Q43654 (SSY1_WHEAT) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Starch synthase 1, chloroplastic/amyloplastic
EC=2.4.1.21

Alternative name(s):
Starch synthase I-2
Short name=SS I
Short name=SS I-2

Gene names

Name:

WSSI-2

Organism

Triticum aestivum (Wheat)

Taxonomic identifier

4565 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › Liliopsida › commelinids › Poales › Poaceae › BEP clade › Pooideae › Triticeae › Triticum

Protein attributes

Sequence length	647 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at transcript level

General annotation (Comments)

Catalytic activity	ADP-glucose + (1,4-alpha-D-glucosyl)(n) = ADP + (1,4-alpha-D-glucosyl)(n+1).
Pathway	Glycan biosynthesis; starch biosynthesis.
Subcellular location	Plastid › chloroplast By similarity. Plastid › amyloplast By similarity. Note: Amyloplast or chloroplast, soluble By similarity.
Sequence similarities	Belongs to the glycosyltransferase 1 family. Bacterial/plant glycogen synthase subfamily.
Sequence caution	The sequence AAB02197.1 differs from that shown. Reason: Frameshift at position 629.

Ontologies

Keywords
Biological process	Starch biosynthesis
Cellular component	Amyloplast Chloroplast Plastid
Domain	Transit peptide
Molecular function	Glycosyltransferase Transferase
Gene Ontology (GO)
Biological_process	starch biosynthetic process Inferred from electronic annotation. Source: UniProtKB-UniPathway
Cellular_component	amyloplast Inferred from electronic annotation. Source: UniProtKB-SubCell chloroplast Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	starch synthase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Transit peptide	1 – 41	41	Chloroplast Potential
	Chain	42 – 647	606	Starch synthase 1, chloroplastic/amyloplastic		PRO_0000011143
Sites
	Binding site	153	1	ADP-glucose By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q43654 [UniParc]. Last modified February 16, 2004. Version 2. Checksum: D3374D7C3497DF6F	FASTA	647	71,005
	10 20 30 40 50 60 MAATGVGAGC LAPSVRLRAD PATAARASAC VVRARLRRVA RGRYVAELSR EGPAARPAQQ 70 80 90 100 110 120 QQLAPPLVPG FLAPPPPAPA QSPAPTQPPL PDAGVGELAP DLLLEGIAED SIDSIIVAAS 130 140 150 160 170 180 EQDSEIMDAK DQPQAKVTRS IVFVTGEAAP YAKSGGLGDV CGSLPIALAA RGHRVMVVMP 190 200 210 220 230 240 RYLNGSSDKN YAKALYTAKH IKIPCFGGSH EVTFFHEYRD NVDWVFVDHP SYHRPGSLYG 250 260 270 280 290 300 DNFGAFGDNQ FRYTLLCYAA CEAPLILELG GYIYGQNCMF VVNDWHASLV PVLLAAKYRP 310 320 330 340 350 360 YGVYRDSRST LVIHNLAHQG VEPASTYPDL GLPPEWYGAL EWVFPEWARR HALDKGEAVN 370 380 390 400 410 420 FLKGAVVTAD RIVTVSQGYS WEVTTAEGGQ GLNELLSSRK SVLNGIVNGI DINDWNPTTD 430 440 450 460 470 480 KCLPHHYSVD DLSGKAKCKA ELQKELGLPV REDVPLIGFI GRLDYQKGID LIKMAIPELM 490 500 510 520 530 540 REDVQFVMLG SGDPIFEGWM RSTESSYKDK FRGWVGFSVP VSHRITAGCD ILLMPSRFEP 550 560 570 580 590 600 CGLNQLYAMQ YGTVPVVHGT GGLRDTVETF NPFGAKGEEG TGWAFSPLTV DKMLWALRTA 610 620 630 640 MSTFREHKPS WEGLMKRGMT KDHTWDHAAE QYEQIFEWAF VDQPYVM

References

[1]	"Isolation, characterization and expression analysis of starch synthase I from wheat (Triticum aestivum L.)." Peng M., Hucl P., Chibbar R.N. Submitted (JUL-2000) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Strain: cv. Fielder. Tissue: Immature kernel.
[2]	Block M., Loerz H., Luetticke S. Submitted (FEB-1996) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 147-647. Strain: cv. Florida. Tissue: Endosperm.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AJ292522 mRNA. Translation: CAB99210.1. U48227 mRNA. Translation: AAB02197.1. Frameshift.
PIR	T06280.
3D structure databases
ProteinModelPortal	Q43654.
ModBase	Search...
Protein family/group databases
CAZy	GT5. Glycosyltransferase Family 5.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Organism-specific databases
Gramene	Q43654.
Enzyme and pathway databases
UniPathway	UPA00152.
Family and domain databases
InterPro	IPR001296. Glyco_trans_1. IPR011835. Glycogen/starch_synth. IPR013534. Starch_synth_cat_dom. [Graphical view]
Pfam	PF08323. Glyco_transf_5. 1 hit. PF00534. Glycos_transf_1. 1 hit. [Graphical view]
TIGRFAMs	TIGR02095. glgA. 1 hit.
ProtoNet	Search...

Entry information

Entry name

SSY1_WHEAT

Accession

Primary (citable) accession number: Q43654
Secondary accession number(s): Q9LEB9

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	February 16, 2004
Last modified:	January 9, 2013
This is version 65 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program