Gene / secreted extracellular protein · BEGINNER LESSON
ADAMTSL1
ADAMTSL1 is a human protein-coding gene that makes a secreted ADAMTS-like protein, also called punctin-1. The protein lacks the protease parts found in active ADAMTS enzymes, so it is not described here as an enzyme that cuts other molecules.
What ADAMTSL1 is
ADAMTSL1 is a human protein-coding gene. It produces a secreted protein called ADAMTS-like protein 1, also known as punctin-1. The sources say this protein belongs to the ADAMTS family by domain pattern, but it lacks the metalloproteinase and disintegrin-like domains that are typical of active ADAMTS proteins. That is why it is called ADAMTS-like rather than a full ADAMTS protease.
[1] 92949 - Gene ResultADAMTSL1 ADAMTS like 1 [ (human)] - NCBIwww.ncbi.nlm.nih.gov › gene [2] Adamts Subfamily D
What the protein contains and where it goes
The full-length protein is described as having thrombospondin type 1 repeats and other ADAMTS-related domains, including a PLAC domain and immunoglobulin-like domains in some descriptions. It is secreted outside the cell and can be N-glycosylated, meaning it carries attached sugar groups. One source also describes a shorter splice variant, which is an alternate messenger RNA form that can produce a shorter protein.
[1] 92949 - Gene ResultADAMTSL1 ADAMTS like 1 [ (human)] - NCBIwww.ncbi.nlm.nih.gov › gene [2] Adamts Subfamily D [3] Identification and functional analysis of an ADAMTSL1 variant associated with a complex phenotype including congenital glaucoma, craniofacial and other systemic features in a three generation human pedigree
What it may do
The sources do not give a single complete mechanism, but they consistently point to roles in the extracellular matrix, or ECM, which is the meshwork of material outside cells that helps organize tissues. ADAMTSL proteins are linked to extracellular matrix organization, and ADAMTSL1 may help with extracellular matrix assembly or related cell interactions. This is an evidence-supported functional suggestion, not a fully proven mechanism in the sources provided.
[1] 92949 - Gene ResultADAMTSL1 ADAMTS like 1 [ (human)] - NCBIwww.ncbi.nlm.nih.gov › gene [2] Adamts Subfamily D [3] Identification and functional analysis of an ADAMTSL1 variant associated with a complex phenotype including congenital glaucoma, craniofacial and other systemic features in a three generation human pedigree
How secretion and disease-related variants illustrate mechanism
A study of one ADAMTSL1 variant showed that changing a conserved tryptophan residue prevented the protein from being secreted and caused it to stay inside cells. In that experiment, the altered protein also reduced secretion of the normal protein, which is called a dominant negative effect. The study also notes that thrombospondin type 1 repeats can carry C-mannosylation and O-fucosylation, two sugar-based modifications that can affect secretion of proteins with these repeats.
Limitations of what is known
The sources emphasize that little is known about ADAMTSL1 compared with some other family members. Expression is broad in several tissues, but expression alone does not prove a function in each tissue. The gene has multiple transcript variants, so different RNA forms can produce distinct proteins. The evidence here supports secretion and extracellular-matrix association, but not a complete map of all biological roles.
[1] 92949 - Gene ResultADAMTSL1 ADAMTS like 1 [ (human)] - NCBIwww.ncbi.nlm.nih.gov › gene [2] Adamts Subfamily D [3] Identification and functional analysis of an ADAMTSL1 variant associated with a complex phenotype including congenital glaucoma, craniofacial and other systemic features in a three generation human pedigree
SEE THE IDEA
How ADAMTSL1 is described in the sources
A human protein-coding gene.
Produces punctin-1 and related isoforms outside the cell.
The outside-of-cell scaffold where the protein may function.
Some sequence changes can block secretion and alter protein behavior.
Gene → secreted protein → extracellular matrix association; variants can disrupt secretion.
This is a simplified path from the gene to a proposed extracellular role, with one experimentally shown disruption step.
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Sources and further reading
This general lesson was generated from public source material. It explains a concept; it does not interpret a private paper or provide medical advice.
- 92949 - Gene ResultADAMTSL1 ADAMTS like 1 [ (human)] - NCBIwww.ncbi.nlm.nih.gov › gene
- Adamts Subfamily D
- Identification and functional analysis of an ADAMTSL1 variant associated with a complex phenotype including congenital glaucoma, craniofacial and other systemic features in a three generation human pedigree