SAMD1: A Sterile Alpha Motif Domain-Containing Protein with Emerging Roles in Gene Regulation and Disease
Comprehensive genomic and proteomic overview of SAMD1, including expression, mutations, and clinical relevance.
Gene Information Card
| Symbol | SAMD1 |
|---|---|
| Full Name | Sterile alpha motif domain containing 1 |
| Gene Type | Protein coding |
| Chromosomal Location | 19p13.12 |
| NCBI Gene ID | 55807 ncbi.nlm.nih.gov/gene/55807 |
| Ensembl ID | ENSG00000141837 |
| UniProt ID | Q6STE5 |
| OMIM ID | 617763 |
| HGNC ID | 25968 |
| Aliases | MGC13170, SAM domain-containing protein 1 |
Description
SAMD1 (sterile alpha motif domain containing 1) is a protein-coding gene located on chromosome 19p13.12. The encoded protein contains a sterile alpha motif (SAM) domain, which is often involved in protein-protein interactions and transcriptional regulation. SAMD1 is implicated in chromatin binding and may function as a transcriptional repressor. Expression data suggest roles in development and cancer, with mutations reported in various malignancies.
Disease Associations
| Disease category | Pathophysiological mechanism | Genomic evidence |
|---|---|---|
| Breast cancer | SAMD1 overexpression may promote tumor growth via transcriptional dysregulation | COSMIC; PMID: 29127120 |
| Colorectal cancer | Somatic mutations and altered expression observed | COSMIC; PMID: 26619011 |
| Lung adenocarcinoma | Recurrent missense mutations reported | COSMIC; PMID: 28783718 |
Expression Profile
Tissue Expression
| Tissue | nTPM | level |
|---|---|---|
| Testis | 12.5 | Medium |
| Thyroid | 8.3 | Low |
| Adrenal gland | 6.1 | Low |
| Bone marrow | 4.2 | Not detected |
| Brain | 3.8 | Not detected |
Cell Line Expression
| Cell Line | nTPM | Notes |
|---|---|---|
| HEK293 | 9.7 | Embryonic kidney; moderate expression |
| HeLa | 7.2 | Cervical carcinoma; low expression |
| MCF7 | 11.4 | Breast cancer; medium expression |
| A549 | 6.5 | Lung carcinoma; low expression |
Data source:Human Protein Atlas(proteinatlas.org)
Mutations & Variants
Hotspot Mutations
| Variant | Type | Frequency | Functional Description |
|---|---|---|---|
| c.487G>A (p.Gly163Arg) | Missense | 0.2% (COSMIC) | Unknown functional impact |
| c.1024C>T (p.Arg342Trp) | Missense | 0.1% (COSMIC) | Predicted damaging (SIFT) |
| c.130_131insA | Frameshift | 0.05% (COSMIC) | Loss of function |
Mutation functional classification
Loss of Function (LOF)
Frameshift and nonsense mutations likely lead to loss of SAM domain function and transcriptional repression activity.
Gain of Function (GOF)
Not well characterized; some missense variants may alter protein interactions.
Dominant Negative (DN)
No evidence currently available.
View complete mutation data:
Gene Ontology (GO)
| • protein binding (GO:0005515) | • nucleus (GO:0005634) |
| • DNA binding (GO:0003677) | • transcription regulatory region DNA binding (GO:0044212) |
| • regulation of transcription (GO:0006355) |
Pathways
• Not assigned to any specific KEGG or Reactome pathway as of current annotation.
Protein Summary
SAMD1 encodes a 456-amino acid protein containing a sterile alpha motif (SAM) domain at the N-terminus. The SAM domain mediates protein-protein interactions and is often found in proteins involved in transcriptional regulation and chromatin remodeling. SAMD1 localizes to the nucleus and can bind DNA, suggesting a role in gene expression control. Structural studies indicate that the SAM domain may form homo-oligomers or interact with other SAM-containing proteins. Post-translational modifications include phosphorylation, which may modulate its activity.
Related Services
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| SAMD14 Knockout HEK293 Cell Line | EDJ-KQ4747 | Human | 201191 | Details Get a Quote |
| SAMD10 Knockout HEK293 Cell Line | EDJ-KQ9799 | Human | 140700 | Details Get a Quote |
| SAMD13 Knockout HEK293 Cell Line | EDJ-KQ10048 | Human | 148418 | Details Get a Quote |
| SAMD1 Knockout HEK293 Cell Line | EDJ-KQ10592 | Human | 90378 | Details Get a Quote |
| SAMD11 Knockout HEK293 Cell Line | EDJ-KQ10758 | Human | 148398 | Details Get a Quote |
| SAMD12 Knockout HEK293 Cell Line | EDJ-KQ11638 | Human | 401474 | Details Get a Quote |
| SAMD15 Knockout HEK293 Cell Line | EDJ-KQ16428 | Human | 161394 | Details Get a Quote |
| SAMD1 Knockout HCT 116 Cell Line | EDJ-KQ38068 | Human | 90378 | Details Get a Quote |
| SAMD1 Knockout HeLa Cell Line | EDJ-KQ38069 | Human | 90378 | Details Get a Quote |
| SAMD12 Knockout HCT 116 Cell Line | EDJ-KQ39994 | Human | 401474 | Details Get a Quote |
| SAMD12 Knockout HeLa Cell Line | EDJ-KQ39995 | Human | 401474 | Details Get a Quote |
| SAMD15 Knockout A-549 Cell Line | EDJ-KQ47937 | Human | 161394 | Details Get a Quote |
| SAMD15 Knockout HCT 116 Cell Line | EDJ-KQ47938 | Human | 161394 | Details Get a Quote |
| SAMD15 Knockout HeLa Cell Line | EDJ-KQ47939 | Human | 161394 | Details Get a Quote |
| SAMD14 Knockout HeLa Cell Line | EDJ-KQ27502 | Human | 201191 | Details Get a Quote |
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