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Protein

Adenosylhomocysteinase

Gene

SAHH

Organism
Catharanthus roseus (Madagascar periwinkle) (Vinca rosea)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Adenosylhomocysteine is a competitive inhibitor of S-adenosyl-L-methionine-dependent methyl transferase reactions; therefore adenosylhomocysteinase may play a key role in the control of methylations via regulation of the intracellular concentration of adenosylhomocysteine.

Catalytic activityi

S-adenosyl-L-homocysteine + H2O = L-homocysteine + adenosine.

Cofactori

NAD+Note: Binds 1 NAD+ per subunit.

Pathwayi: L-homocysteine biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes L-homocysteine from S-adenosyl-L-homocysteine.
Proteins known to be involved in this subpathway in this organism are:
  1. Adenosylhomocysteinase (SAHH)
This subpathway is part of the pathway L-homocysteine biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-homocysteine from S-adenosyl-L-homocysteine, the pathway L-homocysteine biosynthesis and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei64SubstrateBy similarity1
Binding sitei139SubstrateBy similarity1
Binding sitei205SubstrateBy similarity1
Binding sitei235SubstrateBy similarity1
Binding sitei239SubstrateBy similarity1
Binding sitei240NADBy similarity1
Binding sitei292NADBy similarity1
Binding sitei327NADBy similarity1
Binding sitei397NADBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi206 – 208NADBy similarity3
Nucleotide bindingi269 – 274NADBy similarity6
Nucleotide bindingi348 – 350NADBy similarity3

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionHydrolase
Biological processOne-carbon metabolism, Stress response
LigandNAD

Enzyme and pathway databases

UniPathwayiUPA00314; UER00076.

Names & Taxonomyi

Protein namesi
Recommended name:
Adenosylhomocysteinase (EC:3.3.1.1)
Short name:
AdoHcyase
Alternative name(s):
S-adenosyl-L-homocysteine hydrolase
Gene namesi
Name:SAHH
OrganismiCatharanthus roseus (Madagascar periwinkle) (Vinca rosea)
Taxonomic identifieri4058 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsGentianalesApocynaceaeRauvolfioideaeVinceaeCatharanthinaeCatharanthus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001169221 – 485AdenosylhomocysteinaseAdd BLAST485

Proteomic databases

PRIDEiP35007.

Expressioni

Inductioni

By stress.

Interactioni

Subunit structurei

Homotetramer.By similarity

Structurei

3D structure databases

ProteinModelPortaliP35007.
SMRiP35007.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the adenosylhomocysteinase family.Curated

Family and domain databases

CDDicd00401. SAHH. 1 hit.
HAMAPiMF_00563. AdoHcyase. 1 hit.
InterProiView protein in InterPro
IPR034373. Adenosylhomocysteinase.
IPR000043. Adenosylhomocysteinase-like.
IPR015878. Ado_hCys_hydrolase_NAD-bd.
IPR036291. NAD(P)-bd_dom_sf.
IPR020082. S-Ado-L-homoCys_hydrolase_CS.
PANTHERiPTHR23420. PTHR23420. 1 hit.
PfamiView protein in Pfam
PF05221. AdoHcyase. 1 hit.
PF00670. AdoHcyase_NAD. 1 hit.
PIRSFiPIRSF001109. Ad_hcy_hydrolase. 1 hit.
SMARTiView protein in SMART
SM00996. AdoHcyase. 1 hit.
SM00997. AdoHcyase_NAD. 1 hit.
SUPFAMiSSF51735. SSF51735. 1 hit.
TIGRFAMsiTIGR00936. ahcY. 1 hit.
PROSITEiView protein in PROSITE
PS00738. ADOHCYASE_1. 1 hit.
PS00739. ADOHCYASE_2. 1 hit.

Sequencei

Sequence statusi: Complete.

P35007-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MALLVEKTSS GREYKVKDMS QADFGRLEIE LAEVEMPGLM SCRAEFGPSQ
60 70 80 90 100
PFKGAKITGS LHMTIQTAVL IETLTALGAE VRWCSCNIFS TQEHAAAAIA
110 120 130 140 150
RDSAAVFAWK GETLQEYWWC TERALDWGPD GGPDLIVDDG GDATLLIHEG
160 170 180 190 200
VKAEEEYKKN GALPDPSSTD NAEFQIVLTI IRDGLKSDPT KYTRMKERLV
210 220 230 240 250
GVSEETTTGV KRLYQMQANG TLLFPAINVN DSVTKSKFDN LYGCRHSLPD
260 270 280 290 300
GLMRATDVMI AGKVAVVAGY GDVGKGCAAA LKQAGARVIV TEIDPICALQ
310 320 330 340 350
ATMEGLQVLT LEDVVSEADI FVTTTGNKDI IMVDHMRKMK NNAIVCNIGH
360 370 380 390 400
FDNEIDMLGL ETYPGVKRIT IKPQTDRWVF PDTNSGIIVL AEGRLMNLGC
410 420 430 440 450
ATGHPSFVMS CSFTNQVIAQ LELWNERKTG KYEKKVYVLP KHLDEKVAAL
460 470 480
HLGKLGAKLT KLTKDQADYI SVPIEGPYKP AHYRY
Length:485
Mass (Da):53,233
Last modified:February 1, 1994 - v1
Checksum:i50CC0E99A9F66C51
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z26881 mRNA. Translation: CAA81527.1.
PIRiS38379.

Similar proteinsi

Entry informationi

Entry nameiSAHH_CATRO
AccessioniPrimary (citable) accession number: P35007
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1994
Last sequence update: February 1, 1994
Last modified: October 25, 2017
This is version 95 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families