Reviewed, UniProtKB/Swiss-Prot Q9UZK7 (IF2P_PYRAB)

Names and origin

Protein names

Recommended name:
    Probable translation initiation factor IF-2
Cleaved into the following chain:
    1- Recommended name:
            Pab infB intein
        Alternative name(s):
            Pab IF2 intein

Gene names

Name:	infB
Ordered Locus Names:	PYRAB11390
ORF Names:	PAB0755

Organism

Pyrococcus abyssi [Complete proteome] [HAMAP]

Taxonomic identifier

29292 [NCBI]

Taxonomic lineage

Archaea › Euryarchaeota › Thermococci › Thermococcales › Thermococcaceae › Pyrococcus

Protein attributes

Sequence length	992 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Function in general translation initiation by promoting the binding of the formylmethionine-tRNA to ribosomes. Seems to function along with eIF-2 By similarity.
Post-translational modification	This protein undergoes a protein self splicing that involves a post-translational excision of the intervening region (intein) followed by peptide ligation Potential.
Miscellaneous	The intein interrupts the GTP-binding site. HAMAP MF_00100
Sequence similarities	Belongs to the IF-2 family. Contains 1 DOD-type homing endonuclease domain.

Ontologies

Keywords
Biological process	Intron homing Protein biosynthesis
Ligand	GTP-binding Nucleotide-binding
Molecular function	Endonuclease Hydrolase Initiation factor Nuclease
PTM	Autocatalytic cleavage Protein splicing
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	intein-mediated protein splicing Inferred from electronic annotation. Source: InterPro intron homing Inferred from electronic annotation. Source: UniProtKB-KW translational initiation Inferred from electronic annotation. Source: HAMAP
Cellular component	intracellular Inferred from electronic annotation. Source: InterPro
Molecular function	GTP binding Inferred from electronic annotation. Source: UniProtKB-KW GTPase activity Inferred from electronic annotation. Source: HAMAP endonuclease activity Inferred from electronic annotation. Source: UniProtKB-KW translation initiation factor activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 20	20	Probable translation initiation factor IF-2, 1st part Potential		PRO_0000014487
	Chain	21 – 414	394	Pab infB intein Potential		PRO_0000014488
	Chain	415 – 992	578	Probable translation initiation factor IF-2, 2nd part Potential		PRO_0000014489
Regions
	Domain	96 – 220	125	DOD-type homing endonuclease
	Nucleotide binding	472 – 476	5	GTP By similarity
	Nucleotide binding	526 – 529	4	GTP By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q9UZK7-1 [UniParc]. Last modified May 1, 2000. Version 1. Checksum: 9838BADA50E6F1C6	FASTA	992	112,225
	10 20 30 40 50 60 MTKRIRQPII AVLGHVDHGK CLLPDEKVVV PSVGFVTLKE LFETASKVVE RDDEKEIREL 70 80 90 100 110 120 DERITSVNGD GKTGLVKASY VWKVRHKGKV IRVKLKNWHG VTVTPEHPFL TTKGWKRADQ 130 140 150 160 170 180 LRPGDYVAVP RFIHGNEDEK IFLSYVKVKK SGEEWKEYFY LAGRKGNIDV NLLFVAPKRY 190 200 210 220 230 240 VVEFLRGYFE ERSEVKGESV IVEARELVEP LSLALLRFGI FSKIQGSKLI VTGKRNLEAF 250 260 270 280 290 300 KDYIGFKDER EKALEEAIEK VKGSEVYPIF EEIRRLRLLF GFTREELGSY AKYENSEAPT 310 320 330 340 350 360 YEELMEILDF IERGSPSLSK KIAILEGKLK AELRVLEEEG LIKDGKLTPL GRELLEVWRN 370 380 390 400 410 420 REFDSKDVDY IRNIAETLVF IPVENVEEEE YDGYVYDLTT ETHNFIANGI LVHNTTLLDR 430 440 450 460 470 480 IRKTNVAAKE AGGITQHIGA TEVPIEVVKK IAGPLIKLWK AEIKLPGLLF IDTPGHEAFT 490 500 510 520 530 540 SLRARGGSLA DLAVLVVDIN EGFQPQTIES IEILRKYRTP FVVAANKIDR IKGWVIEEDE 550 560 570 580 590 600 PFLMNIKKQD QRAVQELETK LWELIGKFYE FGFQANRFDR VQNFTRELAI VPISAKYGIG 610 620 630 640 650 660 IAELLVLIAG LSQRYLEEKL KIEVEGPARG TILEVREEPG LGHTIDVIIY DGTLHKDDTI 670 680 690 700 710 720 VVGGKDKAIV TKIRALLKPK PLDEIRDPRF RFDYVDEVTA AAGVKIAAPG LEEALAGSPV 730 740 750 760 770 780 IAAPTPEDVE KAKQEILEQI ERVVISTDKV GVIVKADTLG SLEALSKELQ EKEIPIRKAD 790 800 810 820 830 840 VGNVSKTDVM EALSVKEEEP KYGVILGFNV KVNEDAEEVA KAKDVKIFVG NVIYKLIEDY 850 860 870 880 890 900 EEWVKEEEEK KKRELLSKVT FPGVIRLYPD ERYVFRRSNP AIVGIEVIEG RIKPGVTLIK 910 920 930 940 950 960 QNGQKVGVIR SIKSRDEFLQ EAKKGQAVAI AIEGAIVGRH IHPGETLYVD LSRDDAITLL 970 980 990 KHLRDTLEDT DIKALKMIAK VKAKEDPFWR AI

