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IGFL: A secreted family with conserved cysteine residues and similarities to the IGF superfamily.
- Source :
-
Genomics [Genomics] 2006 Oct; Vol. 88 (4), pp. 513-20. Date of Electronic Publication: 2006 Aug 04. - Publication Year :
- 2006
-
Abstract
- We have discovered a family of small secreted proteins in Homo sapiens and Mus musculus. The IGF-like (IGFL) genes encode proteins of approximately 100 amino acids that contain 11 conserved cysteine residues at fixed positions, including two CC motifs. In H. sapiens, the family is composed of four genes and two pseudogenes that are referred as IGFL1 to IGFL4 and IGFL1P1 and IGFL1P2, respectively. Human IGFL genes are clustered together on chromosome 19 within a 35-kb interval. M. musculus has a single IGFL family member that is located on chromosome 7. Further, evolutionary analysis shows a lack of direct orthology between any of the four human members and the mouse gene. This relationship between the mouse and the human family members suggests that the multiple members in the human complement have arisen from recent duplication events that appear limited to the primate lineage. Structural considerations and sequence comparisons would suggest that IGFL proteins are distantly related to the IGF superfamily of growth factors. IGFL mRNAs display specific expression patterns; they are expressed in fetal tissues, breast, and prostate, and in many cancers as well, and this pattern is consistent with that of the IGF family members.
- Subjects :
- Amino Acid Sequence
Animals
Chromosomes, Human, Pair 19
Conserved Sequence
Cysteine
Evolution, Molecular
Exons
Female
Humans
Male
Mice
Molecular Sequence Data
Pseudogenes
Sequence Homology, Amino Acid
Somatomedins chemistry
Gene Expression Regulation
Multigene Family
Somatomedins genetics
Somatomedins metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 0888-7543
- Volume :
- 88
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Genomics
- Publication Type :
- Academic Journal
- Accession number :
- 16890402
- Full Text :
- https://doi.org/10.1016/j.ygeno.2006.05.012