G2Cdb::Gene report

Gene id
Gene symbol
Homo sapiens
brain abundant, membrane attached signal protein 1
G00000904 (Mus musculus)

Databases (7)

ENSG00000176788 (Ensembl human gene)
10409 (Entrez Gene)
663 (G2Cdb plasticity & disease)
BASP1 (GeneCards)
605940 (OMIM)
Marker Symbol
Protein Sequence
P80723 (UniProt)

Synonyms (4)

  • CAP-23
  • CAP23
  • NAP-22
  • NAP22

Literature (12)

Pubmed - other

  • The assessment of methylated BASP1 and SRD5A2 levels in the detection of early hepatocellular carcinoma.

    Tsunedomi R, Ogawa Y, Iizuka N, Sakamoto K, Tamesa T, Moribe T and Oka M

    Department of Digestive Surgery of Applied Molecular Bioscience, Yamaguchi University Postgraduate School of Medicine, Ube, Yamaguchi 755-8505, Japan.

    We previously identified BASP1 and SRD5A2 as novel hepatocellular carcinoma (HCC) methylation markers from among more than 10,000 screened genes. The present study aimed to improve the diagnostic potential of these genes. We compared the methylation status at distinct regions of the BASP1 and SRD5A2 genes using quantitative methylation-specific PCR, in 46 sets of HCC and corresponding non-tumor liver tissues. We also examined how their epigenetic status affected transcript levels in tissues and several hepatoma cell lines. We found that BASP1 and SRD5A2 loci were methylated in greater than 50% of the HCC tissues. Inverse correlations were identified between the methylation status and transcript levels in the tissues. Assessment of CpG island methylation rate of BASP1 and SRD5A2 resulted in different diagnostic powers for discriminating HCC even in the same CpG island. A combination analysis of BASP1 and SRD5A2 resulted in the optimum diagnostic performance (84.8% sensitivity and 91.3% specificity) with a maximal area under the receiver operating characteristic curve of 0.878. Even in patients with early HCC (well-differentiated, TNM stage I and small in diameter) and those negative for serum alpha-fetoprotein, combination analysis enabled an accurate diagnosis of HCC. In vitro analysis also showed that BASP1 and SRD5A2 transcripts were epigenetically regulated by methylation and acetylation. These results suggest that combined analysis of methylated BASP1 and SRD5A2 may prove useful in the accurate diagnosis of HCC, especially early HCC.

    International journal of oncology 2010;36;1;205-12

  • Proteomic analysis of membrane microdomain-associated proteins in the dorsolateral prefrontal cortex in schizophrenia and bipolar disorder reveals alterations in LAMP, STXBP1 and BASP1 protein expression.

    Behan AT, Byrne C, Dunn MJ, Cagney G and Cotter DR

    Department of Psychiatry, Royal College of Surgeons in Ireland, RCSI ERC, Smurfit Building, Beaumont Hospital, Dublin 9, Ireland.

