MAZ and breast cancer: Our finding of the G-rich sequences and a possible G-quadruplex structure in Ras gene promoter as a site of interaction of SAF-1/MAZ and involvement of such interaction in ras expression could have a significant impact in understanding the role of SAF-1/MAZ in breast cancer and perhaps in other cancer as well due to ubiquitous presence of Ras in many cancers and its direct link to SAF-1/MAZ which is revealed in the current study.