Reviewed, UniProtKB/Swiss-Prot Q55242 (SACB_STRSL)

Names and origin

Protein names

Recommended name:
    Levansucrase
    EC=2.4.1.10
Alternative name(s):
    Beta-D-fructofuranosyl transferase
    Sucrose 6-fructosyl transferase

Gene names

Name:

ftf

Organism

Streptococcus salivarius

Taxonomic identifier

1304 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Lactobacillales › Streptococcaceae › Streptococcus

Protein attributes

Sequence length	969 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	Sucrose + (6)-beta-D-fructofuranosyl-(2->)(n) alpha-D-glucopyranoside = glucose + (6)-beta-D-fructofuranosyl-(2->)(n+1) alpha-D-glucopyranoside.
Subcellular location	Secreted › cell wall.
Sequence similarities	Belongs to the glycosyl hydrolase 68 family.

Ontologies

Keywords
Cellular component	Cell wall Secreted
Domain	Signal
Molecular function	Glycosyltransferase Transferase
Gene Ontology (GO)
Biological process	sugar utilization Inferred from electronic annotation. Source: InterPro
Cellular component	cell wall Inferred from electronic annotation. Source: UniProtKB-KW extracellular region Inferred from electronic annotation. Source: UniProtKB-KW membrane Inferred from electronic annotation. Source: InterPro
Molecular function	levansucrase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – ?		Potential
	Chain	? – 969		Levansucrase		PRO_0000012251

Sequences

	Sequence		Length	Mass (Da)
	Q55242-1 [UniParc]. Last modified November 1, 1996. Version 1. Checksum: D389B5B32ACF735A	FASTA	969	103,984
	10 20 30 40 50 60 MDITVNSQSN TVAPKQAECK KMRYSIRKVA TVGATSALVG TLAFLGATQV KADQVTETAP 70 80 90 100 110 120 AVATATATPE TSTASLTVAS ETATSVATSE AVESSVAHSE VATKPVTETQ PSNTTPSVVE 130 140 150 160 170 180 EKASSTVVTS SSDATTPSAT VAAVSAPAHT SEAAVEAPTS TASSEAADTH TEVDLKVSEN 190 200 210 220 230 240 SAANANLSKL NGRIKSIVEE NMTSDQIVAL TEEEIKALNK VDFSDDAIKG TGTSLTYRNL 250 260 270 280 290 300 KDIVASFLKQ DSKLAVPYFK ADTIINMPAF NTVDAQTMKK EEIDVWDSWP VQDAKSGVVS 310 320 330 340 350 360 NWNGYQLVIS MAGAPNKNSN HIYLLYRKYG DNDFTHWKNA GPIFGYNALE DDQQWSGSAT 370 380 390 400 410 420 VNSDGSIQLY YTKNDTSGGK LNWQQLASAT LNLAVENDEV VIKSVENDHI LFGGDNYHYQ 430 440 450 460 470 480 SYPKFMSTFD DDHNHDGNPD RTDNYCLRDP HIIEDNGSRY LIFESNTGDE NYQGEKQIYK 490 500 510 520 530 540 WSNYGGDDAF NLKSFLNIVN NKHLYNLASW ANGSIGILKL DDNEKNPSVA ELYTPLVTSH 550 560 570 580 590 600 MVTDEVERPS VVKMGGKYYL FTASRINKST DAEGTVAARE AVGDDVVMLG FVSDSLRGKY 610 620 630 640 650 660 RPLNGSGVVL TASVPADWRT STYSYYAVPV EGSSDTLLVT SYMTNRGGIA GAENKSTWAP 670 680 690 700 710 720 SFLIKMNADD TTEVLPKMTN QGDWIWDKSS ESLVHVGDQN SAKLPNEDFN VDYYAVSGYG 730 740 750 760 770 780 LKPHTYPTVD GSTGVSEAHG VLTVTVKDGK DKKADKPETP VSPTEGNHSV DDKTNKPGTS 790 800 810 820 830 840 KPADNNQPSA DKEDKPTNPT NPDSPARTPF PYYGDHSNDN NSSNDHHVAV PVKPSTGDSV 850 860 870 880 890 900 GDRRPVAQAA EIATPVPKTI VATGPTVPTN TVKEESVTET EAPKPVKSEE KVQSHGVDKA 910 920 930 940 950 960 NEVTKSDESS KGNNTKVAAK LATTPKTPSD SEGSNSNILS ILATIFAAIA SLALLGYGLV TGKIHLPKK

References

[1]

"The cell-bound fructosyltransferase of Streptococcus salivarius: the carboxyl terminus specifies attachment in a Streptococcus gordonii model system." Rathsam C., Giffard P.M., Jacques N.A. J. Bacteriol. 175:4520-4527(1993) [PubMed: 8331080] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. Strain: ATCC 25975.

Cross-references

Sequence databases
EMBLGenBankDDBJ	L08445 Genomic DNA. Translation: AAA71925.1.
3D structure databases
ModBase	Search...
Family and domain databases
InterPro	IPR003469. Glyco_hydro_68. IPR005877. Gpos_YSIRK. [Graphical view]
Pfam	PF02435. Glyco_hydro_68. 1 hit. PF04650. YSIRK_signal. 1 hit. [Graphical view]
TIGRFAMs	TIGR01168. YSIRK_signal. 1 hit.
ProtoNet	Search...

Entry information

Entry name

SACB_STRSL

Accession

Primary (citable) accession number: Q55242

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 1998
Last sequence update:	November 1, 1996
Last modified:	November 25, 2008
This is version 39 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)