    The dorsolateral prefrontal cortex (dlpfc) is strongly implicated in the pathogenesis of schizophrenia (SCZ) and bipolar disorder (BPD) and, within this region, abnormalities in glutamatergic neurotransmission and synaptic function have been described. Proteins associated with these functions are enriched in membrane microdomains (MM). In the current study, we used two complementary proteomic methods, two-dimensional difference gel electrophoresis and one-dimensional sodium dodecyl sulphate polyacrylamide gel electrophoresis followed by reverse phase-liquid chromatography-tandem mass spectrometry (RP-LC-MS/MS) (gel separation liquid chromatography-tandem mass spectrometry (GeLC-MS/MS)) to assess protein expression in MM in pooled samples of dlpfc from SCZ, BPD and control cases (n=10 per group) from the Stanley Foundation Brain series. We identified 16 proteins altered in one/both disorders using proteomic methods. We selected three proteins with roles in synaptic function (syntaxin-binding protein 1 (STXBP1), brain abundant membrane-attached signal protein 1 (BASP1) and limbic system-associated membrane protein (LAMP)) for validation by western blotting. This revealed significantly increased expression of these proteins in SCZ (STXBP1 (24% difference; P<0.001), BASP1 (40% difference; P<0.05) and LAMP (22% difference; P<0.01)) and BPD (STXBP1 (31% difference; P<0.001), BASP1 (23% difference; P<0.01) and LAMP (20% difference; P<0.01)) in the Stanley brain series (n=20 per group). Further validation in dlpfc from the Harvard brain subseries (n=10 per group) confirmed increased protein expression in SCZ of STXBP1 (18% difference; P<0.0001), BASP1 (14% difference; P<0.0001) but not LAMP (20% difference; P=0.14). No significant differences in STXBP1, BASP1 or LAMP protein expression in BPD dlpfc were observed. This study, through proteomic assessments of MM in dlpfc and validation in two brain series, strongly implicates LAMP, STXBP1 and BASP1 in SCZ and supports the view of a neuritic and synaptic dysfunction in the neuropathology of SCZ.

    Funded by: Wellcome Trust

    Molecular psychiatry 2009;14;6;601-13

  • Mutational screening of BASP1 and transcribed processed pseudogene TPPsig-BASP1 in patients with Möbius syndrome.

    Uzumcu A, Candan S, Toksoy G, Uyguner ZO, Karaman B, Eris H, Tatli B, Kayserili H, Yuksel A, Geckinli B, Yuksel-Apak M and Basaran S

    Department of Medical Genetics, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.

    Möbius syndrome is a rare disorder primarily characterized by congenital facial palsy, frequently accompanied by ocular abduction anomalies and occasionally associated with orofacial, limb and musculoskeletal malformations. Abnormal development of cranial nerves V through XII underlines the disease pathogenesis. Although a genetic etiology for Möbius syndrome was proposed, molecular genetic studies to identify the causative gene(s) are scarce. In this study, we selected two candidate genes. One is BASP1 residing in a human chromosome 5p15.1-p15.2, syntenic to mouse chromosome 15qA2-qB2, to which a mouse model with facial nerve anomalies was mapped. The other is transcribed processed pseudogene TPPsig-BASP1, which is located on chromosome 13q flanking the putative locus for Möbius syndrome and might be involved in the regulation of the transcripts encoded by BASP1. Mutation analyses in nineteen patients excluded these genes as being candidates for Möbius syndrome.

    Journal of genetics and genomics = Yi chuan xue bao 2009;36;4;251-6

  • Dynamic interaction between WT1 and BASP1 in transcriptional regulation during differentiation.

    Green LM, Wagner KJ, Campbell HA, Addison K and Roberts SG

    Faculty of Life Sciences, The Michael Smith Building University of Manchester Oxford Road, Manchester M13 9PT, UK.

    The Wilms' tumour suppressor protein WT1 plays a central role in the development of the kidney and also other organs. WT1 can act as a transcription factor with highly context-specific activator and repressor functions. We previously identified Brain Acid Soluble Protein 1 (BASP1) as a transcriptional cosuppressor that can block the transcriptional activation function of WT1. WT1 and BASP1 are co-expressed during nephrogenesis and both proteins ultimately become restricted to the podocyte cells of the adult kidney. Here, we have analysed the WT1/BASP1 complex in a podocyte precursor cell line that can be induced to differentiate. Chromatin immunoprecipitation revealed that WT1 and BASP1 occupy the promoters of the Bak, c-myc and podocalyxin genes in podocyte precursor cells. During differentiation-dependent upregulation of podocalyxin expression BASP1 occupancy of the podocalyxin promoter is reduced compared to that of WT1. In contrast, the repressive WT1/BASP1 occupancy of the c-myc and Bak promoters is maintained and these genes are downregulated during the differentiation process. We provide evidence that the regulation of BASP1 promoter occupancy involves the sumoylation of BASP1. Our results reveal a dynamic cooperation between WT1 and BASP1 in the regulation of gene expression during differentiation.

