1A7A - JenaLib

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Asymmetric Unit (Jmol Viewer)

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Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Title :   STRUCTURE OF HUMAN PLACENTAL S-ADENOSYLHOMOCYSTEINE HYDROLASE: DETERMINATION OF A 30 SELENIUM ATOM SUBSTRUCTURE FROM DATA AT A SINGLE WAVELENGTH

Authors :   M. A. Turner, C. -S. Yuan, R. T. Borchardt, M. S. Hershfield, G. D. Smith, P. L. Howell

Date :   10 Mar 98 (Deposition) - 20 Apr 99 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.80

Chains :   Asym. Unit : A,B
Biol. Unit 1: A,B  (2x)

Keywords :   Hydrolase, Nad Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. A. Turner, C. S. Yuan, R. T. Borchardt, M. S. Hershfield, G. D. Smith, P. L. Howell
Structure Determination Of Selenomethionyl S-Adenosylhomocysteine Hydrolase Using Data At A Single Wavelength.
Nat. Struct. Biol. V. 5 369 1998
PubMed-ID: 9586999 | Reference-DOI: 10.1038/NSB0598-369

Molecule 1 - S-ADENOSYLHOMOCYSTEINE HYDROLASE
	Chains	:	A, B
	EC Number	:	3.3.1.1
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Cellular Location	:	CYTOPLASM
	Expression System Strain	:	B834
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Other Details	:	SELENOMETHIONINE DERIVATIZED PROTEIN
	Tissue	:	PLACENTA

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (2x)	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 34)

No.	Name	Count	Type	Full Name
1	ADC	2	Ligand/Ion	(1'R,2'S)-9-(2-HYDROXY-3'-KETO-CYCLOPENTEN-1-YL)ADENINE
2	MSE	30	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	2	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 1 (3, 68)

No.	Name	Count	Type	Full Name
1	ADC	4	Ligand/Ion	(1'R,2'S)-9-(2-HYDROXY-3'-KETO-CYCLOPENTEN-1-YL)ADENINE
2	MSE	60	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	4	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	THR A:157 , THR A:158 , THR A:159 , ASP A:190 , ASN A:191 , GLY A:220 , GLY A:222 , ASP A:223 , VAL A:224 , GLU A:243 , ILE A:244 , ASP A:245 , ASN A:248 , THR A:275 , THR A:276 , CYS A:278 , ILE A:281 , ILE A:299 , GLY A:300 , HIS A:301 , ASN A:346 , HIS A:353 , ADC A:435 , HOH A:459 , GLN B:413 , LYS B:426 , TYR B:430	BINDING SITE FOR RESIDUE NAD A 433
2	AC2	SOFTWARE	GLN A:413 , LYS A:426 , TYR A:430 , THR B:157 , THR B:158 , THR B:159 , ASN B:191 , GLY B:220 , GLY B:222 , ASP B:223 , VAL B:224 , GLU B:243 , ILE B:244 , ASP B:245 , ASN B:248 , THR B:275 , THR B:276 , CYS B:278 , ILE B:281 , ILE B:299 , GLY B:300 , HIS B:301 , ASN B:346 , HIS B:353 , ADC B:436 , HOH B:440	BINDING SITE FOR RESIDUE NAD B 434
3	AC3	SOFTWARE	LEU A:54 , HIS A:55 , THR A:57 , GLU A:59 , THR A:60 , GLU A:156 , THR A:157 , LYS A:186 , ASP A:190 , LEU A:347 , MSE A:351 , HIS A:353 , MSE A:358 , NAD A:433 , HOH A:436	BINDING SITE FOR RESIDUE ADC A 435
4	AC4	SOFTWARE	HIS B:55 , THR B:57 , GLU B:59 , THR B:60 , GLU B:156 , THR B:157 , LYS B:186 , ASP B:190 , MSE B:351 , HIS B:353 , MSE B:358 , NAD B:434 , HOH B:454	BINDING SITE FOR RESIDUE ADC B 436

(no "SS Bond" information available for 1A7A)

(no "Cis Peptide Bond" information available for 1A7A)

Asymmetric Unit (6, 12)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_052286	R	38	W	SAHH_HUMAN	Polymorphism	13043752	A/B	R	38	W
2	UniProt	VAR_058588	R	49	C	SAHH_HUMAN	Disease (HMAHCHD)	369428934	A/B	R	49	C
3	UniProt	VAR_058589	D	86	G	SAHH_HUMAN	Disease (HMAHCHD)	773162208	A/B	N	86	G
4	UniProt	VAR_006934	D	86	N	SAHH_HUMAN	Polymorphism	---	A/B	N	86	N
5	UniProt	VAR_058590	A	89	V	SAHH_HUMAN	Disease (HMAHCHD)	755222515	A/B	A	89	V
6	UniProt	VAR_058591	Y	143	C	SAHH_HUMAN	Disease (HMAHCHD)	121918608	A/B	Y	143	C

