TY - JOUR
T1 - Mutations in the Δ1-pyrroline 5-carboxylate dehydrogenase gene cause type II hyperprolinemia
AU - Geraghty, Michael T.
AU - Vaughn, D.
AU - Nicholson, A. J.
AU - Lin, Wei Wen
AU - Jimenez-Sanchez, Gerardo
AU - Obie, Cassandra
AU - Flynn, M. P.
AU - Valle, David
AU - Hu, Chien An A.
N1 - Funding Information:
This work was supported in part by a grant from the National Eye Institute (5RO1EY02948). We thank Marisa Muñoz and Javier García Conde for assistance in obtaining Valencian control DNA samples and Sandy Muscelli for manuscript preparation. D.V. is an Investigator in the Howard Hughes Medical Institute.
Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 1998/9
Y1 - 1998/9
N2 - We surveyed Δ1-pyrroline 5-carboxylate dehydrogenase genes from four patients with hyperprolinemia type II using RT-PCR amplification, genomic PCR amplification and direct sequencing. We found four mutant alleles, two with frameshift mutations [A7fs(-1) and G521fs(+1)] and two with missense mutations (S352L and P16L). To test the functional consequences of three of these, we expressed them in a P5CDh-deficient strain of Saccharomyces cerevisiae. In contrast to wild-type human P5CDh, yeast expressing S352L and G521fs(+1) failed to grow on proline and had no detectable P5CDh activity. The P16L allele, however, produced fully functional P5CDh and subsequent analysis suggests that it is polymorphic in the relevant (Spanish) population. Interestingly, the G521fs(+1) allele segregates in the large Irish Traveller pedigree used to define the HPII phenotype. To our knowledge, this is the first description of the molecular basis for this inborn error.
AB - We surveyed Δ1-pyrroline 5-carboxylate dehydrogenase genes from four patients with hyperprolinemia type II using RT-PCR amplification, genomic PCR amplification and direct sequencing. We found four mutant alleles, two with frameshift mutations [A7fs(-1) and G521fs(+1)] and two with missense mutations (S352L and P16L). To test the functional consequences of three of these, we expressed them in a P5CDh-deficient strain of Saccharomyces cerevisiae. In contrast to wild-type human P5CDh, yeast expressing S352L and G521fs(+1) failed to grow on proline and had no detectable P5CDh activity. The P16L allele, however, produced fully functional P5CDh and subsequent analysis suggests that it is polymorphic in the relevant (Spanish) population. Interestingly, the G521fs(+1) allele segregates in the large Irish Traveller pedigree used to define the HPII phenotype. To our knowledge, this is the first description of the molecular basis for this inborn error.
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U2 - 10.1093/hmg/7.9.1411
DO - 10.1093/hmg/7.9.1411
M3 - Article
C2 - 9700195
AN - SCOPUS:0031596295
VL - 7
SP - 1411
EP - 1415
JO - Human Molecular Genetics
JF - Human Molecular Genetics
SN - 0964-6906
IS - 9
ER -