    Funded by: Biotechnology and Biological Sciences Research Council; Cancer Research UK; Wellcome Trust; Worldwide Cancer Research: 02-0275

    Nucleic acids research 2009;37;2;431-40

  • Identification of novel aberrant methylation of BASP1 and SRD5A2 for early diagnosis of hepatocellular carcinoma by genome-wide search.

    Moribe T, Iizuka N, Miura T, Stark M, Tamatsukuri S, Ishitsuka H, Hamamoto Y, Sakamoto K, Tamesa T and Oka M

    Research Group, Molecular Diagnostics R&D Department, Roche Diagnostics K.K., Minato-ku, Tokyo 105-0014, Japan.

    A genome-wide study using expression profiles of 12,600 genes was conducted to identify methylated genes that could be used for early diagnosis of hepatocellular carcinoma (HCC). Of the 12,600 genes examined, we identified 23 genes with significantly lower expression levels in HCC tissues than in non-HCC liver tissues by our statistical and CpG mapping tests. Of these 23 genes, methylation analysis by direct sequencing with bisulfite treatment determined 4 genes that were aberrantly methylated in 20 HCC samples of TNM stages I and II. Further methylation analysis of the 4 genes by quantitative sequencing with 20 HCCs and the corresponding non-tumor liver tissues from an independent cohort of HCC patients revealed that 2 genes, BASP1 and SRD5A2, were aberrantly methylated in only HCC tissues, though not in any corresponding non-tumor liver tissues. Notably, in the cohort we found that BASP1 or SRD5A2 were aberrantly methylated when a cut-off value of 30% in the methylation rate was used, in all cases of 11 HCCs of TNM stages I and II, of 10 well-differentiated HCCs and of 4 small HCCs <2 cm in maximum diameter, but in none of the 20 corresponding non-HCC livers. Methylation-specific PCR for BASP1 and SRD5A2 reproduced the same results observed by direct sequencing. These results indicate that BASP1 and SRD5A2 might serve as useful biomarkers for early diagnosis of HCC.

    International journal of oncology 2008;33;5;949-58

  • Global, in vivo, and site-specific phosphorylation dynamics in signaling networks.

    Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P and Mann M

    Center for Experimental BioInformatics, Department of Biochemistry and Molecular Biology, University of Southern Denmark, DK-5230 Odense, Denmark.

    Cell signaling mechanisms often transmit information via posttranslational protein modifications, most importantly reversible protein phosphorylation. Here we develop and apply a general mass spectrometric technology for identification and quantitation of phosphorylation sites as a function of stimulus, time, and subcellular location. We have detected 6,600 phosphorylation sites on 2,244 proteins and have determined their temporal dynamics after stimulating HeLa cells with epidermal growth factor (EGF) and recorded them in the Phosida database. Fourteen percent of phosphorylation sites are modulated at least 2-fold by EGF, and these were classified by their temporal profiles. Surprisingly, a majority of proteins contain multiple phosphorylation sites showing different kinetics, suggesting that they serve as platforms for integrating signals. In addition to protein kinase cascades, the targets of reversible phosphorylation include ubiquitin ligases, guanine nucleotide exchange factors, and at least 46 different transcriptional regulators. The dynamic phosphoproteome provides a missing link in a global, integrative view of cellular regulation.

    Cell 2006;127;3;635-48

  • The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).

    Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Morrin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J and MGC Project Team

    The National Institutes of Health's Mammalian Gene Collection (MGC) project was designed to generate and sequence a publicly accessible cDNA resource containing a complete open reading frame (ORF) for every human and mouse gene. The project initially used a random strategy to select clones from a large number of cDNA libraries from diverse tissues. Candidate clones were chosen based on 5'-EST sequences, and then fully sequenced to high accuracy and analyzed by algorithms developed for this project. Currently, more than 11,000 human and 10,000 mouse genes are represented in MGC by at least one clone with a full ORF. The random selection approach is now reaching a saturation point, and a transition to protocols targeted at the missing transcripts is now required to complete the mouse and human collections. Comparison of the sequence of the MGC clones to reference genome sequences reveals that most cDNA clones are of very high sequence quality, although it is likely that some cDNAs may carry missense variants as a consequence of experimental artifact, such as PCR, cloning, or reverse transcriptase errors. Recently, a rat cDNA component was added to the project, and ongoing frog (Xenopus) and zebrafish (Danio) cDNA projects were expanded to take advantage of the high-throughput MGC pipeline.

    Funded by: PHS HHS: N01-C0-12400

    Genome research 2004;14;10B;2121-7

  • BASP1 is a transcriptional cosuppressor for the Wilms' tumor suppressor protein WT1.

    Carpenter B, Hill KJ, Charalambous M, Wagner KJ, Lahiri D, James DI, Andersen JS, Schumacher V, Royer-Pokora B, Mann M, Ward A and Roberts SG

    School of Biological Sciences, University of Manchester, G.186 Stopford Building, Oxford Road, Manchester M13 9PT, UK.

    The Wilms' tumor suppressor protein WT1 is a transcriptional regulator that plays a key role in the development of the kidneys. The transcriptional activation domain of WT1 is subject to regulation by a suppression region within the N terminus of WT1. Using a functional assay, we provide direct evidence that this requires a transcriptional cosuppressor, which we identify as brain acid soluble protein 1 (BASP1). WT1 and BASP1 associate within the nuclei of cells that naturally express both proteins. BASP1 can confer WT1 cosuppressor activity in transfection assays, and elimination of endogenous BASP1 expression augments transcriptional activation by WT1. BASP1 is present in the developing nephron structures of the embryonic kidney and, coincident with that of WT1, its expression is restricted to the highly specialized podocyte cells of the adult kidney. Taken together, our results show that BASP1 is a WT1-associated factor that can regulate WT1 transcriptional activity.

    Funded by: Worldwide Cancer Research: 02-0275

    Molecular and cellular biology 2004;24;2;537-49

  • Assignment of brain acid-soluble protein 1 (BASP1) to human chromosome 5p15.1-->p14, differential expression in human cancer cell lines as a result of alterations in gene dosage.

    Fitzgibbon J, Neat MJ, Foot N, Hill AS, Lister TA and Gupta RK

    ICRF Medical Oncology Unit, St. Bartholomew's Hospital Medical College, Charterhouse Square, London EC1M 6BQ, England, UK. jfitzgib@hgmp.mrc.ac.uk

    Cytogenetics and cell genetics 2000;89;3-4;147-9

  • Characterization of bovine and human cDNAs encoding NAP-22 (22 kDa neuronal tissue-enriched acidic protein) homologs.

    Park S, Kim YI, Kim B, Seong C, Oh Y, Baek K and Yoon J

    Institute of Genetic Engineering and Natural Sciences, Department of Genetic Engineering, Kyung Hee University, Suwon, Korea.

    We have characterized the bovine and the human cDNAs encoding the NAP-22 (22 kDa neuronal tissue-enriched acidic protein) homologs. Both bovine and human cDNAs encode proteins of 227 amino acids. The deduced amino acid sequences of the bovine and the human proteins are 63% and 65% identical, respectively, to that of rat NAP-22 protein, strongly suggesting that both the cDNAs characterized encode NAP-22 proteins. They also share 45% and 41% amino acid sequence identities with chicken CAP-23 (23 kDa cytoskeleton associated protein). Several important protein motifs, including myristoylation and phosphorylation sites, are well conserved in sequences and positions in all three mammalian NAP-22 proteins and chicken CAP-23 proteins. The bovine cDNA was characterized further. Southern analysis of the bovine genomic DNA suggests that the bovine NAP-22 protein is encoded by a single-copy gene. RNA blot analysis revealed that the bovine gene for NAP-22 protein encodes a 1.7 kb transcript that is present only in the brain. Our data suggest that the four proteins, bovine and human NAP-22 homologs, rat NAP-22, and chicken CAP-23, have homologous functions in different organisms.

