Contacts of the strand formed by residues 21 - 27 (chain A) in PDB entry 3U8Z
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with THR 21 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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20A LYS* 1.4 89.6 + - + +
22A PHE* 1.3 59.4 + - - +
36A ASN* 4.0 31.8 + - + +
37A CYS 3.2 9.4 - - - +
38A GLU* 3.9 25.8 - - + +
39A MET* 3.4 15.2 - - - +
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Residues in contact with PHE 22 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21A THR* 1.3 73.5 - - - +
23A THR* 1.3 71.5 + - - +
24A VAL* 3.6 19.1 - - + -
35A PHE 3.6 0.2 - - - +
36A ASN* 3.7 4.7 - - - -
37A CYS* 2.8 51.8 + - - +
38A GLU 3.6 19.1 - - - -
39A MET* 3.7 29.4 - - + -
81A VAL* 3.2 35.0 - - + -
82A LEU* 4.3 16.8 - - + -
92A VAL* 4.5 16.2 - - + -
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Residues in contact with THR 23 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22A PHE* 1.3 78.8 - - - +
24A VAL* 1.3 67.8 + - - +
25A ARG 4.3 0.7 - - - +
34A GLU* 3.8 37.0 - - + +
35A PHE 3.4 8.7 - - - +
36A ASN* 3.9 12.5 + - - +
91A PRO* 5.3 3.5 - - + +
92A VAL* 4.3 14.2 + - - +
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Residues in contact with VAL 24 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22A PHE* 3.6 31.9 - - + -
23A THR* 1.3 76.1 - - - +
25A ARG* 1.3 62.7 + - - +
26A ILE* 3.7 17.0 + - + -
34A GLU* 3.3 4.2 - - - -
35A PHE* 2.9 35.4 + - - +
37A CYS* 3.6 17.9 - - + -
46A LEU* 3.9 16.6 - - + -
81A VAL* 4.7 1.6 - - + -
92A VAL* 3.5 14.8 - - + +
94A PHE* 3.7 28.9 - - + -
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Residues in contact with ARG 25 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23A THR* 4.3 1.6 - - + +
24A VAL* 1.3 69.3 - - - +
26A ILE* 1.3 62.9 + - - +
27A VAL* 4.1 6.3 - - + -
32A GLU* 3.8 36.9 + - + +
33A MET 3.3 13.5 - - - +
34A GLU* 3.7 24.6 + - + +
91A PRO* 4.0 31.3 - - + +
92A VAL 2.8 9.8 + - - +
93A THR* 3.3 31.9 + - + +
94A PHE 3.0 26.0 + - - -
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Residues in contact with ILE 26 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24A VAL* 3.7 26.9 + - + -
25A ARG* 1.3 73.1 - - - +
27A VAL* 1.3 61.8 + - - +
28A THR* 3.8 6.8 + - + -
31A ALA 3.8 1.2 - - - +
33A MET* 2.7 42.5 + - + +
35A PHE* 3.6 31.2 - - + -
46A LEU* 4.3 8.3 - - + -
50A VAL* 3.9 25.4 - - + -
64A LEU* 3.7 22.7 - - + -
94A PHE* 3.4 13.7 - - + +
96A PHE* 3.8 26.0 - - + -
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Residues in contact with VAL 27 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25A ARG* 4.4 11.9 - - + -
26A ILE* 1.3 74.6 - - - +
28A THR* 1.4 69.4 + - - +
31A ALA 3.6 8.3 - - - +
32A GLU* 4.5 12.8 - - + -
93A THR* 4.2 22.9 - - + -
94A PHE 2.9 11.0 + - - +
95A HIS* 3.3 33.6 - - + +
96A PHE 2.7 30.8 + - - +
97A LEU* 5.7 0.5 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il