DNA-mismatch repair (MMR), a conserved process that involves correcting errors made during DNA synthesis, is crucial to the maintenance of genomic integrity. Lack of a functional DNA-mismatch repair pathway is a common characteristic of several different types of human cancers, either due to an MMR gene mutation or promoter-methylation gene silencing. MLH1 is a human homolog of the E. coli DNA mismatch repair gene mutL, consistent with the characteristic alterations in microsatellite sequences (RER+ phenotype) found in hereditary nonpolyposis colon cancer (HNPCC). MLH1 is an integral part of the protein complex responsible for mismatch repair expressed in lymphocytes, heart, colon, breast, lung, spleen, testis, prostate, thyroid and gall bladder, and is methylated in several ovarian tumors. Loss of MLH1 protein expression is associated with a mutated phenotype, microsatellite instability and a predisposition to cancer. In hereditary nonpolyposis colorectal cancer (HNPCC), an autosomal dominant inherited cancer syndrome that signifies a high risk of colorectal and various other types of cancer, the MLH1 gene exhibits a pathogenic mutation. Inactivation of the MLH1 gene causes genome instability and predisposition to cancer. MLH1 also plays a role in meiotic recombination.

FCC2; COCA2; HNPCC

p40692

4292

Human,Monkey

WB,IHC,IF,ICC

WB 1:500-1:2000
IHC 1:200-1:1000
IF 1:100-1:400
ICC 1:200-1:1000

Mouse IgG1

Mouse

Purified recombinant fragment of MLH1 (aa381-483) expressed in E. Coli.

85kDa

PBS, pH 7.4, 40% glycerol, and 0.01% sodium azide.

Store at 4℃ short term. Store at -20℃ long term. Avoid freeze / thaw cycle.