TCDB is operated by the Saier Lab Bioinformatics Group
Transporter Information:
Name: solute carrier family 43, member 1
Symbol: SLC43A1
TC: 2.A.1.44.1
Locations: 11p11.2-11.1
Aliases: R00504, PB39
GenBank: AF045584
Swiss-Prot: O75387
Accession Number: NM_003627
Old Name: prostate cancer overexpressed gene 1
PubMed (9255310): Chuaqui RF, Englert CR, Strup SE, Vocke CD, Zhuang Z, Duray PH, Bostwick DG,Linehan WM, Liotta LA, Emmert-Buck MR. Identification of a novel transcript up-regulated in a clinically aggressiveprostate carcinoma.Urology. 1997 Aug;50(2):302-7. PMID: 9255310 [PubMed - indexed for MEDLINE]

OBJECTIVES: To identify differentially expressed genes in tumor cells of patients with prostate cancer by means of tissue microdissection and targeted differential display. METHODS: RNA was recovered from pure populations of microdissected normal epithelium and invasive tumor from frozen tissue sections of a radical prostatectomy specimen. Reverse transcription-polymerase chain reaction (PCR) using arbitrary and zinc finger PCR primers was performed. RESULTS: A 130-base pair product was identified that appeared selectively in the tumor sample. DNA sequence analysis revealed it to be a clone from the expressed sequence tag database (GenBank accession R00504). Microdissection of normal epithelium and the corresponding invasive tumor was subsequently performed on a test panel of 10 prostate carcinoma specimens. Comparison of R00504 levels in normal epithelium and invasive carcinoma, using beta-actin as an internal control, showed the transcript to be substantially overexpressed in 5 of 10 carcinomas. Northern blotting revealed R00504 to be a 2.6-kilobase gene. CONCLUSIONS: A novel transcript up-regulated in an aggressive prostate carcinoma was identified using degenerate zinc finger primers in microdissected tissue samples. The approach used in this study may be helpful in quantitative comparison of known genes and identification of novel genes in microdissected human tissue samples.

PubMed (9722952): Cole KA, Chuaqui RF, Katz K, Pack S, Zhuang Z, Cole CE, Lyne JC, Linehan WM,Liotta LA, Emmert-Buck MR. cDNA sequencing and analysis of POV1 (PB39): a novel gene up-regulated inprostate cancer.Genomics. 1998 Jul 15;51(2):282-7. PMID: 9722952 [PubMed - indexed for MEDLINE]

We recently identified a novel gene (PB39) (HGMW-approved symbol POV1) whose expression is up-regulated in human prostate cancer using tissue microdissection-based differential display analysis. In the present study we report the full-length sequencing of PB39 cDNA, genomic localization of the PB39 gene, and genomic sequence of the mouse homologue. The full-length human cDNA is 2317 nucleotides in length and contains an open reading frame of 559 amino acids which does not show homology with any reported human genes. The N-terminus contains charged amino acids and a helical loop pattern suggestive of an srp leader sequence for a secreted protein. Fluorescence in situ hybridization using PB39 cDNA as probe mapped the gene to chromosome 11p11.1-p11.2. Comparison of PB39 cDNA sequence with murine sequence available in the public database identified a region of previously sequenced mouse genomic DNA showing 67% amino acid sequence homology with human PB39. Based on alignment and comparison to the human cDNA the mouse genomic sequence suggests there are at least 14 exons in the mouse gene spread over approximately 100 kb of genomic sequence. Further analysis of PB39 expression in human tissues shows the presence of a unique splice variant mRNA that appears to be primarily associated with fetal tissues and tumors. Interestingly, the unique splice variant appears in prostatic intraepithelial neoplasia, a microscopic precursor lesion of prostate cancer. The current data support the hypothesis that PB39 plays a role in the development of human prostate cancer and will be useful in the analysis of the gene product in further human and murine studies.

>O75387|LAT3_HUMAN Large neutral amino acids transporter small subunit 3 - Homo sapiens (Human).