    Molecules and cells 1998;8;4;471-7

  • The BASP1 family of myristoylated proteins abundant in axonal termini. Primary structure analysis and physico-chemical properties.

    Mosevitsky MI, Capony JP, Skladchikova GYu, Novitskaya VA, Plekhanov AYu and Zakharov VV

    Division of Molecular and Radiation Biophysics, Petersburg Nuclear Physics Institute, Russia Academy of Sciences, Leningrad District.

    Proteins BASP1 and GAP-43/B-50, which are abundant in nerve endings, show a number of similar physico-chemical properties. Nevertheless, they belong to different protein families. In this work, complete amino acid sequences of bovine BASP1 and human BASP1 were established. They proved to be very similar to the sequences of rat brain protein NAP-22 and chicken brain protein CAP-23. Relatively to human BASP1 its bovine, rat and chicken analogues show 80%, 70% and 45% sequence identity respectively, confirming their membership of a definite protein family (BASP1 family). All members of BASP1 family contain several 'good' PEST sequences characteristic for short-living proteins. Conservation of PEST sequences in BASP1 of different species points to their significance for BASP1 functions. In contrast to GAP-43/B-50 showing high immunological cross-reactivity between the proteins belonging to different species of mammals, immunological properties of BASP1 are species specific. BASP1 shows both high hydrophilicity and some properties characteristic for hydrophobic proteins. These properties are caused by N-terminal myristoylation of BASP1 molecules. Unlike GAP-43/B-50, BASP1 is present in high amounts also in some non-nervous tissues: testis, kidney and lymphoid organs (spleen, thymus). So far examined characteristics, including myristoylation, peptide maps and detected by isoelectrofocusing microheterogeneity, proved to be the same for BASP1 samples isolated from both brain and non-nervous tissues. Therefore, in spite of different physiological consequences, biochemical functions of BASP1 must also be similar in different tissues.

    Biochimie 1997;79;6;373-84

Gene lists (8)

Gene List Source Species Name Description Gene count
L00000009 G2C Homo sapiens Human PSD Human orthologues of mouse PSD adapted from Collins et al (2006) 1080
L00000011 G2C Homo sapiens Human clathrin Human orthologues of mouse clathrin coated vesicle genes adapted from Collins et al (2006) 150
L00000012 G2C Homo sapiens Human Synaptosome Human orthologues of mouse synaptosome adapted from Collins et al (2006) 152
L00000016 G2C Homo sapiens Human PSP Human orthologues of mouse PSP adapted from Collins et al (2006) 1121
L00000059 G2C Homo sapiens BAYES-COLLINS-HUMAN-PSD-CONSENSUS Human cortex PSD consensus 748
L00000061 G2C Homo sapiens BAYES-COLLINS-MOUSE-PSD-CONSENSUS Mouse cortex PSD consensus (ortho) 984
L00000069 G2C Homo sapiens BAYES-COLLINS-HUMAN-PSD-FULL Human cortex biopsy PSD full list 1461
L00000071 G2C Homo sapiens BAYES-COLLINS-MOUSE-PSD-FULL Mouse cortex PSD full list (ortho) 1556
© G2C 2014. The Genes to Cognition Programme received funding from The Wellcome Trust and the EU FP7 Framework Programmes:
EUROSPIN (FP7-HEALTH-241498), SynSys (FP7-HEALTH-242167) and GENCODYS (FP7-HEALTH-241995).

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