DNA mismatch repair protein Msh2 (Protein name
), MSH2_HUMAN from NCBI database.
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Gene name:
MSH2;
Protein name:
DNA mismatch repair protein Msh2(hMSH2);
Alternative:
MutS protein homolog 2;
Organism:
Human (Homo sapiens).
General Annotation
Sub Unit:
Heterodimer consisting of MSH2-MSH6 (MutS alpha) or MSH2-MSH3 (MutS beta). Both heterodimer form a ternary complex with MutL alpha (MLH1-PMS1). Interacts with EXO1. Part of the BRCA1-associated genome surveillance complex (BASC), which contains BRCA1, MSH2, MSH6, MLH1, ATM, BLM, PMS2 and the RAD50-MRE11-NBS1 protein complex. This association could be a dynamic process changing throughout the cell cycle and within subnuclear domains. Interacts with ATR. Interacts with SLX4/BTBD12; this interaction is direct and links MutS beta to SLX4, a subunit of different structure-specific endonucleases.
Function:
Component of the post-replicative DNA mismatch repair system (MMR). Forms two different heterodimers: MutS alpha (MSH2-MSH6 heterodimer) and MutS beta (MSH2-MSH3 heterodimer) which binds to DNA mismatches thereby initiating DNA repair. When bound, heterodimers bend the DNA helix and shields approximately 20 base pairs. MutS alpha recognizes single base mismatches and dinucleotide insertion-deletion loops (IDL) in the DNA. MutS beta recognizes larger insertion-deletion loops up to 13 nucleotides long. After mismatch binding, MutS alpha or beta forms a ternary complex with the MutL alpha heterodimer, which is thought to be responsible for directing the downstream MMR events, including strand discrimination, excision, and resynthesis. ATP binding and hydrolysis play a pivotal role in mismatch repair functions. The ATPase activity associated with MutS alpha regulates binding similar to a molecular switch: mismatched DNA provokes ADP-->ATP exchange, resulting in a discernible conformational transition that converts MutS alpha into a sliding clamp capable of hydrolysis-independent diffusion along the DNA backbone. This transition is crucial for mismatch repair. MutS alpha may also play a role in DNA homologous recombination repair. In melanocytes may modulate both UV-B-induced cell cycle regulation and apoptosis.
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Precision
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Intra-assay Precision (Precision within an assay):Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Intra-Assay CV: ≤7.1%
Inter-assay Precision (Precision between assays):Three samples of known concentration were tested in five separate assays to assess inter-assay precision.
Inter-Assay CV: ≤8.7%
Intra-assay Precision (Precision within an assay):Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Intra-Assay CV: ≤3.9%
Inter-assay Precision (Precision between assays):Three samples of known concentration were tested in five separate assays to assess inter-assay precision.
Inter-Assay CV: ≤7.7%
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Recovery
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Recovery was determined by spiking various levels of MSH2 into serum and plasma .
Sample Type
Average(%)
Recovery Range(%)
Serum
101
90-106
Plasma
99
92-105
Recovery was determined by spiking various levels of ACE into serum and plasma .
Sample Type
Average(%)
Recovery Range(%)
Serum
99
91-103
Plasma
98
93-106
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Linearity
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The linearity of the kit was assayed by testing samples spiked with appropriate concentration of MSH2 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample
1:2
1:4
1:8
1:16
serum(n=5)
96-106%
94-109%
95-106%
92-110%
EDTA plasma(n=5)
90-108%
91-106%
92-107%
94-105%
heparin plasma(n=5)
93-106%
95-104%
93-105%
93-107%
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of ACE and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample
1:2
1:4
1:8
1:16
serum(n=5)
92-105%
90-101%
95-105%
92-109%
EDTA plasma(n=5)
89-95%
93105%
89-94%
90-106%
heparin plasma(n=5)
93-104%
94-110%
101-111%
91-110%
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1);VARIANTS HNPCC1 LEU-622 AND TYR-639
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA];INVOLVEMENT IN MRTES
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Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1);VARIANT HIS-96
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]
9.
NIEHS SNPs program
Submitted (2004-04) to the EMBL/GenBank/DDBJ databases
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA];VARIANTS MET-8; CYS-43; SER-127; ASP-322 AND PHE-390
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1)
"A novel germline mutation at exon 7 of the hMSH2 gene (417 del G) in a large HNPCC Brazilian kindred." Corvello C.M.
,
Bevilacqua R.A.U.
,
Rossi B.M.
,
Simpson A.J.G.
