Molecular Target Synopsis
Domains and Structures
Drugs and Clinical Candidates
Ligand Efficiency Plot
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
Germline Genetics

SMAD1 (Q15797) - Overview - Molecular Target Synopsis


SMAD1, Mothers against decapentaplegic homolog 1
UniProt Q15797

Also Known as SMAD1_HUMAN, SMAD1, BSP1, MADH1, MADR1

Transcriptional modulator activated by BMP (bone morphogenetic proteins) type 1 receptor kinase. SMAD1 is a receptor-regulated SMAD (R-SMAD). SMAD1/OAZ1/PSMB4 complex mediates the degradation of the CREBBP/EP300 repressor SNIP1. May act synergistically with SMAD4 and YY1 in bone morphogenetic protein (BMP)-mediated cardiac-specific gene expression. Found in a complex with SMAD4 and YY1. Interacts with HGS, NANOG and ZCCHC12 (By similarity). Upon C-terminus phosphorylation: forms trimers with another SMAD1 and the co-SMAD SMAD4. Interacts with PEBP2-alpha subunit, CREB-binding protein (CBP), p300, SMURF1, SMURF2, USP15 and HOXC8. Associates with ZNF423 or ZNF521 in response to BMP2 leading to activate transcription of BMP target genes. Interacts with SKOR1. Interacts (via MH2 domain) with LEMD3. Binding to LEMD3 results in at least a partial reduction of receptor-mediated phosphorylation. Forms a ternary complex with PSMB4 and OAZ1 before PSMB4 is incorporated into the 20S proteasome. Found in a macromolecular complex with FAM83G. Interacts (via MH2 domain) with FAM83G (via MH2 domain); in a SMAD4-independent manner. Interacts with ZC3H3 (By similarity). Interacts with TMEM119 (By similarity). Interacts (via MH1 and MH2 domains) with ZNF8 (By similarity). Interacts with RANBP3L; the interaction increases when SMAD1 is not phosphorylated and mediates SMAD1 nuclear export (PubMed:25755279).

Inspect Structure
See all 3D Structures for SMAD1

Isoforms / Transcripts (Protein Coding)

Sub-cellular localization

UniProt: SMAD1 is active in the following subcellular-locations: cytoplasm, nucleus.
GO terms: SMAD1 is active in the following subcellular-locations: cytoplasm, cytosol, integral component of membrane, intracellular, nuclear inner membrane, nucleoplasm, nucleus, protein-containing complex, SMAD protein complex, transcription factor complex.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project SMAD1 has gain in 0 cell-lines, loss in 3 cell-lines and no signal in 1002 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: OVCAR_3, HCC_2998, NCI_H522

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: SK-N-FI, NALM-6, NAMALWA

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: HUVEC, SK-N-SH, HSMM

(see details)

3D Structures

For SMAD1 there are:
11 structures (16 chains) solved
0 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

SMAD1 has been screened with compounds ( bioactivities). (see details)