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (6, 24)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_052286	R	38	W	SAHH_HUMAN	Polymorphism	13043752	A/B	R	38	W
2	UniProt	VAR_058588	R	49	C	SAHH_HUMAN	Disease (HMAHCHD)	369428934	A/B	R	49	C
3	UniProt	VAR_058589	D	86	G	SAHH_HUMAN	Disease (HMAHCHD)	773162208	A/B	N	86	G
4	UniProt	VAR_006934	D	86	N	SAHH_HUMAN	Polymorphism	---	A/B	N	86	N
5	UniProt	VAR_058590	A	89	V	SAHH_HUMAN	Disease (HMAHCHD)	755222515	A/B	A	89	V
6	UniProt	VAR_058591	Y	143	C	SAHH_HUMAN	Disease (HMAHCHD)	121918608	A/B	Y	143	C

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	ADOHCYASE_1	PS00738	S-adenosyl-L-homocysteine hydrolase signature 1.	SAHH_HUMAN	78-92	2	A:78-92 B:78-92
2	ADOHCYASE_2	PS00739	S-adenosyl-L-homocysteine hydrolase signature 2.	SAHH_HUMAN	213-229	2	A:213-229 B:213-229

Biological Unit 1 (2, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	ADOHCYASE_1	PS00738	S-adenosyl-L-homocysteine hydrolase signature 1.	SAHH_HUMAN	78-92	4	A:78-92 B:78-92
2	ADOHCYASE_2	PS00739	S-adenosyl-L-homocysteine hydrolase signature 2.	SAHH_HUMAN	213-229	4	A:213-229 B:213-229

Asymmetric Unit (10, 20)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1a	ENST00000217426	1a	ENSE00001152081	chr20:32891154-32891049	106	SAHH_HUMAN	1-10	10	2	A:2-10 B:3-10	9 8
1.4b	ENST00000217426	4b	ENSE00000860101	chr20:32883391-32883201	191	SAHH_HUMAN	10-73	64	2	A:10-73 B:10-73	64 64
1.5	ENST00000217426	5	ENSE00000661390	chr20:32881962-32881887	76	SAHH_HUMAN	74-99	26	2	A:74-99 B:74-99	26 26
1.6	ENST00000217426	6	ENSE00000661389	chr20:32880313-32880164	150	SAHH_HUMAN	99-149	51	2	A:99-149 B:99-149	51 51
1.7b	ENST00000217426	7b	ENSE00000661388	chr20:32879337-32879225	113	SAHH_HUMAN	149-186	38	2	A:149-186 B:149-186	38 38
1.8	ENST00000217426	8	ENSE00000661387	chr20:32878744-32878537	208	SAHH_HUMAN	187-256	70	2	A:187-256 B:187-256	70 70
1.9a	ENST00000217426	9a	ENSE00000661386	chr20:32878444-32878357	88	SAHH_HUMAN	256-285	30	2	A:256-285 B:256-285	30 30
1.9c	ENST00000217426	9c	ENSE00001048932	chr20:32878255-32878138	118	SAHH_HUMAN	285-324	40	2	A:285-324 B:285-324	40 40
1.10	ENST00000217426	10	ENSE00000661384	chr20:32873440-32873246	195	SAHH_HUMAN	325-389	65	2	A:325-389 B:325-389	65 65
1.11b	ENST00000217426	11b	ENSE00001820276	chr20:32868971-32868074	898	SAHH_HUMAN	390-432	43	2	A:390-432 B:390-432	43 43

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:431
 aligned with SAHH_HUMAN | P23526 from UniProtKB/Swiss-Prot  Length:432

