Structural highlights
Disease
POF1B_HUMAN Defects in POF1B are the cause of premature ovarian failure type 2B (POF2B) [MIM:300604. An ovarian disorder defined as the cessation of ovarian function under the age of 40 years. It is characterized by oligomenorrhea or amenorrhea, in the presence of elevated levels of serum gonadotropins and low estradiol.[1]
Function
POF1B_HUMAN May be involved in ovary development.[2]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Protein phosphorylation generates a source of phosphopeptides that are presented by major histocompatibility complex class I molecules and recognized by T cells. As deregulated phosphorylation is a hallmark of malignant transformation, the differential display of phosphopeptides on cancer cells provides an immunological signature of 'transformed self'. Here we demonstrate that phosphorylation can considerably increase peptide binding affinity for HLA-A2. To understand this, we solved crystal structures of four phosphopeptide-HLA-A2 complexes. These identified a novel peptide-binding motif centered on a solvent-exposed phosphate anchor. Our findings indicate that deregulated phosphorylation can create neoantigens by promoting binding to major histocompatibility complex molecules or by affecting the antigenic identity of presented epitopes. These results highlight the potential of phosphopeptides as novel targets for cancer immunotherapy.
Phosphorylation-dependent interaction between antigenic peptides and MHC class I: a molecular basis for the presentation of transformed self.,Mohammed F, Cobbold M, Zarling AL, Salim M, Barrett-Wilt GA, Shabanowitz J, Hunt DF, Engelhard VH, Willcox BE Nat Immunol. 2008 Nov;9(11):1236-43. Epub 2008 Oct 5. PMID:18836451[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Lacombe A, Lee H, Zahed L, Choucair M, Muller JM, Nelson SF, Salameh W, Vilain E. Disruption of POF1B binding to nonmuscle actin filaments is associated with premature ovarian failure. Am J Hum Genet. 2006 Jul;79(1):113-9. Epub 2006 May 26. PMID:16773570 doi:S0002-9297(07)60012-3
- ↑ Lacombe A, Lee H, Zahed L, Choucair M, Muller JM, Nelson SF, Salameh W, Vilain E. Disruption of POF1B binding to nonmuscle actin filaments is associated with premature ovarian failure. Am J Hum Genet. 2006 Jul;79(1):113-9. Epub 2006 May 26. PMID:16773570 doi:S0002-9297(07)60012-3
- ↑ Mohammed F, Cobbold M, Zarling AL, Salim M, Barrett-Wilt GA, Shabanowitz J, Hunt DF, Engelhard VH, Willcox BE. Phosphorylation-dependent interaction between antigenic peptides and MHC class I: a molecular basis for the presentation of transformed self. Nat Immunol. 2008 Nov;9(11):1236-43. Epub 2008 Oct 5. PMID:18836451 doi:10.1038/ni.1660
