Cloning, sequencing, and chromosomal localization of pig peripheral benzodiazepine receptor: three different forms produced by alternative splicing.
We report the molecular cloning of the cDNA sequence for pig peripheral benzodiazepine receptor (PBR) by using RT-PCR and 5'/3' terminal extension. Three different transcripts (long, middle, and short) are identified. The open reading frame (ORF) of the longest PBR mRNA encodes a deduced polypeptide of 169 amino acids with a calculated molecular weight of 18,609 Da and an estimated pI of 9.70, which corresponds to the authentic PBR of other mammalian species. The middle transcript (PBR-M) contains a 141-codon ORF, which is consistent with that of the authentic PBR, but lacks a region of 84 bp so that its encoded polypeptide lacks a region of 28 amino acids from 35 to 62 of the authentic PBR polypeptide. The short transcript (PBR-S) contains a 104-codon ORF, which overlaps that of the authentic PBR, but lacks a region of 211 bp so that its encoded polypeptide lacks a region of 65 amino acids of the N-terminal of the authentic PBR. The pig PBR gene was mapped to the telomeric end of SSC5p. In addition, PBR mRNA was the more abundant detected form in pig tissues and in warm kidney that underwent ischemia suggesting functional implications of PBR during the renal repair process.
Zhang
Keqiang
K
Institut national de la santé de la recherche médicale (INSERM), ERM 324, CHU de Poitiers, rue de la Milétrie, 86021, Poitiers, France.
Demeure
Olivier
O
Belliard
Aude
A
Goujon
Jean-Michel
JM
Favreau
Frederic
F
Desurmont
Thibault
T
Mauco
Gérard
G
Barrière
Michel
M
Carretier
Michel
M
Milan
Denis
D
Papadopoulos
Vassilios
V
Hauet
Thierry
T
D000311:Adrenal Glands / Q000378:metabolism; D017398:Alternative Splicing / Q000235:genetics*; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002874:Chromosome Mapping / Q000379:methods; D003001:Cloning, Molecular / Q000379:methods; D018076:DNA, Complementary / Q000302:isolation & purification; D005260:Female; D007668:Kidney / Q000378:metabolism; D008297:Male; D008928:Mitochondria / Q000378:metabolism; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods; D020033:Protein Isoforms; D012333:RNA, Messenger / Q000032:analysis; D018079:Receptors, GABA / Q000235:genetics* / Q000378:metabolism; D015424:Reperfusion / Q000009:adverse effects; D015427:Reperfusion Injury / Q000378:metabolism; D017422:Sequence Analysis, DNA / Q000379:methods; D013552:Swine / Q000235:genetics*; D014018:Tissue Distribution; D052096:Warm Ischemia / Q000009:adverse effects
D018076:DNA, Complementary; D020033:Protein Isoforms; D012333:RNA, Messenger; D018079:Receptors, GABA; C499229:TSPO protein, human