DNAJA1

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Description

The DNAJA1 (DnaJ heat shock protein family (Hsp40) member A1) is a protein-coding gene located on chromosome 9.

DNAJA1, a gene in humans, encodes the DnaJ homolog subfamily A member 1 protein. This protein interacts with PTTG1.

DNAJA1 acts as a co-chaperone for HSPA8/Hsc70, stimulating ATP hydrolysis but not directly facilitating the folding of unfolded proteins mediated by HSPA1A. It plays a role in protein transport into mitochondria and functions as a co-chaperone for HSPA1B, negatively regulating the translocation of BAX from the cytosol to mitochondria in response to cellular stress, thus protecting cells against apoptosis. However, DNAJA1 can also promote apoptosis in response to cellular stress induced by anisomycin or UV exposure.

DNAJA1 is also known as DJ-2, DjA1, HDJ2, HSDJ, HSJ-2, HSJ2, HSPF4, NEDD7, hDJ-2.

Associated Diseases

• cancer
• male infertility with teratozoospermia due to single gene mutation
• partial chromosome Y deletion
• spermatogenic failure 63
• spermatogenic failure 25
• congenital bilateral absence of vas deferens
• isochromosomy Yp
• spermatogenic failure 65
• spermatogenic failures 50
• spinocerebellar ataxia type 32
• partial androgen insensitivity syndrome
• spermatogenic failure 51
• spermatogenic failure, X-linked, 3
• spermatogenic failure 39
• spermatogenic failure 40
• isochromosomy Yq
• spermatogenic failure 44