Contacts of the strand formed by residues 19 - 22 (chain H) in PDB entry 1YI5
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 VAL 19 (chain H).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1H ILE* 4.9 0.7 - - - -
3H CYS* 4.1 2.2 - - - -
17H GLY 3.0 1.8 + - - -
18H HIS* 1.3 82.0 - - + +
20H CYS* 1.3 62.8 + - - +
21H TYR* 4.1 4.2 + - + -
41H CYS* 3.2 7.8 - - - +
42H ALA* 3.1 42.8 + - + +
44H THR* 3.4 30.7 - - - +
45H CYS* 3.9 10.5 - - + +
56H CYS* 3.7 28.5 - - + -
57H CYS 3.8 9.6 - - - +
58H SER* 5.2 2.7 - - - +
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Residues in contact with CYS 20 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1H ILE* 4.1 15.0 - - - -
2H ARG 4.1 2.7 - - - -
3H CYS* 2.0 49.4 - - + -
19H VAL* 1.3 73.1 - - - +
21H TYR* 1.3 57.8 + - - +
40H GLY 3.5 3.6 - - - -
55H GLN 3.7 1.0 - - - +
56H CYS* 3.4 4.7 - - - -
57H CYS* 3.1 28.9 + - - -
59H THR 4.3 1.8 - - - -
61H ASN 4.8 0.7 - - - -
62H CYS* 3.8 26.2 - - - -
63H ASN* 3.3 22.4 - - - +
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Residues in contact with TYR 21 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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19H VAL* 4.6 2.7 - - + -
20H CYS* 1.3 74.0 - - - +
22H THR* 1.3 65.3 + - - +
23H LYS* 3.3 49.2 + - + -
38H ASP* 4.2 8.3 + - - -
39H LEU* 3.7 5.6 - - - -
40H GLY* 3.0 42.3 + - - +
41H CYS 3.5 28.0 + - - -
42H ALA* 3.5 22.8 - - + +
46H PRO* 4.3 34.5 - - + -
54H ILE* 4.9 3.1 - - + -
55H GLN 3.5 5.2 - - - +
56H CYS* 4.4 7.4 - - - -
63H ASN* 3.9 4.9 + - - -
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Residues in contact with THR 22 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21H TYR* 1.3 76.7 + - - +
23H LYS* 1.3 63.7 + - - +
24H THR* 3.7 19.8 + - + -
37H VAL* 5.1 1.8 - - + -
39H LEU* 3.5 19.5 - - + +
53H ASP 3.5 6.1 - - - +
54H ILE* 3.5 3.1 - - - -
55H GLN* 3.0 48.4 + - + +
63H ASN* 3.3 28.6 + - - +
64H PRO 5.3 3.4 - - - +
66H PRO* 5.8 7.0 - - + -
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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
------------------------------------------------------------
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