References

[1]

"An integrated analysis of the genome of the hyperthermophilic archaeon Pyrococcus abyssi." Cohen G.N., Barbe V., Flament D., Galperin M., Heilig R., Lecompte O., Poch O., Prieur D., Querellou J., Ripp R., Thierry J.-C., Van der Oost J., Weissenbach J., Zivanovic Y., Forterre P. Mol. Microbiol. 47:1495-1512(2003) [PubMed: 12622808] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: GE5 / Orsay.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AJ248286 Genomic DNA. Translation: CAB50050.1.
PIR	E75093.
RefSeq	NP_126820.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	1496500.
GenomeReviews	Gene locus PYRAB11390 in contig AL096836_GR.
KEGG	pab:PAB0755.
NMPDR	fig|272844.1.peg.1193.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q9UZK7.
OMA	TPEHPFL
Enzyme and pathway databases
BioCyc	PABY272844:PAB0755-MON.
Family and domain databases
HAMAP	MF_00100. [Tree]
InterPro	IPR015760. aIF-2. IPR003586. Hedgehog_hint_C. IPR003587. Hedgehog_hint_N. IPR004042. Intein_endonuc. IPR006141. Intein_splicing_site. IPR000795. ProtSyn_GTP_bd. IPR005225. Small_GTP_bd. IPR004544. TIF_aIF-2. IPR004161. Transl_elong_EFTu/EF1A_2. IPR009000. Transl_elong_init/rib_B-barrel. [Graphical view]
PANTHER	PTHR23115:SF41. aIF-2. 1 hit.
Pfam	PF00009. GTP_EFTU. 1 hit. PF03144. GTP_EFTU_D2. 1 hit. [Graphical view]
SMART	SM00305. HintC. 1 hit. SM00306. HintN. 1 hit. [Graphical view]
TIGRFAMs	TIGR00491. aIF-2. 1 hit. TIGR01443. intein_Cterm. 1 hit. TIGR01445. intein_Nterm. 1 hit. TIGR00231. small_GTP. 1 hit.
PROSITE	PS01176. IF2. False negative. PS50818. INTEIN_C_TER. 1 hit. PS50819. INTEIN_ENDONUCLEASE. 1 hit. PS50817. INTEIN_N_TER. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

IF2P_PYRAB

Accession

Primary (citable) accession number: Q9UZK7

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 27, 2001
Last sequence update:	May 1, 2000
Last modified:	November 24, 2009
This is version 65 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)