| Genetic locus | ||||
|---|---|---|---|---|
| 26695 | J99 | Gene | Mra (kDa) | Remarks |
| JHP1296 | mod-1 | 71.6 | ||
| JHP1297 | res-1 | 91.4 | ||
| HP1522 | JHP1411 | mod-2 | 73.1/72.9b | ORF contains frameshift in both strains; expression may be regulated by slipped-strand repair |
| HP1521 | JHP1410 | res-2 | 111.5/111.6 | 85% protein identity |
| HP0593 | mod-3 | 68.4 | ||
| HPO592 | res-3 | 114.8 | ||
| HP1369/1370 | mod-4a/4b | 93.9c | ORFs 1369 and 1370 probably comprise a single M gene; expression may be regulated by slipped- strand repair | |
| HP1371 | res-4 | 113.7 | ||
Predicted molecular mass of putative proteins expressed in strains 26695 and J99. Mr values for respective strains are separated by a slash.
Due to translational frameshift mutations, expression of these proteins is unlikely. Predicted protein molecular mass values are based on the presumed slipped-strand repair of the frameshift mutation in each strain.
Nucleotide sequence suggests that ORF encoded by mod-4 prematurely terminates downstream of homopolymeric G tract (residues 1402 to 1411). Predicted protein molecular mass is based on the presumed slipped-strand repair of the frameshift mutation.
From: Chapter 24, Restriction and Modification Systems
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