SEMA4D

Sema domain, immunoglobulin domain (Ig), transmembrane domain (TM) and short cytoplasmic domain, (semaphorin) 4D

PDB rendering based on 1olz.
Identifiers
Symbols SEMA4D; C9orf164; CD100; FLJ33485; FLJ34282; FLJ39737; FLJ46484; M-sema-G; MGC169138; MGC169141; SEMAJ; coll-4
External IDs OMIM601866 MGI109244 HomoloGene21282 GeneCards: SEMA4D Gene
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 10507 20354
Ensembl ENSG00000187764 ENSMUSG00000021451
UniProt Q92854 Q6GTM9
RefSeq (mRNA) NM_001142287.1 NM_013660.3
RefSeq (protein) NP_001135759.1 NP_038688.2
Location (UCSC) Chr 9:
91.98 – 92.11 Mb
Chr 13:
51.8 – 51.89 Mb
PubMed search [1] [2]

Semaphorin-4D (SEMA4D) also known as Cluster of Differentiation 100 (CD100), is a protein of the semaphorin family that in humans is encoded by the SEMA4D gene.[1]

Contents

Function

Semaphorin 4D (Sema 4D) is an axon guidance molecule which is secreted by oligodendrocytes and induces growth cone collapse in the central nervous system. By binding plexin B1 receptor it functions as an R-Ras GTPase-activating protein (GAP) and repels axon growth cones in both the mature central nervous system.[2]

In the immune system, CD100 binds CD72 to activate B cells and dendritic cells, though much about this interaction is still under investigation.[3][4]

See also

References

  1. ^ "Entrez Gene: SEMA4D sema domain, immunoglobulin domain (Ig), transmembrane domain (TM) and short cytoplasmic domain, (semaphorin) 4D". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=10507. 
  2. ^ Ito Y, Oinuma I, Katoh H, Kaibuchi K, Negishi M (July 2006). "Sema4D/plexin-B1 activates GSK-3β through R-Ras GAP activity, inducing growth cone collapse". EMBO Reports 7 (7): 704–9. doi:10.1038/sj.embor.7400737. PMC 1500830. PMID 16799460. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1500830. 
  3. ^ Kumanogoh A, Watanabe C, Lee I, Wang X, Shi W, Araki H, Hirata H, Iwahori K, Uchida J, Yasui T, Matsumoto M, Yoshida K, Yakura H, Pan C, Parnes JR, Kikutani H (November 2000). "Identification of CD72 as a lymphocyte receptor for the class IV semaphorin CD100: a novel mechanism for regulating B cell signaling". Immunity 13 (5): 621–31. doi:10.1016/S1074-7613(00)00062-5. PMID 11114375. 
  4. ^ Ishida I, Kumanogoh A, Suzuki K, Akahani S, Noda K, Kikutani H (August 2003). "Involvement of CD100, a lymphocyte semaphorin, in the activation of the human immune system via CD72: implications for the regulation of immune and inflammatory responses". Int. Immunol. 15 (8): 1027–34. doi:10.1093/intimm/dxg098. PMID 12882840. 

Further reading

External links