LapP activity results from LapP (pupal) and in larvae and adults from LapG (gut). LapP and LapG may be separated by electrophoresis, large differences in net electrical charge exist between LapP and LapG.
Structural gene for leucine aminopeptidase D (LAP-D), one of six such activities revealed by starch-gel electrophoresis and a staining with L-leucil-B-napthylamide and Fast Black K salt; enzyme monomeric; molecular weight = 280,000 daltons; pH optimum 7.6; may be Zn metalloenzyme. Found in larvae and pupae, but not adults; highest in young larvae. Localized to larval midgut where levels are induced by dietary substrate.
Characterization of LAP genes "Lap-A" and "Lap-D" from the distribution and enzymatic activity of their proteins reveals a striking resemblance to the description of Jonah genes in 99C ("Jon99Co", "Jon99Ci", "Jon99Cii" and "Jon99Ciii") and 99F ("Jon99Fi" and "Jon99Fii") and the pattern of expression of their transcripts. At least one of the Jonah genes in 99C or 99F may correspond to "Lap-A" or "Lap-D".
A third, unnamed and uncharacterized allele is alluded to by Sakai et al. (1968).