PANK2

Isoform 1

Mitochondrial isoform that catalyzes the phosphorylation of pantothenate to generate 4'-phosphopantothenate in the first and rate-determining step of coenzyme A (CoA) synthesis (PubMed:15659606, PubMed:16272150, PubMed:17242360, PubMed:17825826). Required for angiogenic activity of umbilical vein of endothelial cells (HUVEC) (PubMed:30221726).

Isoform 4

Cytoplasmic isoform that catalyzes the phosphorylation of pantothenate to generate 4'-phosphopantothenate in the first and rate-determining step of coenzyme A (CoA) synthesis.

Neurodegeneration with brain iron accumulation 1

NBIA1

Autosomal recessive neurodegenerative disorder associated with iron accumulation in the brain, primarily in the basal ganglia. Clinical manifestations include progressive muscle spasticity, hyperreflexia, muscle rigidity, dystonia, dysarthria, and intellectual deterioration which progresses to severe dementia over several years. It is clinically classified into classic, atypical, and intermediate phenotypes. Classic forms present with onset in first decade, rapid progression, loss of independent ambulation within 15 years. Atypical forms have onset in second decade, slow progression, maintenance of independent ambulation up to 40 years later. Intermediate forms manifest onset in first decade with slow progression or onset in second decade with rapid progression. Patients with early onset tend to also develop pigmentary retinopathy, whereas those with later onset tend to also have speech disorders and psychiatric features. All patients have the 'eye of the tiger' sign on brain MRI.

None

The disease is caused by variants affecting the gene represented in this entry.

Cofactor biosynthesis; coenzyme A biosynthesis; CoA from (R)-pantothenate: step 1/5.

Synthesized as a 62-kDa precursor which is proteolytically processed by the mitochondrial-processing peptidase (MPP) via a 59-kDa intermediate to yield the mature mitochondrial 48-kDa subunit.

Belongs to the type II pantothenate kinase family.

Expressed in the brain (at protein level) (PubMed:15659606, PubMed:17825826). Ubiquitous (PubMed:11479594). Highly expressed in the testis (PubMed:17825826). Expressed in the umbilical vein endothelial cells (HUVEC) (PubMed:30221726).

• Isoform 1
• Mitochondrion
• Mitochondrion intermembrane space
• Nucleus
• Localizes predominantly to the mitochondria and to a lesser extent to the nucleus. Found in both the mitochondria and the nucleus throughout the cell cycle, with the exception of the G2/M phase when it is restricted to mitochdondria.
• Isoform 2
• Cytoplasm
• Isoform 3
• Cytoplasm
• Isoform 4
• Cytoplasm

C20orf48, PANK2, hPanK2, Pantothenic acid kinase 2

• entrezGene:80025
• omim:606157
• swissprot:Q9BZ23

Proteins

62681Da