MMS19 nucleotide excision repair protein homolog - Q96T76 (MMS19_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

Key component of the cytosolic iron-sulfur protein assembly (CIA) complex, a multiprotein complex that mediates the incorporation of iron-sulfur cluster into apoproteins specifically involved in DNA metabolism and genomic integrity. In the CIA complex, MMS19 acts as an adapter between early-acting CIA components and a subset of cellular target iron-sulfur proteins such as ERCC2/XPD, FANCJ and RTEL1, thereby playing a key role in nucleotide excision repair (NER), homologous recombination-mediated double-strand break DNA repair, DNA replication and RNA polymerase II (POL II) transcription (PubMed:22678362, PubMed:22678361, PubMed:29225034, PubMed:23585563). As part of the mitotic spindle-associated MMXD complex, plays a role in chromosome segregation, probably by facilitating iron-sulfur cluster assembly into ERCC2/XPD (PubMed:20797633). Indirectly acts as a transcriptional coactivator of estrogen receptor (ER), via its role in iron-sulfur insertion into some component of the TFIIH-machinery (PubMed:11279242). UniProt
Pathway Maps
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Subunit Structure
Component of the CIA complex (PubMed:22678362, PubMed:22678361, PubMed:23585563). In the CIA complex, interacts directly with CIAO2B and CIAO3 (PubMed:23585563). Component of the MMXD complex, composed of CIAO1, ERCC2, CIAO2B, MMS19 and SLC25A5 (PubMed:20797633). Interacts with CIAO2B; the interaction is direct (PubMed:20797633). Interacts with ERCC2/XPD; the interaction is direct (PubMed:11071939, PubMed:23585563). Interacts with ERCC3/XPB and NCOA3/RAC3 (PubMed:11071939, PubMed:11279242). Interacts with RTEL1; the interaction mediates the association of RTEL1 with the CIA complex (PubMed:22678361, PubMed:23585563). Interacts with BRIP1 (PubMed:23585563). UniProt
  • Isoforms: 6 , currently showing only the 'canonical' sequence.
This protein in other organisms (by gene name):
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Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from the SWISS-MODEL Repository  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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