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CHM

Chr Xq21.2

CHM Rab escort protein

Aliases:
REP-1
MANE:
ENST00000357749.7

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • DDG2P

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Retinal disorders

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Glaucoma (developmental)

  • Intellectual disability

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Structural eye disease

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Fetal anomalies

Disease associations (Open Targets)

  • choroideremia

    0.81
  • Retinal dystrophy

    0.57
  • retinitis pigmentosa

    0.56
  • eye disorder

    0.37
  • night blindness

    0.27
  • Chorioretinal atrophy

    0.27
  • Abnormality of the eye

    0.26
  • hereditary disease

    0.20
  • cancer

    0.10
  • Progressive cone dystrophy

    0.09

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Rab proteins geranylgeranyltransferase component A 1

Substrate-binding subunit of the Rab geranylgeranyltransferase (GGTase) complex. Binds unprenylated Rab proteins and presents the substrate peptide to the catalytic component B composed of RABGGTA and RABGGTB, and remains bound to it after the geranylgeranyl transfer reaction. The component A is thought to be regenerated by transferring its prenylated Rab back to the donor membrane. Besides, a pre-formed complex consisting of CHM and the Rab GGTase dimer (RGGT or component B) can bind to and prenylate Rab proteins; this alternative pathway is proposed to be the predominant pathway for Rab protein geranylgeranylation

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.