    Alignment length:431
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431 
           SAHH_HUMAN     2 SDKLPYKVADIGLAAWGRKALDIAENEMPGLMRMRERYSASKPLKGARIAGCLHMTVETAVLIETLVTLGAEVQWSSCNIFSTQDHAAAAIAKAGIPVYAWKGETDEEYLWCIEQTLYFKDGPLNMILDDGGDLTNLIHTKYPQLLPGIRGISEETTTGVHNLYKMMANGILKVPAINVNDSVTKSKFDNLYGCRESLIDGIKRATDVMIAGKVAVVAGYGDVGKGCAQALRGFGARVIITEIDPINALQAAMEGYEVTTMDEACQEGNIFVTTTGCIDIILGRHFEQMKDDAIVCNIGHFDVEIDVKWLNENAVEKVNIKPQVDRYRLKNGRRIILLAEGRLVNLGCAMGHPSFVMSNSFTNQVMAQIELWTHPDKYPVGVHFLPKKLDEAVAEAHLGKLNVKLTKLTEKQAQYLGMSCDGPFKPDHYRY 432
               SCOP domains d1a7aa2 A:2-189,A:353-432 S-adenosylhomocystein hydrolase                                                                                                                                   d1a7aa1 A:190-352 S-adenosylhomocystein hydrolase                                                                                                                  d1a7aa2 A:2-189,A:353-432 S-adenosylhomocystein hydrolase                        SCOP domains
               CATH domains 1a7aA01 A:2-192,A:353-404  [code=3.40.50.1480, no name defined]                                                                                                                                1a7aA02 A:193-352 NAD(P)-binding Rossmann-like Domain                                                                                                           1a7aA01 A:2-192,A:353-404                           ---------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........hhhhhhhhhhhhhhhh..hhhhhhhhhh.........eeeee....hhhhhhhhhhhh...eeeee........hhhhhhhhh...eeee.....hhhhhhhhhhhh........eeee...hhhhhhhhh.hhhh....eeee..hhhhhhhhhhh........eee....hhhh..hhhhhhhhhhhhhhhhhh.......eeeee...hhhhhhhhhhhhh..eeeee...hhhhhhhhh...eee.hhhh.....eeee.........hhhh......eeeee.........hhhhhhheeeeeeee..eeeee.....eeeeehhh..hhhhh......hhhhhhhhhhhhhhhhhhh........eee..hhhhhhhhhhh............hhhhhh................ Sec.struct. author
             SAPs(SNPs) (1) ------------------------------------W----------C------------------------------------G--V-----------------------------------------------------C------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) ------------------------------------------------------------------------------------N---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                    PROSITE ----------------------------------------------------------------------------ADOHCYASE_1    ------------------------------------------------------------------------------------------------------------------------ADOHCYASE_2      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.1a---------------------------------------------------------------Exon 1.5  PDB: A:74-99    -------------------------------------------------Exon 1.7b  PDB: A:149-186             Exon 1.8  PDB: A:187-256 UniProt: 187-256                             ----------------------------Exon 1.9c  PDB: A:285-324               Exon 1.10  PDB: A:325-389 UniProt: 325-389                       Exon 1.11b  PDB: A:390-432 UniProt: 390-432 Transcript 1 (1)
           Transcript 1 (2) --------Exon 1.4b  PDB: A:10-73 UniProt: 10-73                          -------------------------Exon 1.6  PDB: A:99-149 UniProt: 99-149            ----------------------------------------------------------------------------------------------------------Exon 1.9a  PDB: A:256-285     --------------------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (2)
                 1a7a A   2 SDKLPYKVADIGLAAWGRKALDIAENEmPGLmRmRERYSASKPLKGARIAGCLHmTVETAVLIETLVTLGAEVQWSSCNIFSTQNHAAAAIAKAGIPVYAWKGETDEEYLWCIEQTLYFKDGPLNmILDDGGDLTNLIHTKYPQLLPGIRGISEETTTGVHNLYKmmANGILKVPAINVNDSVTKSKFDNLYGCRESLIDGIKRATDVmIAGKVAVVAGYGDVGKGCAQALRGFGARVIITEIDPINALQAAmEGYEVTTmDEACQEGNIFVTTTGCIDIILGRHFEQmKDDAIVCNIGHFDVEIDVKWLNENAVEKVNIKPQVDRYRLKNGRRIILLAEGRLVNLGCAmGHPSFVmSNSFTNQVmAQIELWTHPDKYPVGVHFLPKKLDEAVAEAHLGKLNVKLTKLTEKQAQYLGmSCDGPFKPDHYRY 432
                                    11        21       |31 | |    41        51    |   61        71        81        91       101       111       121     | 131       141       151       161     ||171       181       191       201       211       221       231       241       251  |    261|      271       281       291       301       311       321       331       341       351      |361     | 371       381       391       401       411       421       431 
                                                      29-MSE |                   56-MSE                                                                127-MSE                                 167-MSE                                    210-MSE                                     254-MSE 262-MSE                     290-MSE                                                      351-MSE  |      367-MSE                                             419-MSE         
                                                          33-MSE                                                                                                                                168-MSE                                                                                                                                                                                       358-MSE                                                                      
                                                            35-MSE

