P54307 (TERS_BPSPP) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Terminase small subunit

Alternative name(s):
G1P

Gene names

Name:

1

Organism

Bacillus phage SPP1 (Bacteriophage SPP1) [Complete proteome]

Taxonomic identifier

10724 [NCBI]

Taxonomic lineage

Viruses › dsDNA viruses, no RNA stage › Caudovirales › Siphoviridae › Lambdalikevirus › unclassified Lambda-like viruses

Virus host

Bacillus subtilis [TaxID: 1423]

Protein attributes

Sequence length	184 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level

General annotation (Comments)

Function	Essential for DNA maturation and packaging.
Subunit structure	Dimer of a small and a large subunit Potential.
Sequence similarities	To B.subtilis xtmA and yqaS.

Ontologies

Keywords
Biological process	Viral genome packaging
Coding sequence diversity	Alternative initiation
Technical term	Complete proteome Direct protein sequencing
Gene Ontology (GO)
Biological_process	DNA packaging Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Alternative products

This entry describes 2 isoforms produced by alternative initiation. [Align] [Select]

Isoform G1P (identifier: P54307-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

Isoform G1P* (identifier: P54307-2)

The sequence of this isoform differs from the canonical sequence as follows:
     1-63: Missing.

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed; by host Ref.2
	Chain	2 – 184	183	Terminase small subunit		PRO_0000003378
Natural variations
	Alternative sequence	1 – 63	63	Missing in isoform G1P*.		VSP_018686

Sequences

	Sequence		Length	Mass (Da)
	Isoform G1P [UniParc]. Last modified January 23, 2007. Version 3. Checksum: 24EDDD1681085B39	FASTA	184	20,755
	10 20 30 40 50 60 MGEVKGKWTP KLERFVDEYF INGMNATKAA IAAGYSKKSA STIAAENMQK PHVRARIEER 70 80 90 100 110 120 LAQMDKKRIM QAEEVLEHLT RIALGQEKEQ VLMGIGKGAE TKTHVEVSAK DRIKALELLG 130 140 150 160 170 180 KLTQCLRTSR RSRLTKSSSL TIAAMQNEES KAFREVYTAF LRGVENGQSR STPQICIEGR PWFR
	Isoform G1P* [UniParc]. Checksum: 44C15EA06624E964	FASTA	121	13,733
	10 20 30 40 50 60 MDKKRIMQAE EVLEHLTRIA LGQEKEQVLM GIGKGAETKT HVEVSAKDRI KALELLGKLT 70 80 90 100 110 120 QCLRTSRRSR LTKSSSLTIA AMQNEESKAF REVYTAFLRG VENGQSRSTP QICIEGRPWF R

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Molecular analysis of the Bacillus subtilis bacteriophage SPP1 region encompassing genes 1 to 6. The products of gene 1 and gene 2 are required for pac cleavage." Chai S., Bravo A., Lueder G., Nedlin A., Trautner T.A., Alonso J.C. J. Mol. Biol. 224:87-102(1992) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Analysis of the Bacillus subtilis bacteriophages SPP1 and SF6 gene 1 product: a protein involved in the initiation of headful packaging." Chai S., Kruft V., Alonso J.C. Virology 202:930-939(1994) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA], PROTEIN SEQUENCE OF 2-26 AND 64-91.
[3]	"The complete nucleotide sequence and functional organization of Bacillus subtilis bacteriophage SPP1." Alonso J.C., Luder G., Stiege A.C., Chai S., Weise F., Trautner T.A. Gene 204:201-212(1997) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	X56064 Genomic DNA. Translation: CAA39536.1. X97918 Genomic DNA. Translation: CAA66571.1.
PIR	S24450.
RefSeq	NP_690652.1. NC_004166.2.
3D structure databases
ProteinModelPortal	P54307.
SMR	P54307. Positions 7-61.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	955251.
Family and domain databases
InterPro	IPR005335. Terminase_ssu. [Graphical view]
Pfam	PF03592. Terminase_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

TERS_BPSPP

Accession

Primary (citable) accession number: P54307

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 1, 1996
Last sequence update:	January 23, 2007
Last modified:	May 1, 2013
This is version 59 of the entry and version 3 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Viral Protein Annotation Program