MG_190 – phosphoesterase
Name | ||
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WID | MG_190 |
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Name | phosphoesterase |
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Symbol | mgpA | |
Synonyms | recJ | |
Protein product | MG_190_MONOMER | |
Cross references | GenBank: AAC71409.1, CMR: MG_190, BioCyc: MG_190, SwissProt: P22746 | |
Homologs | ||
Classification | ||
Type | mRNA |
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Structure | ||
Structure |
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Sequence | Chromosome: Mgenitalium_Chr_1, Coordinate: 220607 (nt), Length: 957 (nt), Direction: Forward, G/C content: 33.5%, Sequence: 1 51 101 151 201 251 301 351 401 451 501 551 601 651 701 751 801 851 901 951 ATGAAAAAAGGATCAATAACTGAAGCAATTAATGCCATTAAACAATTTGA TAAGATTGTTATCTTTCACCATGTGCGCCCTGATGGGGATTGTTTAGGAG CACAACAAGGCTTGTTTCACCTCATTAAAGCTAACTTTAAAAATAAGGAG GTGAAGTGTGTTGGTAATAACAACAACCTGTTTAGCTTTATCAACATGAC ATTTACCAACCAAATTGATGAGAGCTTTTTAAAAGAAGCACTTGCCATTG TGGTCGATGCTAATTACAAAAACAGGATTGAATTGAGAGAACTGTTAGAT AAAAACCTGTTTAAAGCAGTGTTAAGGATTGATCACCATCCCAATGAAGA TGATCTAAACACTAGCTTTAACTTTGTTGAAGAAAGCTATGTAGCTTGTT GTGAGCAGATAGTGGAGATGGCCACAGTGGCGAAGTGGACCATACCACCA GTGGCTGCTACTTTACTATATATAGGTATCTATACGGATAGTAATAGATT TCTATATAGTAATACATCATATAGAACACTATACTTAGCAGCAATACTAT ATAAAGCTAAAGCTGATATAAGGATAGTACATGATCATTTAAACCATACT AGTTTAGCAGATCTTAAGTTTAAAAAGTATGTTTATAACCACTTTAAAAC CCAAGGACAAGTGATCTATTTTATCTGTACTAAAAAGATCCAAAAGAGAC TAAGAATGACTGCAGATCAATGTGCTAGAGTTAACTTGTTAAGTAACATA GCAGATTACAAGATCTGACTTTTCTTTATTGAACAAGCTAATAATGAGAT CAGGATAGAACTGAGGAGTAATGGGATTAATGTCAGAGATATAGCCATTA AGTATGGTGGGGGAGGACATAATAATGCAAGTGGAGCGATCATTACTAAC AAAAAACAAATTAGTGATGTTGTTAGTGATTGTGTGAAAAAAATTGTTTA TAATTAA 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 957 |
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Transcription unit | TU_117 |
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Empirical formula (pH 7.5) | H10247C9289N3942O6626P957 | |
Molecular weight (pH 7.5; Da) | 312763.71 |
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Functional genomics | ||
Is essential | Yes (Show evidence) |
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Relative expression | 1.29325 (dimensionless) (Show evidence) |
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Half life | 4.425 (min) (Show evidence) |
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Extinction coefficient (260 nm, 25C, pH 7.0) |
9997300 | |
pI | 3.83 | |
Comments | ||
Comments | Introduction MG_190 codes for DHH phosphoesterase family protein with weak homology to 5-3' ssDNA exonuclease recJ [PUB_0110]. Carvalho et al concluded in 2005 that there is no recJ in M. genitalium [PUB_0072]. recJ Processive exonuclease, degrading ~1000 nt after a single binding event [PUB_0148]. DNA binding and nuclease activity of RecJ was specifically enhanced by the pre-addition of ssDNA-binding protein [PUB_0148]. Needs at least 7 ss nucleotides to bind [PUB_0148]. Exonuclease activity can be terminated by ds region [PUB_0148]. Releases mononucleotides [PUB_0148]. Possibly has exonuclease activity required to produce a free 3' single-stranded DNA to which RecA can bind for the initiation of homologous recombination [PUB_0147]. Exonuclease activity requires Mg2+, Mn2+, or Co2+ [PUB_0552]. Yamagata et al observed the exonuclease kinetics for the complete protein: kcat=2×10-3 1/s, Km=4.1 μM, and for a truncated protein: kcat>130 1/s, Km=6.1 μM [PUB_0552]. | |
References |
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Metadata | ||
Created | 2012-10-01 15:07:18 | |
Last updated | 2012-10-01 15:13:06 |