Table 1. Sequenced Members of the Ffh/SRP54 Family

_______________________________________________________________________________________________________________________________________
Abbrevitation	Name of Description in Database				Organism			Size		Database and gi or Accession
													(# of residues)	Number
_______________________________________________________________________________________________________________________________________

1. Archaea
SRP54 Aam	Signal Recognition 54 KDA Protein (SRP54)		Acidianus ambivalens		451		gi|12230633  (sp|P70722)
         												(fragment)
Ffh Ape		Signal Recognition 54 kDA Protein			Aeropyrum pernix		441		gi|12230645  (sp|Q9YB62)
SRP54 Afu	Signal Recognition 54 KDA Protein (SRP54)		Archaeoglobus fulgidus		433		gi|11498230
SRP54 Hsp	Signal Recognition 54 KDA Protein			Halobacterium sp		460		gi|12230636  (sp|Q9HMN5)
SRP54 Mth	Signal Recognition 54 KDA Protein 			Methanothermobacter		442		gi|3334341  (sp|O27376)
									thermautotrophicus
SRP54 Mja	Signal Recognition 54 KDA Protein 			Methanococcus jannaschii	451		gi|2500886  (sp|Q57565)
SRP54 Pab	Signal Recognition Particle Protein Subunit SRP54 	Pyrococcus abyssi		443		gi|14520695
SRP54 Pho	Signal Recognition Particle 				Pyrococcus horikoshii		443		gi|12230630  (sp|O59307)
SRP54 Sac	Signal Recognition 54 KDA Protein (SRP54)		Sulfolobus acidocaldarius	446 		gi|12230625  (sp|O07853)
 				         								(fragment)
SRP54 Sso	Signal Recognition Particle Protein Subunit SRP54 	Sulfolobus solfataricus		447		gi|13814155
SRP54 Tac	Signal Recognition Particle Protein Subunit SRP54 	Thermoplasma acidophilum	456		gi|12230635  (sp|Q9HKT0)
SRP54 Tvo	Probable Signal Recognition Particle GTPase 		Thermoplasma volcanium		455		gi|13541823

2. Eukaryotes
SRP54 Ath2	Signal Recognition 54 KDA Protein (SRP54)		Arabidopsis thaliana		495		gi|1711510  (sp|P49966)
SRP54 Ani	Signal Recognition 54 KDA Protein Homolog 		Aspergillus niger		534		gi|3334345  (sp|Q00179)
SRP54 Cel	Hypothetical Protein 					Caenorhabditis elegans		496		gi|7499565
SRP54 Cal	Signal Recognition 54 KDA Protein Homolog 		Candida albicans		556		gi|3334344  (sp|O42816)
SPP54 Cfa	SRP protein 54kD					Canis familiaris		504		gi|226429
SRP54 Dme	SRP54 KDA Gene Product					Drosophila melanogaster		508		gi|7295492
SRP54 Ehi	Signal Recognition 54 KDA Protein  (SRP54)		Entamoeba histolytica		487		gi|3334340  (sp|O15821)
SRP54 Has	Signal Recognition 54 KDA Protein Homolog 		Homo sapiens			504		gi|4507215
SRP54 Hvu	Signal Recognition 54 KDA Protein 			Hordeum vulgare			497		gi|1711511  (sp|P49969)
SRP54 Les	Signal Recognition 54 KDA Protein  			Lycopersicon esculentum		499		gi|1711512  (sp|P49972)
SRP54 Mmu	Signal Recognition 54 KDA Protein  			Mus musculus			504		gi|226430
SRP54 Sce	Signal Recognition 54 KDA Protein 			Saccharomyces cerevisiae	541		gi|6325345
SRP54 Spo	Signal Recognition 54 KDA Protein Homolog 		Schizosaccharomyces pombe	522		gi|134887  (sp|P21565)
SRP54 Yli	Signal Recognition 54 KDA Protein (SRP54)		Yarrowia lipolytica		536		gi|2500887  (sp|Q99150)

4. Mycoplasma
Ffh Mge		Probable Signal Recognition Particle Protein (Ffh)	Mycoplasma genitalium		446		gi|12044898
SRP54 Mmy	Signal Recognition Particle Protein 			Mycoplasma mycoides		447		gi|401118  (sp|Q01442)
Ffh Mpn		Signal Recognition Particle				Mycoplasma pneumoniae		450		gi|13507800
SRP54 Mpu	Signal Sequence Binding Protein				Mycoplasma pulmonis		449		gi|14089756
Ffh Uur		Signal Recognition Particle 				Ureaplasma urealyticum		448		gi|13357648

