Contacts of the strand formed by residues 24 - 28 (chain I) in PDB entry 5GAG
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 SER 24 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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22I ALA* 4.6 0.6 - - - +
23I LEU* 1.3 80.3 - - - +
25I ALA* 1.3 60.6 + - - +
26I VAL* 4.3 1.8 - - - -
83I ALA 3.6 0.5 - - - +
84I TYR* 3.6 3.9 - - - -
85I VAL* 2.9 51.6 + - - +
89I PRO* 3.6 3.9 - - - +
90I GLY* 3.2 22.9 + - - -
92I ALA* 4.9 1.6 - - - +
112I ALA 4.0 3.4 - - - -
113I PHE* 4.3 6.1 - - - -
126I LEU* 4.1 24.2 - - - -
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Residues in contact with ALA 25 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24I SER* 1.3 75.1 - - - +
26I VAL* 1.3 64.2 + - - +
27I VAL* 4.1 1.4 + - + -
69I PHE* 3.6 21.0 - - + -
72I LEU* 4.4 6.5 - - + +
82I ILE* 6.3 2.5 - - + -
83I ALA 3.4 5.4 - - - +
84I TYR* 3.4 33.0 - - + -
111I ALA* 4.0 0.2 - - - +
112I ALA* 2.9 37.5 + - + +
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Residues in contact with VAL 26 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24I SER* 5.4 0.7 - - - +
25I ALA* 1.3 77.7 - - - +
27I VAL* 1.3 66.7 + - - +
81I LEU 3.7 1.2 - - - +
82I ILE* 3.5 3.8 - - - +
83I ALA 2.9 34.1 + - - +
92I ALA* 4.0 17.3 - - + -
93I ALA* 4.0 26.5 - - + +
96I PHE* 4.1 14.9 - - + -
108I VAL* 3.7 29.6 - - + -
111I ALA* 3.6 23.6 - - + -
123I ILE* 4.3 4.9 - - + -
126I LEU* 4.7 8.3 - - + -
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Residues in contact with VAL 27 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25I ALA* 4.1 1.5 + - + -
26I VAL* 1.3 79.0 - - - +
28I ALA* 1.3 64.4 + - - +
72I LEU* 3.5 28.0 - - + -
75I ALA* 3.7 26.2 - - + +
76I PHE* 4.0 10.3 - - + -
80I THR* 3.7 22.4 - - + -
81I LEU 3.5 2.5 - - - -
82I ILE* 3.5 25.6 - - + -
108I VAL 4.1 0.2 - - - -
109I LYS* 3.6 21.9 + - - +
110I ALA 3.7 23.1 + - - +
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Residues in contact with ALA 28 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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26I VAL 4.2 0.2 + - - -
27I VAL* 1.3 73.6 - - - +
29I ASP* 1.3 67.2 + - - +
79I PRO 3.2 6.6 - - - +
80I THR* 3.5 1.6 - - - -
81I LEU* 2.9 35.2 + - + +
96I PHE* 3.5 29.4 - - + -
106I PHE* 5.1 1.3 - - + -
108I VAL* 3.5 26.9 - - + +
109I LYS* 3.8 9.8 - - - +
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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