Isolation of two novel alternative splicing variants of allograft inflammatory factor-1.
Allograft inflammatory factor-1 (AIF-1) was initially cloned from rat cardiac allografts undergoing chronic rejection. AIF-1, possessing an EF-hand-like motif, is thought to be a Ca2+ binding protein. In this study, we identified two novel alternatively spliced variants of AIF-1 by reverse-transcription polymerase chain reaction. One variant encodes an AIF-1 protein that lacks 14 amino acids corresponding to one exon. The other variant encodes a truncated AIF-1 protein due to a frameshift introduced by an 85-bp insertion, and its C-terminal region differs from that of AIF-1. Interestingly, these variants have incomplete and no EF-handlike motifs, respectively. The expression level of the latter variant is high in peripheral blood leukocytes, and it is selectively expressed in macrophage-like cell lines.
Hara
H
H
Laboratory of Clinical Pharmaceutics, Gifu Pharmaceutical University, Japan.
Ohta
M
M
Ohta
K
K
Nishimura
M
M
Obayashi
H
H
Adachi
T
T
D017398:Alternative Splicing; D000595:Amino Acid Sequence; D001483:Base Sequence; D002135:Calcium-Binding Proteins / Q000235:genetics* / Q000378:metabolism; D006528:Carcinoma, Hepatocellular / Q000378:metabolism; D002460:Cell Line; D004268:DNA-Binding Proteins; D005091:Exons; D016368:Frameshift Mutation; D020869:Gene Expression Profiling; D006801:Humans; D007438:Introns; D008840:Microfilament Proteins; D008969:Molecular Sequence Data; D012333:RNA, Messenger; D020133:Reverse Transcriptase Polymerase Chain Reaction
C112986:AIF1 protein, human; C100745:Aif1 protein, rat; D002135:Calcium-Binding Proteins; D004268:DNA-Binding Proteins; D008840:Microfilament Proteins; D012333:RNA, Messenger