5. Low G+C Gram + Bacteria
Ffh Bha		Signal Recognition Particle 				Bacillus halodurans		451		gi|10175104
SRP54 Bsu	Signal Recognition Particle Protein 			Bacillus subtilis		446		gi|586037  (sp|P37105)
Ffh Lla		Signal Recognition Particle Protein 			Lactococcus lactis 		518		gi|12724623
Ffh Sau		Signal Recognition Particle Homolog 			Staphylococcus aureus 		455		gi|13701037
SRP54 Smu	Signal Recognition Particle Protein 			Streptococcus mutans		516		gi|2500883  (sp|Q54431)
Ffh Spy		Putative Signal Recognition Particle 			Streptococcus pyogenes 		519		gi|13622328

6. High G+C Gram + Bacteria
SRP54 Mtu	Signal Recognition Particle Protein 			Mycobacterium tuberculosis	525		gi|1711515  (sp|Q10963)
SRP54 Mle	Signal Recognition Particle Protein			Mycobacterium leprae		521		gi|3334343  (sp|O33013)
Ffh Sco		Signal Recognition Particle Protein 			Streptomyces coelicolor		550		gi|7481767
Ffh Sli		Signal Recognition Particle Protein 			Streptomyces lividans		550		gi|3265154

7. Chlamydia
SRP54 Cmu	Signal Recognition Particle				Chlamydia muridarum 		448		gi|11275269
Ffh Ctr	Probable Signal Recognition Particle GTPase 			Chlamydia trachomatis 		448		gi|7440086
SRP54 Cpn	Signal Recognition Particle CP0658 			Chlamydophila pneumoniae 	448		gi|11275268

8. Primitive Bacteria
SRP54 Aae	Signal Recognition Particle Protein 			Aquifex aeolicus		454		gi|6226155  (sp|O67615)
SRP54 Dra	Putative Signal Recognition Particle 			Deinococcus radiodurans 	452		gi|7473915
SRP54 Tma	Signal Recognition Particle Protein 			Thermotoga maritima  		433		gi|7440083
SRP54 Taq	Signal Recognition Particle Protein 			Thermus aquaticus		430		gi|3024639  (sp|O07347)

9. Spirochetes
Ffh Bbu		Signal Recognition Particle Protein Ffh			Borrelia burgdorferi		447		gi|7440078
Ffh Tpa		Signal Recognition Particle Protein (Ffh)		Treponema pallidum		452		gi|3322699

10. Gram ­ Proteobacteria
SRP54 Afe	Signal Recognition Particle Protein-Like Protein	Acidithiobacillus ferrooxidans	458		gi|7769071
SRP54 Bap	Signal Recognition Particle 				Buchnera aphidicola		451		gi|11387174  (sp|P57473)
SRP54 Cje	Signal Recognition Particle Protein 			Campylobacter jejuni		445		gi|11275270
SRP54 Ccr	Signal Sequence Binding Protein				Caulobacter crescentus		508		gi|13425409
SRP54 Eco	Signal Recognition Particle Protein 			Escherichia coli		453		gi|134885  (sp|P07019)
SRP54 Hin	Signal Recognition Particle Protein 			Haemophilus influenzae		462		gi|1174434  (sp|P44518)
SRP54 Hpy	Signal Recognition Particle Protein 			Helicobacter pylori		448		gi|2500881  (sp|P56005)
SRP54 Lma	Propaple Signal Recognition Particle 54KDA		Leishmania major		263		gi|9756709
         (fragment)	
SRP54 Mlo	Signal Recognition Particle Protein 			Mesorhizobium loti		532		gi|13473694
Ffh Nme		Signal Recognition Particle Protein 			Neisseria meningitidis 		456		gi|11275266
Ffh Pmu		Ffh							Pasteurella multocida		458		gi|12721534
Ffh Pae		Signal	Recognition Particle Protein Ffh		Pseudomonas aeruginosa 		457		gi|11352577
SRP54 Rno	Signal Recognition Particle 				Rattus norvegicus		70		gi|984323
											          (fragment)
SRP54 Rpr	Signal Recognition Particle Protein 			Rickettsia prowazekii		449		gi|6226156  (sp|Q9ZDZ0)
SRP54 Vch	Signal Recognition Particle Protein 			Vibrio cholerae 		461		gi|11275263
SRP54 Xfa	Signal Recognition Particle Protein		 	Xylella fastidiosa 		434		gi|11275265

11. Cyanobacteria, Chloroplasts
SRP54 Ath1	Signal Recognition Particle 				Arabidopsis thaliana		488		gi|586038  (sp|P37107)
SRP54 Cre	Chloroplast SRP54 Precursor 				Chlamydomonas reinhardtii	549		gi|13123461
SRP54 Psa	Signal Recognition Particle 54 kDa 			Pisum sativum			488		gi|3746903
SRP54 Syn2	Signal Sequence Binding Protein				Synechococcus PCC7942		485		gi|2500884  (sp|Q55311)
SRP54 Syn1	Signal Recognition Particle Protein 			Synechocystis sp. PCC 6803	482		gi|2500885  (sp|P74214)