Chain B from PDB  Type:PROTEIN  Length:430
 aligned with SAHH_HUMAN | P23526 from UniProtKB/Swiss-Prot  Length:432

    Alignment length:430
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382       392       402       412       422       432
           SAHH_HUMAN     3 DKLPYKVADIGLAAWGRKALDIAENEMPGLMRMRERYSASKPLKGARIAGCLHMTVETAVLIETLVTLGAEVQWSSCNIFSTQDHAAAAIAKAGIPVYAWKGETDEEYLWCIEQTLYFKDGPLNMILDDGGDLTNLIHTKYPQLLPGIRGISEETTTGVHNLYKMMANGILKVPAINVNDSVTKSKFDNLYGCRESLIDGIKRATDVMIAGKVAVVAGYGDVGKGCAQALRGFGARVIITEIDPINALQAAMEGYEVTTMDEACQEGNIFVTTTGCIDIILGRHFEQMKDDAIVCNIGHFDVEIDVKWLNENAVEKVNIKPQVDRYRLKNGRRIILLAEGRLVNLGCAMGHPSFVMSNSFTNQVMAQIELWTHPDKYPVGVHFLPKKLDEAVAEAHLGKLNVKLTKLTEKQAQYLGMSCDGPFKPDHYRY 432
               SCOP domains d1a7ab2 B:3-189,B:353-432 S-adenosylhomocystein hydrolase                                                                                                                                  d1a7ab1 B:190-352 S-adenosylhomocystein hydrolase                                                                                                                  d1a7ab2 B:3-189,B:353-432 S-adenosylhomocystein hydrolase                        SCOP domains
               CATH domains 1a7aB01 B:3-192,B:353-404  [code=3.40.50.1480, no name defined]                                                                                                                               1a7aB02 B:193-352 NAD(P)-binding Rossmann-like Domain                                                                                                           1a7aB01 B:3-192,B:353-404                           ---------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhhhhhhhhhhhh..hhhhhhhhhh.........eeeee....hhhhhhhhhhhh...eeeee........hhhhhhhhh...eeee.....hhhhhhhhhhhh........eeee...hhhhhhhhh.hhhh....eeee..hhhhhhhhhhh........eee....hhhh..hhhhhhhhhhhhhhhhhh.......eeeee...hhhhhhhhhhhhh..eeeee...hhhhhhhhh...eee.hhhh.....eeee.........hhhh......eeeee.........hhhhhhheeeeeeee..eeeee.....eeeeehhh..hhhhh......hhhhhhhhhhhhhhhhhhh........eee..hhhhhhhhhhh............hhhhhh................ Sec.struct. author
             SAPs(SNPs) (1) -----------------------------------W----------C------------------------------------G--V-----------------------------------------------------C------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) -----------------------------------------------------------------------------------N---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                    PROSITE ---------------------------------------------------------------------------ADOHCYASE_1    ------------------------------------------------------------------------------------------------------------------------ADOHCYASE_2      ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) 1.1a    ---------------------------------------------------------------Exon 1.5  PDB: B:74-99    -------------------------------------------------Exon 1.7b  PDB: B:149-186             Exon 1.8  PDB: B:187-256 UniProt: 187-256                             ----------------------------Exon 1.9c  PDB: B:285-324               Exon 1.10  PDB: B:325-389 UniProt: 325-389                       Exon 1.11b  PDB: B:390-432 UniProt: 390-432 Transcript 1 (1)
           Transcript 1 (2) -------Exon 1.4b  PDB: B:10-73 UniProt: 10-73                          -------------------------Exon 1.6  PDB: B:99-149 UniProt: 99-149            ----------------------------------------------------------------------------------------------------------Exon 1.9a  PDB: B:256-285     --------------------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (2)
                 1a7a B   3 DKLPYKVADIGLAAWGRKALDIAENEmPGLmRmRERYSASKPLKGARIAGCLHmTVETAVLIETLVTLGAEVQWSSCNIFSTQNHAAAAIAKAGIPVYAWKGETDEEYLWCIEQTLYFKDGPLNmILDDGGDLTNLIHTKYPQLLPGIRGISEETTTGVHNLYKmmANGILKVPAINVNDSVTKSKFDNLYGCRESLIDGIKRATDVmIAGKVAVVAGYGDVGKGCAQALRGFGARVIITEIDPINALQAAmEGYEVTTmDEACQEGNIFVTTTGCIDIILGRHFEQmKDDAIVCNIGHFDVEIDVKWLNENAVEKVNIKPQVDRYRLKNGRRIILLAEGRLVNLGCAmGHPSFVmSNSFTNQVmAQIELWTHPDKYPVGVHFLPKKLDEAVAEAHLGKLNVKLTKLTEKQAQYLGmSCDGPFKPDHYRY 432
                                    12        22      | 32| |     42        52   |    62        72        82        92       102       112       122    |  132       142       152       162    || 172       182       192       202       212       222       232       242       252 |     262       272       282       292       302       312       322       332       342       352     | 362    |  372       382       392       402       412      |422       432
                                                     29-MSE |                   56-MSE                                                                127-MSE                                 167-MSE                                    210-MSE                                     254-MSE 262-MSE                     290-MSE                                                      351-MSE  |      367-MSE                                             419-MSE         
                                                         33-MSE                                                                                                                                168-MSE                                                                                                                                                                                       358-MSE                                                                      
                                                           35-MSE