Submitted (1998-05) to the EMBL/GenBank/DDBJ databases
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 375-425
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Cited for: MISMATCH-BINDING;CHARACTERIZATION OF VARIANT HNPCC1 PRO-524
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Cited for: INTERACTION WITH ATR;IDENTIFICATION BY MASS SPECTROMETRY
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT LYS-555;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]
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Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT ALA-2;IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS];CLEAVAGE OF INITIATOR METHIONINE [LARGE SCALE ANALYSIS]
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Cited for: VARIANTS HNPCC1 THR-305; ASN-596 DEL AND THR-834
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Cited for: VARIANTS HNPCC1 THR-110; ARG-639; LYS-647; HIS-656; THR-679; VAL-729 AND ILE-732
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Cited for: VARIANT HNPCC1 265-VAL--GLN-314 DEL;VARIANTS GLY-641 AND VAL-770
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Cited for: CHARACTERIZATION OF VARIANTS ASP-322; PHE-390; LYS-419; TYR-506; PRO-524; LEU-622 AND PHE-697
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Cited for: VARIANTS HNPCC1 GLN-246; ASP-322; SER-596 AND THR-834
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Cited for: VARIANTS HNPCC1 ILE-688 AND GLU-845;VARIANT MET-8
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Cited for: VARIANTS GASTRIC CANCER PHE-17; GLU-824; ALA-868; GLY-870 AND GLY-873;VARIANTS HNPCC1 CYS-98; TYR-323; ILE-335; ARG-629 AND VAL-714
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Cited for: CHARACTERIZATION OF VARIANTS ASP-322; LEU-622 AND TYR-639
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Cited for: VARIANTS HNPCC1 HIS-167; MET-393; PRO-524; ASN-596 DEL; LEU-622; SER-674 AND ARG-905;CHARACTERIZATION OF VARIANTS HNPCC1 HIS-167; MET-393; PRO-524; ASN-596 DEL; LEU-622; SER-674 AND ARG-905
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Cited for: INVOLVEMENT IN MULTIPLE CAFE-AU-LAIT SPOTS WITH LEUKEMIA
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Cited for: VARIANTS HNPCC1 MET-44; VAL-45; ASN-596 DEL; GLY-886 AND GLU-923
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Cited for: VARIANTS HNPCC1 ILE-102; ASP-163 AND ALA-564;VARIANT ASP-322
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Cited for: VARIANTS HNPCC1 LEU-92 DEL AND ALA-853;VARIANT ASP-322
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Cited for: VARIANTS COLORECTAL CANCER ILE-13 AND ILE-342;VARIANT ASP-322
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Cited for: VARIANTS CRC MET-8; SER-40; VAL-169; ARG-203; PHE-390; LYS-419; CYS-619 AND ARG-629
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Cited for: VARIANTS HNPCC1 LEU-440 DEL; TYR-506; ARG-629 AND ILE-688
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Cited for: VARIANTS HNPCC1 VAL-169; PHE-390; ALA-564 AND ARG-629;VARIANT CRC LYS-419
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Cited for: VARIANTS HNPCC1 THR-2; LEU-92 DEL; MET-145; PHE-390 AND ALA-853;VARIANT ASP-322
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Cited for: VARIANTS HNPCC1 PRO-33; ASP-161; ARG-162; ARG-164; PRO-173; PRO-187; TYR-333; ASN-603; PRO-636; PHE-697; 745-ILE-ILE-746 DEL AND LYS-749;VARIANTS VAL-272; THR-834 AND GLU-923;CHARACTERIZATION OF VARIANTS HNPCC1 PRO-33; ASP-161; ARG-162; ARG-164; PRO-173; PRO-187; TYR-333; ASN-603; PRO-636; PHE-697; 745-ILE-ILE-746 DEL AND LYS-749;CHARACTERIZATION OF VARIANTS VAL-272; THR-834 AND GLU-923
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Cited for: VARIANTS GLN-46; LYS-106; ASP-322; SER-596; LEU-670; ILE-779; SER-807; HIS-835 AND ARG-911
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Cited for: MUTAGENESIS OF GLY-674;CHARACTERIZATION OF VARIANTS HNPCC1 PRO-33; SER-127; ASP-161; ARG-162; ARG-164; PRO-173; PRO-187; TYR-333; ASN-603; PRO-636; PHE-697; 745-ILE-ILE-746 DEL; LYS-749; THR-834 AND GLU-923;CHARACTERIZATION OF VARIANTS VAL-272 AND ASP-322
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Cited for: VARIANTS HNPCC1 LEU-92 DEL AND ARG-199;VARIANTS VAL-272; ASP-331; GLU-470; ASN-596 DEL; ASN-610; GLY-638; GLU-645; TYR-671; LEU-696; ARG-697; PHE-723; TYR-748 AND GLN-839;CHARACTERIZATION OF VARIANTS HNPCC1 LEU-92 DEL AND ARG-199;CHARACTERIZATION OF VARIANTS VAL-272; ASP-331; GLU-470; ASN-596 DEL; ASN-610; GLY-638; GLU-645; TYR-671; LEU-696; ARG-697; PHE-723; TYR-748 AND GLN-839
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Cited for: CHARACTERIZATION OF VARIANTS HNPCC1 ARG-162; HIS-167 AND SER-359
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Cited for: CHARACTERIZATION OF VARIANTS HNPCC1 HIS-167; THR-305: LEU-622; ARG-639; ARG-674; PHE-697 AND THR-834
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Cited for: CHARACTERIZATION OF VARIANTS HNPCC1 MET-44; VAL-45; HIS-167; THR-305; PHE-390; ASN-596 DEL; ARG-639; ARG-674; PHE-697; PHE-723 AND GLY-886;CHARACTERIZATION OF VARIANTS ASP-165; HIS-177; VAL-272; LEU-385; LEU-519; ALA-675; GLU-759; VAL-805; GLY-843 AND LEU-860
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Cited for: CHARACTERIZATION OF VARIANTS SER-127; MET-145; GLN-205; ASP-322; PRO-328; ILE-367; GLU-487 AND ILE-909