RPSBLAST alignment for GI: 254780263 and conserved domain: TIGR00503

>gnl|CDD|129594 TIGR00503, prfC, peptide chain release factor 3. This translation releasing factor, RF-3 (prfC) was originally described as stop codon-independent, in contrast to peptide chain release factor 1 (RF-1, prfA) and RF-2 (prfB). RF-1 and RF-2 are closely related to each other, while RF-3 is similar to elongation factors EF-Tu and EF-G; RF-1 is active at UAA and UAG and RF-2 is active at UAA and UGA. More recently, RF-3 was shown to be active primarily at UGA stop codons in E. coli. All bacteria and organelles have RF-1. The Mycoplasmas and organelles, which translate UGA as Trp rather than as a stop codon, lack RF-2. RF-3, in contrast, seems to be rare among bacteria and is found so far only in Escherichia coli and some other gamma subdivision Proteobacteria, in Synechocystis PCC6803, and in Staphylococcus aureus. Length = 527
 Score = 57.6 bits (139), Expect = 6e-09
 Identities = 46/161 (28%), Positives = 73/161 (45%), Gaps = 19/161 (11%)

Query: 18  IGHVDHGKTTLTAAITKYYSEEKKEYGDI-----------DSAPEEKLRGITIATAHVSY 66
           I H D GKTT+T  +   Y    +  G +           D    EK RGI+I T+ + +
Sbjct: 17  ISHPDAGKTTITEKVL-LYGGAIQTAGAVKGRGSQRHAKSDWMEMEKQRGISITTSVMQF 75

Query: 67  ETDKRFYSHIDCPGHADYVKNMITGATQADGAILVCAAEDGPKPQTREHILLARQIGISS 126
                  + +D PGH D+ ++     T  D  ++V  A  G + +TR+ + + R +  + 
Sbjct: 76  PYRDCLVNLLDTPGHEDFSEDTYRTLTAVDNCLMVIDAAKGVETRTRKLMEVTR-LRDTP 134

Query: 127 IVVYMNKVD--AVDDDELLDISEYEIRDLLKEHKYSDDTPI 165
           I  +MNK+D    D  ELLD    E+ + LK +      PI
Sbjct: 135 IFTFMNKLDRDIRDPLELLD----EVENELKINCAPITWPI 171