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Rossmann fold (7312)

Homologous Superfamily: [code=3.40.50.1480, no name defined] (11)

Human (Homo sapiens) (2)

1a	1a7aA01	A:2-192,A:353-404
1b	1a7aB01	B:3-192,B:353-404

Homologous Superfamily: NAD(P)-binding Rossmann-like Domain (1244)

Human (Homo sapiens) (188)

2a	1a7aA02	A:193-352
2b	1a7aB02	B:193-352

(no "Pfam Domain" information available for 1A7A)

Asymmetric Unit(hide GO term definitions)

Chain A,B (SAHH_HUMAN | P23526)

molecular function
	GO:0051287	NAD binding	Interacting selectively and non-covalently with nicotinamide adenine dinucleotide, a coenzyme involved in many redox and biosynthetic reactions; binding may be to either the oxidized form, NAD+, or the reduced form, NADH.
	GO:0004013	adenosylhomocysteinase activity	Catalysis of the reaction: S-adenosyl-L-homocysteine + H2O = adenosine + L-homocysteine.
	GO:0030554	adenyl nucleotide binding	Interacting selectively and non-covalently with adenyl nucleotides, any compound consisting of adenosine esterified with (ortho)phosphate.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0042802	identical protein binding	Interacting selectively and non-covalently with an identical protein or proteins.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
	GO:0019510	S-adenosylhomocysteine catabolic process	The chemical reactions and pathways resulting in the breakdown of S-adenosylhomocysteine, forming homocysteine and then methionine.
	GO:0033353	S-adenosylmethionine cycle	A cyclic series of interconversions involving S-adenosylmethionine, S-adenosyl-L-homocysteine, L-cysteine, and L-methionine. Couples utilization of the methyl group of SAM with recycling of the homocysteinyl group and regeneration of methionine.
	GO:0002439	chronic inflammatory response to antigenic stimulus	A chronic inflammatory response to an antigenic stimulus. A chronic inflammatory response persists indefinitely during days, weeks, or months in the life of an individual.
	GO:0042745	circadian sleep/wake cycle	The cycle from wakefulness through an orderly succession of sleep states and stages that occurs on an approximately 24 hour rhythm.
	GO:0071268	homocysteine biosynthetic process	The chemical reactions and pathways resulting in the formation of homocysteine, 2-amino-4-sulfanylbutanoic acid.
	GO:0032259	methylation	The process in which a methyl group is covalently attached to a molecule.
	GO:0006730	one-carbon metabolic process	The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
	GO:0001666	response to hypoxia	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
	GO:0007584	response to nutrient	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nutrient stimulus.
	GO:0000096	sulfur amino acid metabolic process	The chemical reactions and pathways involving amino acids containing sulfur, comprising cysteine, homocysteine, methionine and selenocysteine.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0070062	extracellular exosome	A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
	GO:0042470	melanosome	A tissue-specific, membrane-bounded cytoplasmic organelle within which melanin pigments are synthesized and stored. Melanosomes are synthesized in melanocyte cells.
	GO:0043005	neuron projection	A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

Asymmetric Unit
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	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1a7a)

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	1a7a
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	SAHH_HUMAN \| P23526
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	3.3.1.1
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	613752
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	SAHH_HUMAN \| P23526
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	SAHH_HUMAN \| P23526	:	1li4 3nj4 4pfj 4pgf 4yvf 5w49 5w4b

(no "Related Entries Specified in the PDB File" available for 1A7A)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 34)

Sites (4, 4)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (6, 12)

PROSITE Motifs (2, 4)

Exons (10, 20)

Sequences/Alignments

Classification and Annotation

SCOP Domains (2, 4)

CATH Domains (2, 4)

Pfam Domains (0, 0)

Gene Ontology (22, 22)

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Databases

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File