ID A0A0L0FCZ8_9EUKA Unreviewed; 458 AA.
AC A0A0L0FCZ8;
DT 11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT 11-NOV-2015, sequence version 1.
DT 27-MAR-2024, entry version 34.
DE RecName: Full=Cystathionine beta-synthase {ECO:0000256|ARBA:ARBA00026192, ECO:0000256|RuleBase:RU361204};
DE EC=4.2.1.22 {ECO:0000256|ARBA:ARBA00012041, ECO:0000256|RuleBase:RU361204};
GN ORFNames=SARC_12820 {ECO:0000313|EMBL:KNC74639.1};
OS Sphaeroforma arctica JP610.
OC Eukaryota; Ichthyosporea; Ichthyophonida; Sphaeroforma.
OX NCBI_TaxID=667725 {ECO:0000313|EMBL:KNC74639.1, ECO:0000313|Proteomes:UP000054560};
RN [1] {ECO:0000313|EMBL:KNC74639.1, ECO:0000313|Proteomes:UP000054560}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JP610 {ECO:0000313|EMBL:KNC74639.1,
RC ECO:0000313|Proteomes:UP000054560};
RG The Broad Institute Genome Sequencing Platform;
RA Russ C., Cuomo C., Young S.K., Zeng Q., Gargeya S., Alvarado L., Berlin A.,
RA Chapman S.B., Chen Z., Freedman E., Gellesch M., Goldberg J., Griggs A.,
RA Gujja S., Heilman E., Heiman D., Howarth C., Mehta T., Neiman D.,
RA Pearson M., Roberts A., Saif S., Shea T., Shenoy N., Sisk P., Stolte C.,
RA Sykes S., White J., Yandava C., Burger G., Gray M.W., Holland P.W.H.,
RA King N., Lang F.B.F., Roger A.J., Ruiz-Trillo I., Haas B., Nusbaum C.,
RA Birren B.;
RT "The Genome Sequence of Sphaeroforma arctica JP610.";
RL Submitted (FEB-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-homocysteine + L-serine = H2O + L,L-cystathionine;
CC Xref=Rhea:RHEA:10112, ChEBI:CHEBI:15377, ChEBI:CHEBI:33384,
CC ChEBI:CHEBI:58161, ChEBI:CHEBI:58199; EC=4.2.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00001175,
CC ECO:0000256|RuleBase:RU361204};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|RuleBase:RU361204};
CC -!- PATHWAY: Amino-acid biosynthesis; L-cysteine biosynthesis; L-cysteine
CC from L-homocysteine and L-serine: step 1/2.
CC {ECO:0000256|ARBA:ARBA00005003}.
CC -!- SIMILARITY: Belongs to the cysteine synthase/cystathionine beta-
CC synthase family. {ECO:0000256|RuleBase:RU361204}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; KQ244217; KNC74639.1; -; Genomic_DNA.
DR RefSeq; XP_014148541.1; XM_014293066.1.
DR AlphaFoldDB; A0A0L0FCZ8; -.
DR STRING; 667725.A0A0L0FCZ8; -.
DR EnsemblProtists; KNC74639; KNC74639; SARC_12820.
DR GeneID; 25913324; -.
DR eggNOG; KOG1252; Eukaryota.
DR OrthoDB; 5487987at2759; -.
DR UniPathway; UPA00136; UER00201.
DR Proteomes; UP000054560; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:InterPro.
DR GO; GO:0004122; F:cystathionine beta-synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006535; P:cysteine biosynthetic process from serine; IEA:UniProtKB-UniRule.
DR GO; GO:0019343; P:cysteine biosynthetic process via cystathionine; IEA:UniProtKB-UniRule.
DR CDD; cd01561; CBS_like; 1.
DR Gene3D; 3.40.50.1100; -; 2.
DR Gene3D; 3.10.580.10; CBS-domain; 1.
DR InterPro; IPR000644; CBS_dom.
DR InterPro; IPR046342; CBS_dom_sf.
DR InterPro; IPR005857; Cysta_beta_synth.
DR InterPro; IPR001216; P-phosphate_BS.
DR InterPro; IPR001926; TrpB-like_PALP.
DR InterPro; IPR036052; TrpB-like_PALP_sf.
DR NCBIfam; TIGR01137; cysta_beta; 1.
DR PANTHER; PTHR10314; CYSTATHIONINE BETA-SYNTHASE; 1.
DR PANTHER; PTHR10314:SF194; CYSTATHIONINE BETA-SYNTHASE; 1.
DR Pfam; PF00571; CBS; 1.
DR Pfam; PF00291; PALP; 1.
DR SMART; SM00116; CBS; 2.
DR SUPFAM; SSF54631; CBS-domain pair; 1.
DR SUPFAM; SSF53686; Tryptophan synthase beta subunit-like PLP-dependent enzymes; 1.
DR PROSITE; PS51371; CBS; 1.
DR PROSITE; PS00901; CYS_SYNTHASE; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|RuleBase:RU361204};
KW CBS domain {ECO:0000256|ARBA:ARBA00023122, ECO:0000256|PROSITE-
KW ProRule:PRU00703};
KW Cysteine biosynthesis {ECO:0000256|ARBA:ARBA00023192,
KW ECO:0000256|RuleBase:RU361204};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|RuleBase:RU361204};
KW Pyridoxal phosphate {ECO:0000256|RuleBase:RU361204};
KW Reference proteome {ECO:0000313|Proteomes:UP000054560}.
FT DOMAIN 336..393
FT /note="CBS"
FT /evidence="ECO:0000259|PROSITE:PS51371"
SQ SEQUENCE 458 AA; 50003 MW; 7837ED2F76AE0E74 CRC64;
MRTVTDQYLQ INTINKAEGL ECDLLAKCEF FNAAGSVKDR IAKRMFDEAE KSGKIKPGDT
IIEPTSGNTG LGLALCAAVK GYRCIICLPE KMSNEKVDTL RALGAEIVRT PNDASFDSPE
SHIGVSMRLN REIPNSHILN QYDNEYNPLA HYDTTAEEIL EACGGKVDML VAGAGTGGTI
TGIARRLKEV CPDVIIVGVD PVGSILAQPA SLNVDGPMYQ VEGIGYDFIP NSLDRSLVDK
WYKCTDKPSL IMARRMIKEE GLLCGGSSGA AMACAIEAAK ELKAGQKCVV MLPDGLRNYM
SKFLNDEWMY ENGIMERAAK ESEVDRFNGA TVKDLDLPVP VTAALTSTCG EAVEVLNKHG
FDYLPLTDVD GKIRGLVTEG QLLAALTHGR CTVSDHVEKC MLHFNTKKKF EVIKPDTPLK
SLEMFFEHHH IGFTTDDSGN LAGVMTKIDV LKFLVKQN
//
